feat(cpp-object-oriented-modular-refactoring): step 6 - io-application-google-style

include/fesa/app/fesa_application.h

@@ -0,0 +1,21 @@
+#ifndef FESA_APP_FESA_APPLICATION_H_
+#define FESA_APP_FESA_APPLICATION_H_
+
+#include <string>
+#include <vector>
+
+namespace fesa {
+
+/// @brief Owns the argv-independent CLI contract and stable process exit codes.
+class FesaApplication {
+ public:
+  /// @brief Runs one solver invocation from operands and options after argv[0].
+  /// @param arguments Input path and optional `--output` pair.
+  /// @return The stable CLI exit code for usage, input, model, solver, or
+  /// output status.
+  int Run(const std::vector<std::string>& arguments);
+};
+
+}  // namespace fesa
+
+#endif  // FESA_APP_FESA_APPLICATION_H_

include/fesa/app/fesa_application.hpp

@@ -1,14 +0,0 @@
-#pragma once
-
-#include <string>
-#include <vector>
-
-namespace fesa {
-
-// Owns the argv-independent command-line contract and stable process codes.
-class FesaApplication {
-public:
-    int run(const std::vector<std::string>& arguments);
-};
-
-} // namespace fesa

include/fesa/io/abaqus/domain_mapper.h

@@ -0,0 +1,24 @@
+#ifndef FESA_IO_ABAQUS_DOMAIN_MAPPER_H_
+#define FESA_IO_ABAQUS_DOMAIN_MAPPER_H_
+
+#include "fesa/core/status.h"
+#include "fesa/io/abaqus/input_syntax.h"
+#include "fesa/model/domain.h"
+
+namespace fesa {
+
+/// @brief Maps syntax-only blocks into an approved immutable semantic model.
+/// @note Source identity and declaration order are preserved through mapping.
+class AbaqusDomainMapper {
+ public:
+  /// @brief Resolves supported Abaqus syntax into a complete Domain candidate.
+  /// @param input Parsed syntax whose source locations remain valid for
+  /// mapping.
+  /// @return A committed Domain or structured input/model diagnostics; partial
+  /// domains are never returned.
+  Result<Domain> Map(const ParsedInput& input) const;
+};
+
+}  // namespace fesa
+
+#endif  // FESA_IO_ABAQUS_DOMAIN_MAPPER_H_

include/fesa/io/abaqus/domain_mapper.hpp

@@ -1,15 +0,0 @@
-#pragma once
-
-#include "fesa/core/status.h"
-#include "fesa/io/abaqus/input_syntax.hpp"
-#include "fesa/model/domain.h"
-
-namespace fesa {
-
-// Converts syntax-only blocks into the approved immutable B33 semantic model.
-class AbaqusDomainMapper {
-public:
-    Result<Domain> map(const ParsedInput& input) const;
-};
-
-} // namespace fesa

include/fesa/io/abaqus/input_reader.h

@@ -0,0 +1,24 @@
+#ifndef FESA_IO_ABAQUS_INPUT_READER_H_
+#define FESA_IO_ABAQUS_INPUT_READER_H_
+
+#include <filesystem>
+
+#include "fesa/core/status.h"
+#include "fesa/io/abaqus/input_syntax.h"
+
+namespace fesa {
+
+/// @brief Reads Abaqus physical keyword, data, and comment syntax.
+/// @note Semantic policy is applied later by AbaqusDomainMapper.
+class AbaqusInputReader {
+ public:
+  /// @brief Parses one input file without applying semantic mapping policy.
+  /// @param input_path Path to the exact source bytes whose identity is
+  /// retained.
+  /// @return Parsed syntax or a structured input diagnostic.
+  Result<ParsedInput> Read(const std::filesystem::path& input_path) const;
+};
+
+}  // namespace fesa
+
+#endif  // FESA_IO_ABAQUS_INPUT_READER_H_

include/fesa/io/abaqus/input_reader.hpp

@@ -1,17 +0,0 @@
-#pragma once
-
-#include "fesa/core/status.h"
-#include "fesa/io/abaqus/input_syntax.hpp"
-
-#include <filesystem>
-
-namespace fesa {
-
-// Reads only physical keyword/data/comment syntax; semantic policy is applied
-// later by AbaqusDomainMapper.
-class AbaqusInputReader {
-public:
-    Result<ParsedInput> read(const std::filesystem::path& inputPath) const;
-};
-
-} // namespace fesa

include/fesa/io/abaqus/input_syntax.h

@@ -0,0 +1,46 @@
+#ifndef FESA_IO_ABAQUS_INPUT_SYNTAX_H_
+#define FESA_IO_ABAQUS_INPUT_SYNTAX_H_
+
+#include <filesystem>
+#include <optional>
+#include <string>
+#include <vector>
+
+#include "fesa/core/source_identity.h"
+
+namespace fesa {
+
+/// @brief Stores a canonical parameter name and its optional source value.
+/// @note Parameter names are canonicalized for lookup while values remain
+/// source text.
+struct KeywordParameter {
+  std::string name;
+  std::optional<std::string> value;
+};
+
+/// @brief Stores one parsed data row with its source location.
+struct DataLine {
+  std::vector<std::string> fields;
+  SourceLocation location;
+};
+
+/// @brief Stores one syntax-only keyword block and its following data rows.
+struct KeywordBlock {
+  std::string canonical_name;
+  std::string original_line;
+  std::vector<KeywordParameter> parameters;
+  std::vector<DataLine> data;
+  SourceLocation location;
+};
+
+/// @brief Stores the parsed syntax and stable identity of one Abaqus input
+/// file.
+struct ParsedInput {
+  std::filesystem::path source_path;
+  std::string source_content_identity;
+  std::vector<KeywordBlock> blocks;
+};
+
+}  // namespace fesa
+
+#endif  // FESA_IO_ABAQUS_INPUT_SYNTAX_H_

include/fesa/io/abaqus/input_syntax.hpp

@@ -1,37 +0,0 @@
-#pragma once
-
-#include "fesa/core/source_identity.h"
-
-#include <filesystem>
-#include <optional>
-#include <string>
-#include <vector>
-
-namespace fesa {
-
-// Names are canonicalized for syntax lookup while values remain source text.
-struct KeywordParameter {
-    std::string name;
-    std::optional<std::string> value;
-};
-
-struct DataLine {
-    std::vector<std::string> fields;
-    SourceLocation location;
-};
-
-struct KeywordBlock {
-    std::string canonicalName;
-    std::string originalLine;
-    std::vector<KeywordParameter> parameters;
-    std::vector<DataLine> data;
-    SourceLocation location;
-};
-
-struct ParsedInput {
-    std::filesystem::path sourcePath;
-    std::string sourceContentIdentity;
-    std::vector<KeywordBlock> blocks;
-};
-
-} // namespace fesa

include/fesa/io/hdf5/hdf5_results_writer.h

@@ -0,0 +1,28 @@
+#ifndef FESA_IO_HDF5_HDF5_RESULTS_WRITER_H_
+#define FESA_IO_HDF5_HDF5_RESULTS_WRITER_H_
+
+#include "fesa/results/results_writer.h"
+
+namespace fesa {
+
+/// @brief Writes authoritative schema-v0 HDF5 results atomically.
+/// @note HDF5 and platform types remain private to the implementation.
+class Hdf5ResultsWriter final : public ResultsWriter {
+ public:
+  /// @brief Writes and self-checks a complete candidate before finalization.
+  /// @param output_path Final authoritative path; the candidate is created in
+  /// the same directory.
+  /// @param domain Immutable source and model identity.
+  /// @param state Fully recovered analysis state.
+  /// @param diagnostics Deterministically ordered run diagnostics.
+  /// @return Success only after atomic replacement or a structured output
+  /// failure.
+  /// @note A failed candidate does not replace an existing valid final file.
+  Status Write(const std::filesystem::path& output_path, const Domain& domain,
+               const AnalysisState& state,
+               const std::vector<Diagnostic>& diagnostics) override;
+};
+
+}  // namespace fesa
+
+#endif  // FESA_IO_HDF5_HDF5_RESULTS_WRITER_H_

include/fesa/io/hdf5/hdf5_results_writer.hpp

@@ -1,17 +0,0 @@
-#pragma once
-
-#include "fesa/results/results_writer.h"
-
-namespace fesa {
-
-// Writes schema-v0 output while keeping backend and platform types private.
-class Hdf5ResultsWriter final : public ResultsWriter {
-public:
-    Status Write(
-        const std::filesystem::path& outputPath,
-        const Domain& domain,
-        const AnalysisState& state,
-        const std::vector<Diagnostic>& diagnostics) override;
-};
-
-} // namespace fesa

src/fesa/analysis/linear_static_analysis.cpp

@@ -5,8 +5,8 @@
 #include "fesa/assembly/load_assembler.h"
 #include "fesa/assembly/parallel_for.h"
 #include "fesa/assembly/sparse_assembler.h"
-#include "fesa/io/abaqus/domain_mapper.hpp"
-#include "fesa/io/abaqus/input_reader.hpp"
+#include "fesa/io/abaqus/domain_mapper.h"
+#include "fesa/io/abaqus/input_reader.h"
 #include "fesa/results/result_recovery.h"
 #include "fesa/results/results_writer.h"
 #include "fesa/solvers/linear/linear_solver.h"
@@ -65,11 +65,11 @@ Status LinearStaticAnalysis::Initialize(const AnalysisRequest& request) {
   diagnostics_.clear();
   request_ = request;
 
-  const auto parsed = AbaqusInputReader{}.read(request_.input_path);
+  const auto parsed = AbaqusInputReader{}.Read(request_.input_path);
   if (!parsed.HasValue()) {
     return parsed.GetStatus();
   }
-  auto domain = AbaqusDomainMapper{}.map(parsed.Value());
+  auto domain = AbaqusDomainMapper{}.Map(parsed.Value());
   if (!domain.HasValue()) {
     return domain.GetStatus();
   }

src/fesa/app/fesa_application.cpp

@@ -1,16 +1,16 @@
-#include "fesa/app/fesa_application.hpp"
-
-#include "fesa/analysis/linear_static_analysis.h"
-#include "fesa/assembly/parallel_for.h"
-#include "fesa/core/diagnostic.h"
-#include "fesa/io/hdf5/hdf5_results_writer.hpp"
-#include "fesa/solvers/linear/mkl_pardiso_solver.h"
+#include "fesa/app/fesa_application.h"
 
 #include <filesystem>
 #include <iostream>
 #include <string>
 #include <vector>
 
+#include "fesa/analysis/linear_static_analysis.h"
+#include "fesa/assembly/parallel_for.h"
+#include "fesa/core/diagnostic.h"
+#include "fesa/io/hdf5/hdf5_results_writer.h"
+#include "fesa/solvers/linear/mkl_pardiso_solver.h"
+
 namespace fesa {
 namespace {
 
@@ -21,13 +21,12 @@ constexpr int kModelExitCode = 4;
 constexpr int kSolverExitCode = 5;
 constexpr int kOutputExitCode = 6;
 
-bool startsWithOption(const std::string& argument) {
+bool StartsWithOption(const std::string& argument) {
   return !argument.empty() && argument.front() == '-';
 }
 
-Diagnostic usageDiagnostic() {
-    return {
-        Severity::kError,
+Diagnostic UsageDiagnostic() {
+  return {Severity::kError,
           "cli-usage",
           {{}, 0U},
           "",
@@ -35,29 +34,26 @@ Diagnostic usageDiagnostic() {
           "Usage: fesa.exe <model.inp> [--output <results.h5>]."};
 }
 
-const char* severityName(const Severity severity) {
+const char* SeverityName(const Severity severity) {
   return severity == Severity::kWarning ? "warning" : "error";
 }
 
-void writeDiagnostics(std::vector<Diagnostic> diagnostics) {
+void WriteDiagnostics(std::vector<Diagnostic> diagnostics) {
   SortDiagnostics(diagnostics);
   for (const auto& diagnostic : diagnostics) {
     // Stable field labels and tab separators keep empty source fields
     // explicit without depending on locale-specific formatting.
-        std::cerr
-            << "severity=" << severityName(diagnostic.severity)
-            << '\t' << "code=" << diagnostic.code
-            << '\t' << "file="
-            << diagnostic.location.file.generic_u8string()
-            << '\t' << "line=" << diagnostic.location.line
-            << '\t' << "keyword=" << diagnostic.keyword
-            << '\t' << "entity_identity=" << diagnostic.entity_identity
-            << '\t' << "message=" << diagnostic.message
-            << '\n';
+    std::cerr << "severity=" << SeverityName(diagnostic.severity) << '\t'
+              << "code=" << diagnostic.code << '\t'
+              << "file=" << diagnostic.location.file.generic_u8string() << '\t'
+              << "line=" << diagnostic.location.line << '\t'
+              << "keyword=" << diagnostic.keyword << '\t'
+              << "entity_identity=" << diagnostic.entity_identity << '\t'
+              << "message=" << diagnostic.message << '\n';
   }
 }
 
-int exitCodeFor(const Status& status) {
+int ExitCodeFor(const Status& status) {
   switch (status.Category().value_or(FailureCategory::kInput)) {
     case FailureCategory::kInput:
       return kInputExitCode;
@@ -73,41 +69,36 @@ int exitCodeFor(const Status& status) {
 
 }  // namespace
 
-int FesaApplication::run(const std::vector<std::string>& arguments) {
-    const bool defaultOutputForm =
-        arguments.size() == 1U &&
+int FesaApplication::Run(const std::vector<std::string>& arguments) {
+  const bool default_output_form = arguments.size() == 1U &&
                                    !arguments[0U].empty() &&
-        !startsWithOption(arguments[0U]);
-    const bool explicitOutputForm =
-        arguments.size() == 3U &&
-        !arguments[0U].empty() &&
-        !startsWithOption(arguments[0U]) &&
-        arguments[1U] == "--output" &&
-        !arguments[2U].empty() &&
-        !startsWithOption(arguments[2U]);
-    if (!defaultOutputForm && !explicitOutputForm) {
-        writeDiagnostics({usageDiagnostic()});
+                                   !StartsWithOption(arguments[0U]);
+  const bool explicit_output_form =
+      arguments.size() == 3U && !arguments[0U].empty() &&
+      !StartsWithOption(arguments[0U]) && arguments[1U] == "--output" &&
+      !arguments[2U].empty() && !StartsWithOption(arguments[2U]);
+  if (!default_output_form && !explicit_output_form) {
+    WriteDiagnostics({UsageDiagnostic()});
     return kUsageExitCode;
   }
 
   AnalysisRequest request;
   request.input_path = arguments[0U];
-    request.output_path = explicitOutputForm
+  request.output_path = explicit_output_form
                             ? std::filesystem::path{arguments[2U]}
                             : std::filesystem::current_path() / "results.h5";
 
-    TbbParallelFor parallelFor;
-    MklPardisoSolver linearSolver;
-    Hdf5ResultsWriter resultsWriter;
-    LinearStaticAnalysis analysis{
-        parallelFor, linearSolver, resultsWriter};
+  TbbParallelFor parallel_for;
+  MklPardisoSolver linear_solver;
+  Hdf5ResultsWriter results_writer;
+  LinearStaticAnalysis analysis{parallel_for, linear_solver, results_writer};
   const Status status = analysis.Run(request);
   if (status.IsOk()) {
     return kSuccessExitCode;
   }
 
-    writeDiagnostics(status.Diagnostics());
-    return exitCodeFor(status);
+  WriteDiagnostics(status.Diagnostics());
+  return ExitCodeFor(status);
 }
 
 }  // namespace fesa

src/fesa/app/main.cpp

@@ -1,9 +1,9 @@
-#include "fesa/app/fesa_application.hpp"
-
 #include <cstddef>
 #include <string>
 #include <vector>
 
+#include "fesa/app/fesa_application.h"
+
 int main(const int argc, char* argv[]) {
   std::vector<std::string> arguments;
   if (argc > 1) {
@@ -13,5 +13,5 @@ int main(const int argc, char* argv[]) {
   for (int index = 1; index < argc; ++index) {
     arguments.emplace_back(argv[index]);
   }
-    return fesa::FesaApplication{}.run(arguments);
+  return fesa::FesaApplication{}.Run(arguments);
 }

src/fesa/io/abaqus/input_reader.cpp

@@ -1,4 +1,4 @@
-#include "fesa/io/abaqus/input_reader.hpp"
+#include "fesa/io/abaqus/input_reader.h"
 
 #include <algorithm>
 #include <cstdint>
@@ -15,30 +15,29 @@
 namespace fesa {
 namespace {
 
-std::filesystem::path normalizedPath(const std::filesystem::path& path) {
+std::filesystem::path NormalizedPath(const std::filesystem::path& path) {
   std::error_code error;
   const auto absolute = std::filesystem::absolute(path, error);
   return (error ? path : absolute).lexically_normal();
 }
 
-bool isAsciiWhitespace(char value) noexcept {
-    return value == ' ' || value == '\t' || value == '\r' ||
-           value == '\n' || value == '\f' || value == '\v';
+bool IsAsciiWhitespace(char value) noexcept {
+  return value == ' ' || value == '\t' || value == '\r' || value == '\n' ||
+         value == '\f' || value == '\v';
 }
 
-std::string trim(std::string_view text) {
-    while (!text.empty() && isAsciiWhitespace(text.front())) {
+std::string Trim(std::string_view text) {
+  while (!text.empty() && IsAsciiWhitespace(text.front())) {
     text.remove_prefix(1U);
   }
-    while (!text.empty() && isAsciiWhitespace(text.back())) {
+  while (!text.empty() && IsAsciiWhitespace(text.back())) {
     text.remove_suffix(1U);
   }
   return std::string{text};
 }
 
-std::string uppercaseAscii(std::string value) {
-    std::transform(
-        value.begin(), value.end(), value.begin(), [](char character) {
+std::string UppercaseAscii(std::string value) {
+  std::transform(value.begin(), value.end(), value.begin(), [](char character) {
     if (character >= 'a' && character <= 'z') {
       return static_cast<char>(character - 'a' + 'A');
     }
@@ -47,167 +46,142 @@ std::string uppercaseAscii(std::string value) {
   return value;
 }
 
-std::vector<std::string> splitFields(std::string_view line) {
+std::vector<std::string> SplitFields(std::string_view line) {
   std::vector<std::string> fields;
-    std::size_t fieldStart = 0U;
+  std::size_t field_start = 0U;
   while (true) {
-        const std::size_t separator = line.find(',', fieldStart);
+    const std::size_t separator = line.find(',', field_start);
     if (separator == std::string_view::npos) {
-            fields.push_back(trim(line.substr(fieldStart)));
+      fields.push_back(Trim(line.substr(field_start)));
       break;
     }
-        fields.push_back(trim(line.substr(fieldStart, separator - fieldStart)));
-        fieldStart = separator + 1U;
+    fields.push_back(Trim(line.substr(field_start, separator - field_start)));
+    field_start = separator + 1U;
   }
   return fields;
 }
 
-std::string contentIdentity(const std::string& bytes) {
-    constexpr std::uint64_t offsetBasis = 14695981039346656037ULL;
-    constexpr std::uint64_t prime = 1099511628211ULL;
-    std::uint64_t hash = offsetBasis;
+/// @brief Computes the stable identity of the exact source bytes.
+/// @note This runs before line-ending handling so parser provenance is not
+/// affected by text normalization.
+std::string ContentIdentity(const std::string& bytes) {
+  constexpr std::uint64_t kOffsetBasis = 14695981039346656037ULL;
+  constexpr std::uint64_t kPrime = 1099511628211ULL;
+  std::uint64_t hash = kOffsetBasis;
   // Hash the binary input before CRLF handling so provenance follows the
   // exact file bytes rather than a normalized text representation.
   for (const unsigned char byte : bytes) {
     hash ^= static_cast<std::uint64_t>(byte);
-        hash *= prime;
+    hash *= kPrime;
   }
 
   std::ostringstream formatted;
-    formatted << "fnv1a64:" << std::hex << std::setfill('0')
-              << std::setw(16) << hash;
+  formatted << "fnv1a64:" << std::hex << std::setfill('0') << std::setw(16)
+            << hash;
   return formatted.str();
 }
 
-Result<ParsedInput> failure(
-    const std::filesystem::path& sourcePath,
-    std::size_t line,
-    std::string code,
-    std::string keyword,
-    std::string message) {
-    Diagnostic diagnostic{
-        Severity::kError,
+Result<ParsedInput> Failure(const std::filesystem::path& source_path,
+                            std::size_t line, std::string code,
+                            std::string keyword, std::string message) {
+  Diagnostic diagnostic{Severity::kError,
                         std::move(code),
-        {sourcePath, line},
+                        {source_path, line},
                         std::move(keyword),
                         "",
                         std::move(message)};
-    return Result<ParsedInput>::Failure(Status::Failure(
-        FailureCategory::kInput, {std::move(diagnostic)}));
+  return Result<ParsedInput>::Failure(
+      Status::Failure(FailureCategory::kInput, {std::move(diagnostic)}));
 }
 
 }  // namespace
 
-Result<ParsedInput> AbaqusInputReader::read(
-    const std::filesystem::path& inputPath) const {
-    const auto sourcePath = normalizedPath(inputPath);
-    std::ifstream stream{sourcePath, std::ios::binary};
+Result<ParsedInput> AbaqusInputReader::Read(
+    const std::filesystem::path& input_path) const {
+  const auto source_path = NormalizedPath(input_path);
+  std::ifstream stream{source_path, std::ios::binary};
   if (!stream) {
-        return failure(
-            sourcePath,
-            0U,
-            "input-file-unreadable",
-            "",
+    return Failure(source_path, 0U, "input-file-unreadable", "",
                    "The Abaqus input file could not be opened for reading.");
   }
 
-    const std::string bytes{
-        std::istreambuf_iterator<char>{stream},
+  const std::string bytes{std::istreambuf_iterator<char>{stream},
                           std::istreambuf_iterator<char>{}};
   if (stream.bad()) {
-        return failure(
-            sourcePath,
-            0U,
-            "input-file-unreadable",
-            "",
+    return Failure(source_path, 0U, "input-file-unreadable", "",
                    "The Abaqus input file could not be read completely.");
   }
 
-    ParsedInput parsed{sourcePath, contentIdentity(bytes), {}};
-    std::size_t lineStart = 0U;
-    std::size_t lineNumber = 1U;
-    while (lineStart < bytes.size()) {
-        const std::size_t newline = bytes.find('\n', lineStart);
-        const std::size_t lineEnd =
+  ParsedInput parsed{source_path, ContentIdentity(bytes), {}};
+  std::size_t line_start = 0U;
+  std::size_t line_number = 1U;
+  while (line_start < bytes.size()) {
+    const std::size_t newline = bytes.find('\n', line_start);
+    const std::size_t line_end =
         newline == std::string::npos ? bytes.size() : newline;
-        std::string originalLine = bytes.substr(lineStart, lineEnd - lineStart);
-        if (!originalLine.empty() && originalLine.back() == '\r') {
-            originalLine.pop_back();
+    std::string original_line = bytes.substr(line_start, line_end - line_start);
+    if (!original_line.empty() && original_line.back() == '\r') {
+      original_line.pop_back();
     }
 
-        const std::string trimmedLine = trim(originalLine);
-        if (!trimmedLine.empty() && trimmedLine.rfind("**", 0U) != 0U) {
-            if (trimmedLine.front() == '*') {
-                const auto fields = splitFields(trimmedLine);
-                const std::string keywordText =
-                    fields.empty() ? std::string{} : trim(
-                        std::string_view{fields[0]}.substr(1U));
-                if (keywordText.empty()) {
-                    return failure(
-                        sourcePath,
-                        lineNumber,
-                        "malformed-keyword",
-                        trimmedLine,
+    const std::string trimmed_line = Trim(original_line);
+    if (!trimmed_line.empty() && trimmed_line.rfind("**", 0U) != 0U) {
+      if (trimmed_line.front() == '*') {
+        const auto fields = SplitFields(trimmed_line);
+        const std::string keyword_text =
+            fields.empty() ? std::string{}
+                           : Trim(std::string_view{fields[0]}.substr(1U));
+        if (keyword_text.empty()) {
+          return Failure(source_path, line_number, "malformed-keyword",
+                         trimmed_line,
                          "A keyword line requires a non-empty keyword name.");
         }
 
-                KeywordBlock block{
-                    uppercaseAscii(keywordText),
-                    originalLine,
+        KeywordBlock block{UppercaseAscii(keyword_text),
+                           original_line,
                            {},
                            {},
-                    {sourcePath, lineNumber}};
+                           {source_path, line_number}};
         for (std::size_t index = 1U; index < fields.size(); ++index) {
           const std::string& field = fields[index];
           if (field.empty()) {
-                        return failure(
-                            sourcePath,
-                            lineNumber,
-                            "malformed-keyword",
-                            block.canonicalName,
+            return Failure(source_path, line_number, "malformed-keyword",
+                           block.canonical_name,
                            "A keyword parameter name cannot be empty.");
           }
 
           const std::size_t equals = field.find('=');
-                    const std::string parameterName = trim(std::string_view{field}.substr(
-                        0U, equals));
-                    if (parameterName.empty()) {
-                        return failure(
-                            sourcePath,
-                            lineNumber,
-                            "malformed-keyword",
-                            block.canonicalName,
+          const std::string parameter_name =
+              Trim(std::string_view{field}.substr(0U, equals));
+          if (parameter_name.empty()) {
+            return Failure(source_path, line_number, "malformed-keyword",
+                           block.canonical_name,
                            "A keyword parameter name cannot be empty.");
           }
 
-                    KeywordParameter parameter{
-                        uppercaseAscii(parameterName), std::nullopt};
+          KeywordParameter parameter{UppercaseAscii(parameter_name),
+                                     std::nullopt};
           if (equals != std::string::npos) {
-                        parameter.value = trim(
-                            std::string_view{field}.substr(equals + 1U));
+            parameter.value = Trim(std::string_view{field}.substr(equals + 1U));
           }
           block.parameters.push_back(std::move(parameter));
         }
         parsed.blocks.push_back(std::move(block));
       } else {
         if (parsed.blocks.empty()) {
-                    return failure(
-                        sourcePath,
-                        lineNumber,
-                        "orphan-data-line",
-                        "",
+          return Failure(source_path, line_number, "orphan-data-line", "",
                          "A data line must follow a keyword line.");
         }
         parsed.blocks.back().data.push_back(
-                    {splitFields(originalLine), {sourcePath, lineNumber}});
+            {SplitFields(original_line), {source_path, line_number}});
       }
     }
 
     if (newline == std::string::npos) {
       break;
     }
-        lineStart = newline + 1U;
-        ++lineNumber;
+    line_start = newline + 1U;
+    ++line_number;
   }
 
   return Result<ParsedInput>::Success(std::move(parsed));

tests/integration/app/fesa_application_test.cpp

@@ -1,4 +1,4 @@
-#include "fesa/app/fesa_application.hpp"
+#include "fesa/app/fesa_application.h"
 
 #include <gtest/gtest.h>
 #include <hdf5.h>
@@ -19,15 +19,13 @@ namespace {
 constexpr const char* kStepRoot = "/steps/Step-1/frames/0";
 
 class TempDirectory {
-public:
+ public:
   explicit TempDirectory(const std::string& label) {
     static std::atomic<unsigned long long> sequence{0U};
-        const auto tick = std::chrono::steady_clock::now()
-                              .time_since_epoch()
-                              .count();
+    const auto tick =
+        std::chrono::steady_clock::now().time_since_epoch().count();
     path_ = std::filesystem::temp_directory_path() /
-            ("fesa-step24-app-" + label + "-" +
-             std::to_string(tick) + "-" +
+            ("fesa-step24-app-" + label + "-" + std::to_string(tick) + "-" +
              std::to_string(sequence.fetch_add(1U)));
     std::error_code error;
     if (!std::filesystem::create_directory(path_, error) || error) {
@@ -43,14 +41,14 @@ public:
     std::filesystem::remove_all(path_, ignored);
   }
 
-    const std::filesystem::path& path() const noexcept { return path_; }
+  const std::filesystem::path& Path() const noexcept { return path_; }
 
-private:
+ private:
   std::filesystem::path path_;
 };
 
 class CurrentDirectoryGuard {
-public:
+ public:
   explicit CurrentDirectoryGuard(const std::filesystem::path& replacement)
       : original_{std::filesystem::current_path()} {
     std::filesystem::current_path(replacement);
@@ -64,12 +62,12 @@ public:
     std::filesystem::current_path(original_, ignored);
   }
 
-private:
+ private:
   std::filesystem::path original_;
 };
 
 class Hdf5Handle {
-public:
+ public:
   using Closer = herr_t (*)(hid_t);
 
   Hdf5Handle(const hid_t value, Closer closer)
@@ -87,14 +85,14 @@ public:
     }
   }
 
-    hid_t get() const noexcept { return value_; }
+  hid_t Get() const noexcept { return value_; }
 
-private:
+ private:
   hid_t value_{-1};
   Closer closer_{nullptr};
 };
 
-void writeText(const std::filesystem::path& path, const std::string& text) {
+void WriteText(const std::filesystem::path& path, const std::string& text) {
   std::ofstream stream{path, std::ios::binary | std::ios::trunc};
   stream.write(text.data(), static_cast<std::streamsize>(text.size()));
   if (!stream) {
@@ -102,18 +100,13 @@ void writeText(const std::filesystem::path& path, const std::string& text) {
   }
 }
 
-std::string axialDeck(
-    const bool constrained,
-    const bool zeroLength,
-    const bool outputRequests) {
-    const std::string secondNode = zeroLength
-        ? "2, 0., 0., 0.\n"
-        : "2, 2., 0., 0.\n";
-    const std::string boundaries = constrained
-        ? "*Boundary\nRoot, 1, 6\nTip, 2, 6\n"
-        : "";
-    const std::string outputs = outputRequests
-        ? R"inp(*Output, field
+std::string AxialDeck(const bool constrained, const bool zero_length,
+                      const bool output_requests) {
+  const std::string second_node =
+      zero_length ? "2, 0., 0., 0.\n" : "2, 2., 0., 0.\n";
+  const std::string boundaries =
+      constrained ? "*Boundary\nRoot, 1, 6\nTip, 2, 6\n" : "";
+  const std::string outputs = output_requests ? R"inp(*Output, field
 *Node Output
 U, RF
 *Element Output, directions=YES
@@ -126,7 +119,8 @@ S, SF
   return std::string{R"inp(*Part, name=BeamPart
 *Node
 1, 0., 0., 0.
-)inp"} + secondNode + R"inp(*Element, type=B33
+)inp"} + second_node +
+         R"inp(*Element, type=B33
 1, 1, 2
 *Elset, elset=BeamSet
 1
@@ -145,16 +139,18 @@ S, SF
 *Material, name=Steel
 *Elastic
 100., 0.25
-)inp" + boundaries + R"inp(*Step, name=Load, nlgeom=NO
+)inp" + boundaries +
+         R"inp(*Step, name=Load, nlgeom=NO
 *Static
 0.1, 1., 0.01, 1.
 *Cload
 Tip, 1, 10.
-)inp" + outputs + R"inp(*End Step
+)inp" + outputs +
+         R"inp(*End Step
 )inp";
 }
 
-std::string allConstrainedShellDeck() {
+std::string AllConstrainedShellDeck() {
   return R"inp(*Part, name=ShellPart
 *Node
 1, 0., 0., 0.
@@ -186,16 +182,16 @@ All, 1, 6
 )inp";
 }
 
-Hdf5Handle openFile(const std::filesystem::path& path) {
-    const hid_t file = H5Fopen(
-        path.string().c_str(), H5F_ACC_RDONLY, H5P_DEFAULT);
+Hdf5Handle OpenFile(const std::filesystem::path& path) {
+  const hid_t file =
+      H5Fopen(path.string().c_str(), H5F_ACC_RDONLY, H5P_DEFAULT);
   if (file < 0) {
     throw std::runtime_error{"Unable to open the CLI HDF5 artifact."};
   }
   return Hdf5Handle{file, H5Fclose};
 }
 
-Hdf5Handle openDataset(const hid_t file, const std::string& path) {
+Hdf5Handle OpenDataset(const hid_t file, const std::string& path) {
   const hid_t dataset = H5Dopen2(file, path.c_str(), H5P_DEFAULT);
   if (dataset < 0) {
     throw std::runtime_error{"Unable to open mandatory dataset: " + path};
@@ -203,49 +199,48 @@ Hdf5Handle openDataset(const hid_t file, const std::string& path) {
   return Hdf5Handle{dataset, H5Dclose};
 }
 
-std::vector<hsize_t> datasetDimensions(
-    const hid_t file, const std::string& path) {
-    const auto dataset = openDataset(file, path);
-    Hdf5Handle space{H5Dget_space(dataset.get()), H5Sclose};
-    const int rank = H5Sget_simple_extent_ndims(space.get());
-    if (space.get() < 0 || rank < 0) {
+std::vector<hsize_t> DatasetDimensions(const hid_t file,
+                                       const std::string& path) {
+  const auto dataset = OpenDataset(file, path);
+  Hdf5Handle space{H5Dget_space(dataset.Get()), H5Sclose};
+  const int rank = H5Sget_simple_extent_ndims(space.Get());
+  if (space.Get() < 0 || rank < 0) {
     throw std::runtime_error{"Unable to inspect mandatory dataset dimensions."};
   }
   std::vector<hsize_t> dimensions(static_cast<std::size_t>(rank));
   if (rank > 0 &&
-        H5Sget_simple_extent_dims(space.get(), dimensions.data(), nullptr) < 0) {
+      H5Sget_simple_extent_dims(space.Get(), dimensions.data(), nullptr) < 0) {
     throw std::runtime_error{"Unable to read mandatory dataset dimensions."};
   }
   return dimensions;
 }
 
-std::vector<double> readDoubleDataset(
-    const hid_t file, const std::string& path) {
-    const auto dimensions = datasetDimensions(file, path);
+std::vector<double> ReadDoubleDataset(const hid_t file,
+                                      const std::string& path) {
+  const auto dimensions = DatasetDimensions(file, path);
   std::size_t count = 1U;
   for (const hsize_t dimension : dimensions) {
     count *= static_cast<std::size_t>(dimension);
   }
-    const auto dataset = openDataset(file, path);
+  const auto dataset = OpenDataset(file, path);
   std::vector<double> values(count);
-    if (!values.empty() &&
-        H5Dread(dataset.get(), H5T_NATIVE_DOUBLE, H5S_ALL, H5S_ALL,
-                H5P_DEFAULT, values.data()) < 0) {
+  if (!values.empty() && H5Dread(dataset.Get(), H5T_NATIVE_DOUBLE, H5S_ALL,
+                                 H5S_ALL, H5P_DEFAULT, values.data()) < 0) {
     throw std::runtime_error{"Unable to read mandatory numeric results."};
   }
   return values;
 }
 
-std::string readStringAttribute(const hid_t object, const char* name) {
+std::string ReadStringAttribute(const hid_t object, const char* name) {
   Hdf5Handle attribute{H5Aopen(object, name, H5P_DEFAULT), H5Aclose};
-    Hdf5Handle type{H5Aget_type(attribute.get()), H5Tclose};
-    if (attribute.get() < 0 || type.get() < 0 ||
-        H5Tget_class(type.get()) != H5T_STRING ||
-        H5Tis_variable_str(type.get()) <= 0) {
+  Hdf5Handle type{H5Aget_type(attribute.Get()), H5Tclose};
+  if (attribute.Get() < 0 || type.Get() < 0 ||
+      H5Tget_class(type.Get()) != H5T_STRING ||
+      H5Tis_variable_str(type.Get()) <= 0) {
     throw std::runtime_error{"Expected a variable-length string attribute."};
   }
   char* raw = nullptr;
-    if (H5Aread(attribute.get(), type.get(), &raw) < 0 || raw == nullptr) {
+  if (H5Aread(attribute.Get(), type.Get(), &raw) < 0 || raw == nullptr) {
     throw std::runtime_error{"Unable to read the HDF5 identity attribute."};
   }
   const std::string value{raw};
@@ -253,108 +248,92 @@ std::string readStringAttribute(const hid_t object, const char* name) {
   return value;
 }
 
-void expectMandatoryInventory(const hid_t file) {
-    for (const char* path : {
-             "/metadata",
-             "/model/nodes",
-             "/model/elements",
+void ExpectMandatoryInventory(const hid_t file) {
+  for (const char* path :
+       {"/metadata", "/model/nodes", "/model/elements",
         "/steps/Step-1/frames/0/nodal/displacement",
         "/steps/Step-1/frames/0/nodal/reaction",
         "/steps/Step-1/frames/0/element/end_force_local",
         "/steps/Step-1/frames/0/element/section_resultant",
         "/steps/Step-1/frames/0/element/generalized_strain",
         "/steps/Step-1/frames/0/element/generalized_resultant",
-             "/steps/Step-1/frames/0/element/stress_s11",
-             "/diagnostics"}) {
+        "/steps/Step-1/frames/0/element/stress_s11", "/diagnostics"}) {
     EXPECT_GT(H5Lexists(file, path, H5P_DEFAULT), 0) << path;
   }
 }
 
-void expectFesaHdf5Identity(
-    const std::filesystem::path& output,
+void ExpectFesaHdf5Identity(const std::filesystem::path& output,
                             const std::filesystem::path& input) {
   ASSERT_TRUE(std::filesystem::exists(output));
   ASSERT_GT(H5Fis_hdf5(output.string().c_str()), 0);
-    const auto file = openFile(output);
-    expectMandatoryInventory(file.get());
-    Hdf5Handle metadata{
-        H5Gopen2(file.get(), "/metadata", H5P_DEFAULT), H5Gclose};
-    ASSERT_GE(metadata.get(), 0);
-    EXPECT_EQ(
-        readStringAttribute(metadata.get(), "feature_id"),
+  const auto file = OpenFile(output);
+  ExpectMandatoryInventory(file.Get());
+  Hdf5Handle metadata{H5Gopen2(file.Get(), "/metadata", H5P_DEFAULT), H5Gclose};
+  ASSERT_GE(metadata.Get(), 0);
+  EXPECT_EQ(ReadStringAttribute(metadata.Get(), "feature_id"),
             "linear-static-3d-euler-beam");
-    const std::string normalizedInput =
+  const std::string normalized_input =
       std::filesystem::absolute(input).lexically_normal().generic_u8string();
-    EXPECT_EQ(
-        readStringAttribute(metadata.get(), "source_input_identity").find(
-            "path=" + normalizedInput + ";content_identity="),
+  EXPECT_EQ(ReadStringAttribute(metadata.Get(), "source_input_identity")
+                .find("path=" + normalized_input + ";content_identity="),
             0U);
 }
 
-void expectShellHdf5Identity(
-    const std::filesystem::path& output,
+void ExpectShellHdf5Identity(const std::filesystem::path& output,
                              const std::filesystem::path& input) {
   ASSERT_TRUE(std::filesystem::exists(output));
   ASSERT_GT(H5Fis_hdf5(output.string().c_str()), 0);
-    const auto file = openFile(output);
-    Hdf5Handle metadata{
-        H5Gopen2(file.get(), "/metadata", H5P_DEFAULT), H5Gclose};
-    ASSERT_GE(metadata.get(), 0);
-    EXPECT_EQ(
-        readStringAttribute(metadata.get(), "feature_id"),
+  const auto file = OpenFile(output);
+  Hdf5Handle metadata{H5Gopen2(file.Get(), "/metadata", H5P_DEFAULT), H5Gclose};
+  ASSERT_GE(metadata.Get(), 0);
+  EXPECT_EQ(ReadStringAttribute(metadata.Get(), "feature_id"),
             "linear-static-mitc4-shell");
-    EXPECT_GT(
-        H5Lexists(
-            file.get(),
+  EXPECT_GT(H5Lexists(file.Get(),
                       "/steps/Step-1/frames/0/element/shell/generalized_strain",
                       H5P_DEFAULT),
             0);
-    EXPECT_EQ(
-        datasetDimensions(
-            file.get(),
+  EXPECT_EQ(DatasetDimensions(file.Get(),
                               "/steps/Step-1/frames/0/nodal/displacement"),
             (std::vector<hsize_t>{4U, 6U}));
-    const std::string normalizedInput =
+  const std::string normalized_input =
       std::filesystem::absolute(input).lexically_normal().generic_u8string();
-    EXPECT_EQ(
-        readStringAttribute(metadata.get(), "source_input_identity").find(
-            "path=" + normalizedInput + ";content_identity="),
+  EXPECT_EQ(ReadStringAttribute(metadata.Get(), "source_input_identity")
+                .find("path=" + normalized_input + ";content_identity="),
             0U);
 }
 
 struct AppRun {
-    int exitCode;
-    std::string standardError;
+  int exit_code;
+  std::string standard_error;
 };
 
-AppRun runApplication(const std::vector<std::string>& arguments) {
+AppRun RunApplication(const std::vector<std::string>& arguments) {
   testing::internal::CaptureStderr();
   try {
-        const int exitCode = fesa::FesaApplication{}.run(arguments);
-        return {exitCode, testing::internal::GetCapturedStderr()};
+    const int exit_code = fesa::FesaApplication{}.Run(arguments);
+    return {exit_code, testing::internal::GetCapturedStderr()};
   } catch (...) {
     (void)testing::internal::GetCapturedStderr();
     throw;
   }
 }
 
-void expectDiagnosticFieldOrder(const std::string& text) {
+void ExpectDiagnosticFieldOrder(const std::string& text) {
   ASSERT_FALSE(text.empty());
   std::size_t cursor = 0U;
-    for (const char* field : {
-             "severity", "code", "file", "line", "keyword",
+  for (const char* field : {"severity", "code", "file", "line", "keyword",
                             "entity_identity", "message"}) {
     const auto position = text.find(field, cursor);
     ASSERT_NE(position, std::string::npos)
         << "Missing or out-of-order diagnostic field: " << field
-            << "\nstderr:\n" << text;
+        << "\nstderr:\n"
+        << text;
     cursor = position + std::string{field}.size();
   }
 }
 
-std::vector<std::string> explicitOutputArguments(
-    const std::filesystem::path& input,
-    const std::filesystem::path& output) {
+std::vector<std::string> ExplicitOutputArguments(
+    const std::filesystem::path& input, const std::filesystem::path& output) {
   // FesaApplication receives argv[0]-excluded operands and options.
   return {input.string(), "--output", output.string()};
 }
@@ -363,122 +342,117 @@ std::vector<std::string> explicitOutputArguments(
 
 TEST(LinearStaticCli, DefaultAndExplicitOutputProduceFesaHdf5) {
   TempDirectory directory{"paths"};
-    const auto input = directory.path() / "model.inp";
-    writeText(input, axialDeck(true, false, false));
+  const auto input = directory.Path() / "model.inp";
+  WriteText(input, AxialDeck(true, false, false));
 
-    const auto defaultOutput = directory.path() / "results.h5";
+  const auto default_output = directory.Path() / "results.h5";
   {
-        CurrentDirectoryGuard currentDirectory{directory.path()};
-        const auto result = runApplication({input.string()});
-        ASSERT_EQ(result.exitCode, 0) << result.standardError;
+    CurrentDirectoryGuard current_directory{directory.Path()};
+    const auto result = RunApplication({input.string()});
+    ASSERT_EQ(result.exit_code, 0) << result.standard_error;
   }
-    expectFesaHdf5Identity(defaultOutput, input);
+  ExpectFesaHdf5Identity(default_output, input);
 
-    const auto explicitOutput = directory.path() / "named-output.h5";
-    const auto result = runApplication(
-        explicitOutputArguments(input, explicitOutput));
-    ASSERT_EQ(result.exitCode, 0) << result.standardError;
-    expectFesaHdf5Identity(explicitOutput, input);
+  const auto explicit_output = directory.Path() / "named-output.h5";
+  const auto result =
+      RunApplication(ExplicitOutputArguments(input, explicit_output));
+  ASSERT_EQ(result.exit_code, 0) << result.standard_error;
+  ExpectFesaHdf5Identity(explicit_output, input);
 }
 
 TEST(LinearStaticCli, ReturnsEveryExactExitCodeAndOrderedDiagnostic) {
   TempDirectory directory{"exit-codes"};
-    const auto validInput = directory.path() / "valid.inp";
-    const auto modelInput = directory.path() / "invalid-model.inp";
-    const auto solverInput = directory.path() / "singular.inp";
-    writeText(validInput, axialDeck(true, false, false));
-    writeText(modelInput, axialDeck(true, true, false));
-    writeText(solverInput, axialDeck(false, false, false));
+  const auto valid_input = directory.Path() / "valid.inp";
+  const auto model_input = directory.Path() / "invalid-model.inp";
+  const auto solver_input = directory.Path() / "singular.inp";
+  WriteText(valid_input, AxialDeck(true, false, false));
+  WriteText(model_input, AxialDeck(true, true, false));
+  WriteText(solver_input, AxialDeck(false, false, false));
 
-    const auto success = runApplication(explicitOutputArguments(
-        validInput, directory.path() / "success.h5"));
-    const auto usage = runApplication({});
-    const auto missingInput = directory.path() / "missing.inp";
-    const auto input = runApplication({missingInput.string()});
-    const auto repeatedOutput = runApplication(
-        {missingInput.string(), "--output", "--output"});
-    const auto unknownOutputOption = runApplication(
-        {missingInput.string(), "--output", "--bogus"});
-    const auto model = runApplication(explicitOutputArguments(
-        modelInput, directory.path() / "model-failure.h5"));
-    const auto solver = runApplication(explicitOutputArguments(
-        solverInput, directory.path() / "solver-failure.h5"));
-    const auto output = runApplication(explicitOutputArguments(
-        validInput,
-        directory.path() / "nonexistent-parent" / "results.h5"));
+  const auto success = RunApplication(
+      ExplicitOutputArguments(valid_input, directory.Path() / "success.h5"));
+  const auto usage = RunApplication({});
+  const auto missing_input = directory.Path() / "missing.inp";
+  const auto input = RunApplication({missing_input.string()});
+  const auto repeated_output =
+      RunApplication({missing_input.string(), "--output", "--output"});
+  const auto unknown_output_option =
+      RunApplication({missing_input.string(), "--output", "--bogus"});
+  const auto model = RunApplication(ExplicitOutputArguments(
+      model_input, directory.Path() / "model-failure.h5"));
+  const auto solver = RunApplication(ExplicitOutputArguments(
+      solver_input, directory.Path() / "solver-failure.h5"));
+  const auto output = RunApplication(ExplicitOutputArguments(
+      valid_input, directory.Path() / "nonexistent-parent" / "results.h5"));
 
-    EXPECT_EQ(success.exitCode, 0) << success.standardError;
-    EXPECT_EQ(usage.exitCode, 2);
-    EXPECT_EQ(input.exitCode, 3);
-    EXPECT_EQ(model.exitCode, 4);
-    EXPECT_EQ(solver.exitCode, 5);
-    EXPECT_EQ(output.exitCode, 6);
+  EXPECT_EQ(success.exit_code, 0) << success.standard_error;
+  EXPECT_EQ(usage.exit_code, 2);
+  EXPECT_EQ(input.exit_code, 3);
+  EXPECT_EQ(model.exit_code, 4);
+  EXPECT_EQ(solver.exit_code, 5);
+  EXPECT_EQ(output.exit_code, 6);
 
-    expectDiagnosticFieldOrder(usage.standardError);
-    expectDiagnosticFieldOrder(input.standardError);
-    expectDiagnosticFieldOrder(model.standardError);
-    expectDiagnosticFieldOrder(solver.standardError);
-    expectDiagnosticFieldOrder(output.standardError);
-    EXPECT_EQ(repeatedOutput.exitCode, 2);
-    expectDiagnosticFieldOrder(repeatedOutput.standardError);
-    EXPECT_NE(repeatedOutput.standardError.find("code=cli-usage"),
+  ExpectDiagnosticFieldOrder(usage.standard_error);
+  ExpectDiagnosticFieldOrder(input.standard_error);
+  ExpectDiagnosticFieldOrder(model.standard_error);
+  ExpectDiagnosticFieldOrder(solver.standard_error);
+  ExpectDiagnosticFieldOrder(output.standard_error);
+  EXPECT_EQ(repeated_output.exit_code, 2);
+  ExpectDiagnosticFieldOrder(repeated_output.standard_error);
+  EXPECT_NE(repeated_output.standard_error.find("code=cli-usage"),
             std::string::npos);
-    EXPECT_EQ(unknownOutputOption.exitCode, 2);
-    expectDiagnosticFieldOrder(unknownOutputOption.standardError);
-    EXPECT_NE(unknownOutputOption.standardError.find("code=cli-usage"),
+  EXPECT_EQ(unknown_output_option.exit_code, 2);
+  ExpectDiagnosticFieldOrder(unknown_output_option.standard_error);
+  EXPECT_NE(unknown_output_option.standard_error.find("code=cli-usage"),
             std::string::npos);
 }
 
 TEST(LinearStaticCli, OutputRequestsDoNotFilterMandatoryResults) {
   TempDirectory directory{"output-requests"};
-    const auto plainInput = directory.path() / "plain.inp";
-    const auto requestedInput = directory.path() / "requested.inp";
-    const auto plainOutput = directory.path() / "plain.h5";
-    const auto requestedOutput = directory.path() / "requested.h5";
-    writeText(plainInput, axialDeck(true, false, false));
-    writeText(requestedInput, axialDeck(true, false, true));
+  const auto plain_input = directory.Path() / "plain.inp";
+  const auto requested_input = directory.Path() / "requested.inp";
+  const auto plain_output = directory.Path() / "plain.h5";
+  const auto requested_output = directory.Path() / "requested.h5";
+  WriteText(plain_input, AxialDeck(true, false, false));
+  WriteText(requested_input, AxialDeck(true, false, true));
 
-    const auto plain = runApplication(
-        explicitOutputArguments(plainInput, plainOutput));
-    const auto requested = runApplication(
-        explicitOutputArguments(requestedInput, requestedOutput));
-    ASSERT_EQ(plain.exitCode, 0) << plain.standardError;
-    ASSERT_EQ(requested.exitCode, 0) << requested.standardError;
+  const auto plain =
+      RunApplication(ExplicitOutputArguments(plain_input, plain_output));
+  const auto requested = RunApplication(
+      ExplicitOutputArguments(requested_input, requested_output));
+  ASSERT_EQ(plain.exit_code, 0) << plain.standard_error;
+  ASSERT_EQ(requested.exit_code, 0) << requested.standard_error;
 
-    const auto plainFile = openFile(plainOutput);
-    const auto requestedFile = openFile(requestedOutput);
-    expectMandatoryInventory(plainFile.get());
-    expectMandatoryInventory(requestedFile.get());
+  const auto plain_file = OpenFile(plain_output);
+  const auto requested_file = OpenFile(requested_output);
+  ExpectMandatoryInventory(plain_file.Get());
+  ExpectMandatoryInventory(requested_file.Get());
 
-    for (const char* suffix : {
-             "/nodal/displacement",
-             "/nodal/reaction",
-             "/element/end_force_local",
-             "/element/section_resultant",
-             "/element/generalized_strain",
+  for (const char* suffix :
+       {"/nodal/displacement", "/nodal/reaction", "/element/end_force_local",
+        "/element/section_resultant", "/element/generalized_strain",
         "/element/generalized_resultant"}) {
     const std::string path = std::string{kStepRoot} + suffix;
-        EXPECT_EQ(
-            readDoubleDataset(requestedFile.get(), path),
-            readDoubleDataset(plainFile.get(), path))
+    EXPECT_EQ(ReadDoubleDataset(requested_file.Get(), path),
+              ReadDoubleDataset(plain_file.Get(), path))
         << path;
   }
-    EXPECT_EQ(datasetDimensions(plainFile.get(), "/diagnostics"),
+  EXPECT_EQ(DatasetDimensions(plain_file.Get(), "/diagnostics"),
             std::vector<hsize_t>({0U}));
-    const auto requestedDiagnostics =
-        datasetDimensions(requestedFile.get(), "/diagnostics");
-    ASSERT_EQ(requestedDiagnostics.size(), 1U);
-    EXPECT_GT(requestedDiagnostics[0U], 0U);
+  const auto requested_diagnostics =
+      DatasetDimensions(requested_file.Get(), "/diagnostics");
+  ASSERT_EQ(requested_diagnostics.size(), 1U);
+  EXPECT_GT(requested_diagnostics[0U], 0U);
 }
 
 // MITC4-FLOW-001: shell input uses the unchanged application route and syntax.
 TEST(Mitc4ShellCli, WritesShellHdf5ThroughTheExistingApplicationRoute) {
   TempDirectory directory{"shell-route"};
-    const auto input = directory.path() / "shell.inp";
-    const auto output = directory.path() / "shell-results.h5";
-    writeText(input, allConstrainedShellDeck());
+  const auto input = directory.Path() / "shell.inp";
+  const auto output = directory.Path() / "shell-results.h5";
+  WriteText(input, AllConstrainedShellDeck());
 
-    const auto result = runApplication(explicitOutputArguments(input, output));
-    ASSERT_EQ(result.exitCode, 0) << result.standardError;
-    expectShellHdf5Identity(output, input);
+  const auto result = RunApplication(ExplicitOutputArguments(input, output));
+  ASSERT_EQ(result.exit_code, 0) << result.standard_error;
+  ExpectShellHdf5Identity(output, input);
 }

tests/reference/b33_reference_comparison_test.cpp

@@ -1,10 +1,5 @@
-#include "reference_comparison.hpp"
-
-#include "fesa/app/fesa_application.hpp"
-
-#include <hdf5.h>
-
 #include <gtest/gtest.h>
+#include <hdf5.h>
 
 #include <algorithm>
 #include <array>
@@ -17,6 +12,9 @@
 #include <string>
 #include <vector>
 
+#include "fesa/app/fesa_application.h"
+#include "reference_comparison.h"
+
 #ifndef FESA_TEST_SOURCE_DIR
 #error FESA_TEST_SOURCE_DIR must identify the repository root.
 #endif
@@ -27,13 +25,12 @@
 
 namespace {
 
-constexpr const char* kStressPath =
-    "/steps/Step-1/frames/0/element/stress_s11";
+constexpr const char* kStressPath = "/steps/Step-1/frames/0/element/stress_s11";
 constexpr std::size_t kExpectedRowCount = 176U;
 constexpr std::size_t kExpectedMetricCount = 16U;
 
 class Hdf5Handle {
-public:
+ public:
   using Closer = herr_t (*)(hid_t);
 
   Hdf5Handle(const hid_t value, Closer closer)
@@ -46,21 +43,21 @@ public:
     }
   }
 
-    hid_t get() const noexcept { return value_; }
+  hid_t Get() const noexcept { return value_; }
 
-private:
+ private:
   hid_t value_;
   Closer closer_;
 };
 
 struct ReferenceSnapshotEntry {
-    std::filesystem::path relativePath;
-    bool isDirectory;
+  std::filesystem::path relative_path;
+  bool is_directory;
   std::string bytes;
-    std::filesystem::file_time_type lastWriteTime;
+  std::filesystem::file_time_type last_write_time;
 };
 
-std::string readBytes(const std::filesystem::path& path) {
+std::string ReadBytes(const std::filesystem::path& path) {
   std::ifstream stream{path, std::ios::binary};
   if (!stream) {
     throw std::runtime_error{"Unable to read reference evidence: " +
@@ -70,85 +67,77 @@ std::string readBytes(const std::filesystem::path& path) {
           std::istreambuf_iterator<char>{}};
 }
 
-std::vector<ReferenceSnapshotEntry> snapshotTree(
+std::vector<ReferenceSnapshotEntry> SnapshotTree(
     const std::filesystem::path& root) {
   std::vector<ReferenceSnapshotEntry> entries;
-    for (const auto& entry : std::filesystem::recursive_directory_iterator{root}) {
-        const bool isDirectory = entry.is_directory();
-        if (!isDirectory && !entry.is_regular_file()) {
+  for (const auto& entry :
+       std::filesystem::recursive_directory_iterator{root}) {
+    const bool is_directory = entry.is_directory();
+    if (!is_directory && !entry.is_regular_file()) {
       throw std::runtime_error{"Unexpected reference-tree entry type."};
     }
-        entries.push_back({
-            std::filesystem::relative(entry.path(), root),
-            isDirectory,
-            isDirectory ? std::string{} : readBytes(entry.path()),
+    entries.push_back({std::filesystem::relative(entry.path(), root),
+                       is_directory,
+                       is_directory ? std::string{} : ReadBytes(entry.path()),
                        entry.last_write_time()});
   }
-    std::sort(
-        entries.begin(),
-        entries.end(),
+  std::sort(entries.begin(), entries.end(),
             [](const ReferenceSnapshotEntry& left,
                const ReferenceSnapshotEntry& right) {
-            return left.relativePath.generic_string() <
-                   right.relativePath.generic_string();
+              return left.relative_path.generic_string() <
+                     right.relative_path.generic_string();
             });
   return entries;
 }
 
-void expectTreeUnchanged(
-    const std::vector<ReferenceSnapshotEntry>& before,
+void ExpectTreeUnchanged(const std::vector<ReferenceSnapshotEntry>& before,
                          const std::vector<ReferenceSnapshotEntry>& after) {
   ASSERT_EQ(after.size(), before.size());
   for (std::size_t index = 0U; index < before.size(); ++index) {
-        EXPECT_EQ(after[index].relativePath, before[index].relativePath);
-        EXPECT_EQ(after[index].isDirectory, before[index].isDirectory);
+    EXPECT_EQ(after[index].relative_path, before[index].relative_path);
+    EXPECT_EQ(after[index].is_directory, before[index].is_directory);
     EXPECT_EQ(after[index].bytes, before[index].bytes)
-            << before[index].relativePath.string();
-        EXPECT_EQ(after[index].lastWriteTime, before[index].lastWriteTime)
-            << before[index].relativePath.string();
+        << before[index].relative_path.string();
+    EXPECT_EQ(after[index].last_write_time, before[index].last_write_time)
+        << before[index].relative_path.string();
   }
 }
 
-double norm(const std::array<double, 3>& value) {
-    return std::sqrt(
-        value[0U] * value[0U] + value[1U] * value[1U] +
+double Norm(const std::array<double, 3>& value) {
+  return std::sqrt(value[0U] * value[0U] + value[1U] * value[1U] +
                    value[2U] * value[2U]);
 }
 
-std::array<double, 3> sum(
-    const std::array<double, 3>& left,
+std::array<double, 3> Sum(const std::array<double, 3>& left,
                           const std::array<double, 3>& right) {
-    return {
-        left[0U] + right[0U],
-        left[1U] + right[1U],
-        left[2U] + right[2U]};
+  return {left[0U] + right[0U], left[1U] + right[1U], left[2U] + right[2U]};
 }
 
-std::size_t stressRowCount(const std::filesystem::path& results) {
-    const hid_t fileId =
+std::size_t StressRowCount(const std::filesystem::path& results) {
+  const hid_t file_id =
       H5Fopen(results.string().c_str(), H5F_ACC_RDONLY, H5P_DEFAULT);
-    if (fileId < 0) {
+  if (file_id < 0) {
     throw std::runtime_error{"Unable to open authoritative HDF5 output."};
   }
-    const Hdf5Handle file{fileId, H5Fclose};
-    if (H5Lexists(file.get(), kStressPath, H5P_DEFAULT) <= 0) {
+  const Hdf5Handle file{file_id, H5Fclose};
+  if (H5Lexists(file.Get(), kStressPath, H5P_DEFAULT) <= 0) {
     throw std::runtime_error{"Mandatory stress_s11 dataset is missing."};
   }
-    const hid_t datasetId = H5Dopen2(file.get(), kStressPath, H5P_DEFAULT);
-    if (datasetId < 0) {
+  const hid_t dataset_id = H5Dopen2(file.Get(), kStressPath, H5P_DEFAULT);
+  if (dataset_id < 0) {
     throw std::runtime_error{"Unable to open mandatory stress_s11 dataset."};
   }
-    const Hdf5Handle dataset{datasetId, H5Dclose};
-    const hid_t spaceId = H5Dget_space(dataset.get());
-    if (spaceId < 0) {
+  const Hdf5Handle dataset{dataset_id, H5Dclose};
+  const hid_t space_id = H5Dget_space(dataset.Get());
+  if (space_id < 0) {
     throw std::runtime_error{"Unable to inspect stress_s11 dataspace."};
   }
-    const Hdf5Handle space{spaceId, H5Sclose};
-    if (H5Sget_simple_extent_ndims(space.get()) != 1) {
+  const Hdf5Handle space{space_id, H5Sclose};
+  if (H5Sget_simple_extent_ndims(space.Get()) != 1) {
     throw std::runtime_error{"stress_s11 must be a flat row dataset."};
   }
   hsize_t count = 0U;
-    if (H5Sget_simple_extent_dims(space.get(), &count, nullptr) < 0) {
+  if (H5Sget_simple_extent_dims(space.Get(), &count, nullptr) < 0) {
     throw std::runtime_error{"Unable to read stress_s11 extent."};
   }
   return static_cast<std::size_t>(count);
@@ -156,121 +145,104 @@ std::size_t stressRowCount(const std::filesystem::path& results) {
 
 }  // namespace
 
-TEST(B33ReferenceComparison,
-     GeneratesAuthoritativeHdf5AndComparisonEvidence) {
-    const std::filesystem::path sourceRoot{FESA_TEST_SOURCE_DIR};
-    const std::filesystem::path binaryRoot{FESA_TEST_BINARY_DIR};
-    const auto referenceDirectory =
-        sourceRoot / "reference" / "cantilever beam";
-    const auto input = referenceDirectory / "cantilever beam.inp";
-    const auto outputDirectory =
-        binaryRoot / "reference" / "cantilever-beam-b33";
-    const auto results = outputDirectory / "results.h5";
-    const auto comparison = outputDirectory / "comparison.json";
+TEST(B33ReferenceComparison, GeneratesAuthoritativeHdf5AndComparisonEvidence) {
+  const std::filesystem::path source_root{FESA_TEST_SOURCE_DIR};
+  const std::filesystem::path binary_root{FESA_TEST_BINARY_DIR};
+  const auto reference_directory =
+      source_root / "reference" / "cantilever beam";
+  const auto input = reference_directory / "cantilever beam.inp";
+  const auto output_directory =
+      binary_root / "reference" / "cantilever-beam-b33";
+  const auto results = output_directory / "results.h5";
+  const auto comparison = output_directory / "comparison.json";
 
   // Only the exact build-local evidence directory is reset; the approved
   // reference tree is snapshotted and subsequently opened read-only.
   std::error_code error;
-    std::filesystem::remove_all(outputDirectory, error);
+  std::filesystem::remove_all(output_directory, error);
   error.clear();
-    ASSERT_TRUE(std::filesystem::create_directories(outputDirectory, error));
+  ASSERT_TRUE(std::filesystem::create_directories(output_directory, error));
   ASSERT_FALSE(error);
-    const auto referenceBefore = snapshotTree(referenceDirectory);
-    ASSERT_EQ(referenceBefore.size(), 4U);
-    EXPECT_EQ(
-        referenceBefore[0U].relativePath,
+  const auto reference_before = SnapshotTree(reference_directory);
+  ASSERT_EQ(reference_before.size(), 4U);
+  EXPECT_EQ(reference_before[0U].relative_path,
             std::filesystem::path{"cantilever beam displacements.csv"});
-    EXPECT_EQ(
-        referenceBefore[1U].relativePath,
+  EXPECT_EQ(reference_before[1U].relative_path,
             std::filesystem::path{"cantilever beam elemental forces.csv"});
-    EXPECT_EQ(
-        referenceBefore[2U].relativePath,
+  EXPECT_EQ(reference_before[2U].relative_path,
             std::filesystem::path{"cantilever beam reactions.csv"});
-    EXPECT_EQ(
-        referenceBefore[3U].relativePath,
+  EXPECT_EQ(reference_before[3U].relative_path,
             std::filesystem::path{"cantilever beam.inp"});
 
   fesa::FesaApplication application;
   // FesaApplication receives application operands/options; main strips argv[0].
-    ASSERT_EQ(
-        application.run(
-            {input.string(), "--output", results.string()}),
-        0);
+  ASSERT_EQ(application.Run({input.string(), "--output", results.string()}), 0);
   ASSERT_TRUE(std::filesystem::is_regular_file(results));
   ASSERT_GT(H5Fis_hdf5(results.string().c_str()), 0);
-    EXPECT_GT(stressRowCount(results), 0U);
+  EXPECT_GT(StressRowCount(results), 0U);
 
-    auto comparisonResult = fesa::test::ReferenceComparison::compare(
-        results, referenceDirectory);
-    ASSERT_TRUE(comparisonResult.HasValue());
-    const auto& report = comparisonResult.Value();
+  auto comparison_result =
+      fesa::test::ReferenceComparison::Compare(results, reference_directory);
+  ASSERT_TRUE(comparison_result.HasValue());
+  const auto& report = comparison_result.Value();
   ASSERT_TRUE(report.passed);
   ASSERT_EQ(report.rows.size(), kExpectedRowCount);
   ASSERT_EQ(report.metrics.size(), kExpectedMetricCount);
   EXPECT_TRUE(std::all_of(
-        report.rows.begin(),
-        report.rows.end(),
+      report.rows.begin(), report.rows.end(),
       [](const fesa::test::RowDecision& row) {
-            return row.passed && std::isfinite(row.absoluteError) &&
+        return row.passed && std::isfinite(row.absolute_error) &&
                std::isfinite(row.tolerance) && row.tolerance > 0.0 &&
-                   row.fesa.modelId == "cantilever-beam-b33" &&
-                   row.reference.modelId == "cantilever-beam-b33" &&
-                   row.fesa.stepName == "Step-1" &&
-                   row.reference.stepName == "Step-1" &&
-                   row.fesa.frameIndex == 0U &&
-                   row.reference.frameIndex == 0U &&
-                   row.fesa.instanceName == "PART-1_1-1" &&
-                   row.reference.instanceName == "PART-1_1-1" &&
-                   !row.fesa.hdf5DatasetPath.empty();
+               row.fesa.model_id == "cantilever-beam-b33" &&
+               row.reference.model_id == "cantilever-beam-b33" &&
+               row.fesa.step_name == "Step-1" &&
+               row.reference.step_name == "Step-1" &&
+               row.fesa.frame_index == 0U && row.reference.frame_index == 0U &&
+               row.fesa.instance_name == "PART-1_1-1" &&
+               row.reference.instance_name == "PART-1_1-1" &&
+               !row.fesa.hdf5_dataset_path.empty();
       }));
-    EXPECT_TRUE(std::all_of(
-        report.metrics.begin(),
-        report.metrics.end(),
+  EXPECT_TRUE(
+      std::all_of(report.metrics.begin(), report.metrics.end(),
                   [](const fesa::test::ComponentMetrics& metric) {
-            return std::isfinite(metric.referenceScale) &&
-                   std::isfinite(metric.maximumAbsoluteError) &&
-                   std::isfinite(metric.maximumNormalizedError) &&
-                   std::isfinite(metric.rmsError) &&
-                   std::isfinite(metric.normError) &&
-                   metric.maximumNormalizedError <= 1.0;
+                    return std::isfinite(metric.reference_scale) &&
+                           std::isfinite(metric.maximum_absolute_error) &&
+                           std::isfinite(metric.maximum_normalized_error) &&
+                           std::isfinite(metric.rms_error) &&
+                           std::isfinite(metric.norm_error) &&
+                           metric.maximum_normalized_error <= 1.0;
                   }));
 
-    EXPECT_FALSE(report.stressComparisonApplicable);
-    EXPECT_NE(report.stressComparisonReason.find("N/A"), std::string::npos);
-    EXPECT_NE(report.stressComparisonReason.find("HDF5"), std::string::npos);
-    EXPECT_TRUE(report.physicsEvidence.endpointConsistencyPassed);
-    EXPECT_TRUE(std::isfinite(report.physicsEvidence.freeResidualNorm));
-    EXPECT_LE(report.physicsEvidence.freeResidualNorm, 1.0e-3);
-    EXPECT_LE(
-        norm(sum(
-            report.physicsEvidence.appliedForce,
-            report.physicsEvidence.reactionForce)),
+  EXPECT_FALSE(report.stress_comparison_applicable);
+  EXPECT_NE(report.stress_comparison_reason.find("N/A"), std::string::npos);
+  EXPECT_NE(report.stress_comparison_reason.find("HDF5"), std::string::npos);
+  EXPECT_TRUE(report.physics_evidence.endpoint_consistency_passed);
+  EXPECT_TRUE(std::isfinite(report.physics_evidence.free_residual_norm));
+  EXPECT_LE(report.physics_evidence.free_residual_norm, 1.0e-3);
+  EXPECT_LE(Norm(Sum(report.physics_evidence.applied_force,
+                     report.physics_evidence.reaction_force)),
             1.0e-3);
-    EXPECT_LE(
-        norm(sum(
-            report.physicsEvidence.appliedMomentAboutOrigin,
-            report.physicsEvidence.reactionMomentAboutOrigin)),
+  EXPECT_LE(Norm(Sum(report.physics_evidence.applied_moment_about_origin,
+                     report.physics_evidence.reaction_moment_about_origin)),
             1.0e-2);
 
-    ASSERT_TRUE(
-        fesa::test::ReferenceComparison::writeDeterministicJson(
+  ASSERT_TRUE(fesa::test::ReferenceComparison::WriteDeterministicJson(
                   report, comparison)
                   .IsOk());
   ASSERT_TRUE(std::filesystem::is_regular_file(comparison));
-    const std::string json = readBytes(comparison);
+  const std::string json = ReadBytes(comparison);
   EXPECT_NE(json.find("\"stress_comparison_applicable\":false"),
             std::string::npos);
   EXPECT_NE(json.find("\"physics_evidence\""), std::string::npos);
 
-    std::vector<std::string> generatedNames;
+  std::vector<std::string> generated_names;
   for (const auto& entry :
-         std::filesystem::directory_iterator{outputDirectory}) {
-        generatedNames.push_back(entry.path().filename().string());
+       std::filesystem::directory_iterator{output_directory}) {
+    generated_names.push_back(entry.path().filename().string());
   }
-    std::sort(generatedNames.begin(), generatedNames.end());
-    EXPECT_EQ(
-        generatedNames,
+  std::sort(generated_names.begin(), generated_names.end());
+  EXPECT_EQ(generated_names,
             (std::vector<std::string>{"comparison.json", "results.h5"}));
 
-    expectTreeUnchanged(referenceBefore, snapshotTree(referenceDirectory));
+  ExpectTreeUnchanged(reference_before, SnapshotTree(reference_directory));
 }

tests/reference/mitc4_reference_cases_test.cpp

@@ -1,7 +1,3 @@
-#include "mitc4_reference_comparison.hpp"
-
-#include "fesa/app/fesa_application.hpp"
-
 #include <gtest/gtest.h>
 
 #include <algorithm>
@@ -14,6 +10,9 @@
 #include <utility>
 #include <vector>
 
+#include "fesa/app/fesa_application.h"
+#include "mitc4_reference_comparison.h"
+
 #ifndef FESA_TEST_SOURCE_DIR
 #error FESA_TEST_SOURCE_DIR must identify the repository root.
 #endif
@@ -30,7 +29,7 @@ constexpr const char* kIntegrationRule =
 constexpr std::size_t kNodeCount = 49U;
 constexpr std::size_t kComponentCount = 6U;
 
-std::string readBytes(const std::filesystem::path& path) {
+std::string ReadBytes(const std::filesystem::path& path) {
   std::ifstream stream{path, std::ios::binary};
   if (!stream) {
     throw std::runtime_error{"Unable to read declared reference artifact."};
@@ -41,117 +40,106 @@ std::string readBytes(const std::filesystem::path& path) {
 
 struct ArtifactSnapshot {
   std::string bytes;
-    std::filesystem::file_time_type lastWriteTime;
+  std::filesystem::file_time_type last_write_time;
 };
 
-ArtifactSnapshot snapshot(const std::filesystem::path& path) {
-    return {readBytes(path), std::filesystem::last_write_time(path)};
+ArtifactSnapshot Snapshot(const std::filesystem::path& path) {
+  return {ReadBytes(path), std::filesystem::last_write_time(path)};
 }
 
-void expectUnchanged(
-    const std::filesystem::path& path, const ArtifactSnapshot& before) {
-    EXPECT_EQ(readBytes(path), before.bytes) << path.string();
-    EXPECT_EQ(std::filesystem::last_write_time(path), before.lastWriteTime)
+void ExpectUnchanged(const std::filesystem::path& path,
+                     const ArtifactSnapshot& before) {
+  EXPECT_EQ(ReadBytes(path), before.bytes) << path.string();
+  EXPECT_EQ(std::filesystem::last_write_time(path), before.last_write_time)
       << path.string();
 }
 
 struct CaseEvidence {
   fesa::test::Mitc4ComparisonReport report;
-    std::filesystem::path comparisonJson;
+  std::filesystem::path comparison_json;
 };
 
-CaseEvidence runCase(
-    const std::string& caseId,
-    const std::string& sourceElementType,
-    const std::filesystem::path& referenceDirectory,
+CaseEvidence RunCase(const std::string& case_id,
+                     const std::string& source_element_type,
+                     const std::filesystem::path& reference_directory,
                      const std::filesystem::path& input,
                      const std::filesystem::path& csv,
-    const std::string& outputName) {
-    const auto inputBefore = snapshot(input);
-    const auto csvBefore = snapshot(csv);
-    const std::filesystem::path outputDirectory =
-        std::filesystem::path{FESA_TEST_BINARY_DIR} / "reference" / outputName;
+                     const std::string& output_name) {
+  const auto input_before = Snapshot(input);
+  const auto csv_before = Snapshot(csv);
+  const std::filesystem::path output_directory =
+      std::filesystem::path{FESA_TEST_BINARY_DIR} / "reference" / output_name;
   std::error_code error;
-    std::filesystem::remove_all(outputDirectory, error);
+  std::filesystem::remove_all(output_directory, error);
   error.clear();
-    if (!std::filesystem::create_directories(outputDirectory, error) || error) {
+  if (!std::filesystem::create_directories(output_directory, error) || error) {
     throw std::runtime_error{"Unable to create MITC4 evidence directory."};
   }
-    const auto results = outputDirectory / "results.h5";
-    const auto comparison = outputDirectory / "comparison.json";
+  const auto results = output_directory / "results.h5";
+  const auto comparison = output_directory / "comparison.json";
 
   fesa::FesaApplication application;
-    EXPECT_EQ(
-        application.run({input.string(), "--output", results.string()}), 0);
+  EXPECT_EQ(application.Run({input.string(), "--output", results.string()}), 0);
   EXPECT_TRUE(std::filesystem::is_regular_file(results));
-    auto comparisonResult = fesa::test::Mitc4ReferenceComparison::compare(
-        {caseId, sourceElementType, input, csv, results});
-    if (!comparisonResult.HasValue()) {
+  auto comparison_result = fesa::test::Mitc4ReferenceComparison::Compare(
+      {case_id, source_element_type, input, csv, results});
+  if (!comparison_result.HasValue()) {
     std::string diagnostics;
-        for (const auto& diagnostic :
-             comparisonResult.GetStatus().Diagnostics()) {
+    for (const auto& diagnostic : comparison_result.GetStatus().Diagnostics()) {
       diagnostics += "\n" + diagnostic.code + ": " + diagnostic.message;
     }
-        ADD_FAILURE() << "MITC4 comparison precheck failed for " << caseId
+    ADD_FAILURE() << "MITC4 comparison precheck failed for " << case_id
                   << diagnostics;
     return {{}, comparison};
   }
-    EXPECT_TRUE(
-        fesa::test::Mitc4ReferenceComparison::writeDeterministicJson(
-            comparisonResult.Value(), comparison)
+  EXPECT_TRUE(fesa::test::Mitc4ReferenceComparison::WriteDeterministicJson(
+                  comparison_result.Value(), comparison)
                   .IsOk());
   EXPECT_TRUE(std::filesystem::is_regular_file(comparison));
 
   std::vector<std::string> generated;
   for (const auto& entry :
-         std::filesystem::directory_iterator{outputDirectory}) {
+       std::filesystem::directory_iterator{output_directory}) {
     generated.push_back(entry.path().filename().string());
   }
   std::sort(generated.begin(), generated.end());
-    EXPECT_EQ(
-        generated,
+  EXPECT_EQ(generated,
             (std::vector<std::string>{"comparison.json", "results.h5"}));
-    EXPECT_TRUE(std::filesystem::is_directory(referenceDirectory));
-    expectUnchanged(input, inputBefore);
-    expectUnchanged(csv, csvBefore);
-    return {std::move(comparisonResult.Value()), comparison};
+  EXPECT_TRUE(std::filesystem::is_directory(reference_directory));
+  ExpectUnchanged(input, input_before);
+  ExpectUnchanged(csv, csv_before);
+  return {std::move(comparison_result.Value()), comparison};
 }
 
-void expectCommonMetadata(
-    const fesa::test::Mitc4ComparisonReport& report,
-    const std::string& caseId,
-    const std::string& sourceElementType) {
-    EXPECT_EQ(report.caseId, caseId);
-    EXPECT_EQ(report.sourceElementType, sourceElementType);
-    EXPECT_EQ(report.internalFormulation, kInternalFormulation);
-    EXPECT_EQ(report.integrationRule, kIntegrationRule);
+void ExpectCommonMetadata(const fesa::test::Mitc4ComparisonReport& report,
+                          const std::string& case_id,
+                          const std::string& source_element_type) {
+  EXPECT_EQ(report.case_id, case_id);
+  EXPECT_EQ(report.source_element_type, source_element_type);
+  EXPECT_EQ(report.internal_formulation, kInternalFormulation);
+  EXPECT_EQ(report.integration_rule, kIntegrationRule);
 }
 
-void expectComparisonCoverage(
-    const fesa::test::Mitc4ComparisonReport& report) {
+void ExpectComparisonCoverage(const fesa::test::Mitc4ComparisonReport& report) {
   ASSERT_EQ(report.rows.size(), kNodeCount * kComponentCount);
   ASSERT_EQ(report.metrics.size(), kComponentCount);
-    ASSERT_EQ(report.vectorMetrics.size(), kNodeCount);
+  ASSERT_EQ(report.vector_metrics.size(), kNodeCount);
   EXPECT_TRUE(report.passed);
-    const std::size_t blockingRows = static_cast<std::size_t>(std::count_if(
+  const std::size_t blocking_rows = static_cast<std::size_t>(std::count_if(
       report.rows.begin(), report.rows.end(),
+      [](const fesa::test::Mitc4RowDecision& row) { return row.blocking; }));
+  const std::size_t rotation_rows = report.rows.size() - blocking_rows;
+  EXPECT_EQ(blocking_rows, kNodeCount * 3U);
+  EXPECT_EQ(rotation_rows, kNodeCount * 3U);
+  EXPECT_TRUE(std::all_of(report.rows.begin(), report.rows.end(),
                           [](const fesa::test::Mitc4RowDecision& row) {
-            return row.blocking;
+                            return !row.blocking || row.within_tolerance;
                           }));
-    const std::size_t rotationRows = report.rows.size() - blockingRows;
-    EXPECT_EQ(blockingRows, kNodeCount * 3U);
-    EXPECT_EQ(rotationRows, kNodeCount * 3U);
-    EXPECT_TRUE(std::all_of(
-        report.rows.begin(), report.rows.end(),
+  EXPECT_EQ(report.warnings.size(),
+            static_cast<std::size_t>(
+                std::count_if(report.rows.begin(), report.rows.end(),
                               [](const fesa::test::Mitc4RowDecision& row) {
-            return !row.blocking || row.withinTolerance;
-        }));
-    EXPECT_EQ(
-        report.warnings.size(),
-        static_cast<std::size_t>(std::count_if(
-            report.rows.begin(), report.rows.end(),
-            [](const fesa::test::Mitc4RowDecision& row) {
-                return !row.blocking && !row.withinTolerance;
+                                return !row.blocking && !row.within_tolerance;
                               })));
 }
 
@@ -159,21 +147,21 @@ void expectComparisonCoverage(
 TEST(Mitc4S4Reference, PreservesS4AndWritesCommonMitc4Metadata) {
   const std::filesystem::path root{FESA_TEST_SOURCE_DIR};
   const auto directory = root / "reference" / "shell";
-    const auto evidence = runCase(
-        "shell-s4", "S4", directory, directory / "shell.inp",
+  const auto evidence =
+      RunCase("shell-s4", "S4", directory, directory / "shell.inp",
               directory / "shell displacements.csv", "mitc4-shell-s4-metadata");
-    expectCommonMetadata(evidence.report, "shell-s4", "S4");
+  ExpectCommonMetadata(evidence.report, "shell-s4", "S4");
 }
 
 // MITC4-E2E-S4-002
 TEST(Mitc4S4Reference, PassesBlockingUAndReportsEveryUrRow) {
   const std::filesystem::path root{FESA_TEST_SOURCE_DIR};
   const auto directory = root / "reference" / "shell";
-    const auto evidence = runCase(
+  const auto evidence = RunCase(
       "shell-s4", "S4", directory, directory / "shell.inp",
       directory / "shell displacements.csv", "mitc4-shell-s4-comparison");
-    expectCommonMetadata(evidence.report, "shell-s4", "S4");
-    expectComparisonCoverage(evidence.report);
+  ExpectCommonMetadata(evidence.report, "shell-s4", "S4");
+  ExpectComparisonCoverage(evidence.report);
 }
 
 }  // namespace

tests/reference/mitc4_reference_comparison.h

@@ -0,0 +1,84 @@
+#ifndef FESA_TESTS_REFERENCE_MITC4_REFERENCE_COMPARISON_H_
+#define FESA_TESTS_REFERENCE_MITC4_REFERENCE_COMPARISON_H_
+
+#include <cstddef>
+#include <cstdint>
+#include <filesystem>
+#include <string>
+#include <vector>
+
+#include "fesa/core/status.h"
+
+namespace fesa::test {
+
+struct Mitc4ReferenceCase {
+  std::string case_id;
+  std::string expected_source_element_type;
+  std::filesystem::path input_path;
+  std::filesystem::path displacement_csv_path;
+  std::filesystem::path results_hdf5_path;
+};
+
+struct Mitc4RowDecision {
+  std::string case_id;
+  std::string instance_name;
+  std::int64_t source_node_label;
+  std::string component;
+  double fesa_value;
+  double reference_value;
+  double absolute_error;
+  double tolerance;
+  double normalized_error;
+  bool blocking;
+  bool within_tolerance;
+};
+
+struct Mitc4ComponentMetrics {
+  std::string component;
+  double reference_scale;
+  double tolerance;
+  double maximum_absolute_error;
+  double maximum_normalized_error;
+  double rms_error;
+  double vector_norm_error;
+  std::size_t worst_row;
+};
+
+struct Mitc4VectorMetrics {
+  std::string instance_name;
+  std::int64_t source_node_label;
+  double displacement_norm_error;
+  double rotation_norm_error;
+};
+
+struct Mitc4Warning {
+  std::string code;
+  std::size_t row;
+  std::string message;
+};
+
+struct Mitc4ComparisonReport {
+  std::string case_id;
+  std::string source_element_type;
+  std::string internal_formulation;
+  std::string integration_rule;
+  std::vector<Mitc4RowDecision> rows;
+  std::vector<Mitc4ComponentMetrics> metrics;
+  std::vector<Mitc4VectorMetrics> vector_metrics;
+  std::vector<Mitc4Warning> warnings;
+  std::size_t worst_row;
+  bool passed;
+};
+
+class Mitc4ReferenceComparison {
+ public:
+  static Result<Mitc4ComparisonReport> Compare(
+      const Mitc4ReferenceCase& reference_case);
+  static Status WriteDeterministicJson(
+      const Mitc4ComparisonReport& report,
+      const std::filesystem::path& output_json);
+};
+
+}  // namespace fesa::test
+
+#endif  // FESA_TESTS_REFERENCE_MITC4_REFERENCE_COMPARISON_H_

tests/reference/mitc4_reference_comparison.hpp

@@ -1,81 +0,0 @@
-#pragma once
-
-#include "fesa/core/status.h"
-
-#include <cstddef>
-#include <cstdint>
-#include <filesystem>
-#include <string>
-#include <vector>
-
-namespace fesa::test {
-
-struct Mitc4ReferenceCase {
-    std::string caseId;
-    std::string expectedSourceElementType;
-    std::filesystem::path inputPath;
-    std::filesystem::path displacementCsvPath;
-    std::filesystem::path resultsHdf5Path;
-};
-
-struct Mitc4RowDecision {
-    std::string caseId;
-    std::string instanceName;
-    std::int64_t sourceNodeLabel;
-    std::string component;
-    double fesaValue;
-    double referenceValue;
-    double absoluteError;
-    double tolerance;
-    double normalizedError;
-    bool blocking;
-    bool withinTolerance;
-};
-
-struct Mitc4ComponentMetrics {
-    std::string component;
-    double referenceScale;
-    double tolerance;
-    double maximumAbsoluteError;
-    double maximumNormalizedError;
-    double rmsError;
-    double vectorNormError;
-    std::size_t worstRow;
-};
-
-struct Mitc4VectorMetrics {
-    std::string instanceName;
-    std::int64_t sourceNodeLabel;
-    double displacementNormError;
-    double rotationNormError;
-};
-
-struct Mitc4Warning {
-    std::string code;
-    std::size_t row;
-    std::string message;
-};
-
-struct Mitc4ComparisonReport {
-    std::string caseId;
-    std::string sourceElementType;
-    std::string internalFormulation;
-    std::string integrationRule;
-    std::vector<Mitc4RowDecision> rows;
-    std::vector<Mitc4ComponentMetrics> metrics;
-    std::vector<Mitc4VectorMetrics> vectorMetrics;
-    std::vector<Mitc4Warning> warnings;
-    std::size_t worstRow;
-    bool passed;
-};
-
-class Mitc4ReferenceComparison {
-public:
-    static Result<Mitc4ComparisonReport> compare(
-        const Mitc4ReferenceCase& referenceCase);
-    static Status writeDeterministicJson(
-        const Mitc4ComparisonReport& report,
-        const std::filesystem::path& outputJson);
-};
-
-} // namespace fesa::test

tests/reference/reference_comparison.h

@@ -0,0 +1,81 @@
+#ifndef FESA_TESTS_REFERENCE_REFERENCE_COMPARISON_H_
+#define FESA_TESTS_REFERENCE_REFERENCE_COMPARISON_H_
+
+#include <array>
+#include <cstddef>
+#include <cstdint>
+#include <filesystem>
+#include <string>
+#include <vector>
+
+#include "fesa/core/status.h"
+
+namespace fesa::test {
+
+enum class ComparisonQuantity { kDisplacement, kReaction, kSectionResultant };
+
+struct CanonicalComparisonRow {
+  std::string model_id;
+  std::string step_name;
+  std::size_t frame_index;
+  std::string instance_name;
+  std::int64_t source_node_label;
+  ComparisonQuantity quantity;
+  std::string component;
+  double value;
+  std::string unit_dimension;
+  std::string coordinate_system;
+  std::string hdf5_dataset_path;
+};
+
+struct RowDecision {
+  CanonicalComparisonRow fesa;
+  CanonicalComparisonRow reference;
+  double absolute_error;
+  double tolerance;
+  bool passed;
+};
+
+struct ComponentMetrics {
+  ComparisonQuantity quantity;
+  std::string component;
+  double reference_scale;
+  double maximum_absolute_error;
+  double maximum_normalized_error;
+  double rms_error;
+  double norm_error;
+  std::size_t worst_row;
+};
+
+struct PhysicsEvidence {
+  double free_residual_norm;
+  std::array<double, 3> applied_force;
+  std::array<double, 3> reaction_force;
+  std::array<double, 3> applied_moment_about_origin;
+  std::array<double, 3> reaction_moment_about_origin;
+  bool endpoint_consistency_passed;
+};
+
+struct ComparisonReport {
+  std::vector<RowDecision> rows;
+  std::vector<ComponentMetrics> metrics;
+  PhysicsEvidence physics_evidence;
+  bool stress_comparison_applicable;
+  std::string stress_comparison_reason;
+  bool passed;
+};
+
+// Test-only comparison support keeps Abaqus artifacts read-only and exposes no
+// backend handles to the implementation or downstream verification Steps.
+class ReferenceComparison {
+ public:
+  static Result<ComparisonReport> Compare(
+      const std::filesystem::path& results_hdf5,
+      const std::filesystem::path& legacy_reference_directory);
+  static Status WriteDeterministicJson(
+      const ComparisonReport& report, const std::filesystem::path& output_json);
+};
+
+}  // namespace fesa::test
+
+#endif  // FESA_TESTS_REFERENCE_REFERENCE_COMPARISON_H_

tests/reference/reference_comparison.hpp

@@ -1,83 +0,0 @@
-#pragma once
-
-#include "fesa/core/status.h"
-
-#include <array>
-#include <cstddef>
-#include <cstdint>
-#include <filesystem>
-#include <string>
-#include <vector>
-
-namespace fesa::test {
-
-enum class ComparisonQuantity {
-    displacement,
-    reaction,
-    sectionResultant
-};
-
-struct CanonicalComparisonRow {
-    std::string modelId;
-    std::string stepName;
-    std::size_t frameIndex;
-    std::string instanceName;
-    std::int64_t sourceNodeLabel;
-    ComparisonQuantity quantity;
-    std::string component;
-    double value;
-    std::string unitDimension;
-    std::string coordinateSystem;
-    std::string hdf5DatasetPath;
-};
-
-struct RowDecision {
-    CanonicalComparisonRow fesa;
-    CanonicalComparisonRow reference;
-    double absoluteError;
-    double tolerance;
-    bool passed;
-};
-
-struct ComponentMetrics {
-    ComparisonQuantity quantity;
-    std::string component;
-    double referenceScale;
-    double maximumAbsoluteError;
-    double maximumNormalizedError;
-    double rmsError;
-    double normError;
-    std::size_t worstRow;
-};
-
-struct PhysicsEvidence {
-    double freeResidualNorm;
-    std::array<double, 3> appliedForce;
-    std::array<double, 3> reactionForce;
-    std::array<double, 3> appliedMomentAboutOrigin;
-    std::array<double, 3> reactionMomentAboutOrigin;
-    bool endpointConsistencyPassed;
-};
-
-struct ComparisonReport {
-    std::vector<RowDecision> rows;
-    std::vector<ComponentMetrics> metrics;
-    PhysicsEvidence physicsEvidence;
-    bool stressComparisonApplicable;
-    std::string stressComparisonReason;
-    bool passed;
-};
-
-// Test-only comparison support keeps Abaqus artifacts read-only and exposes no
-// backend handles to the implementation or downstream verification Steps.
-class ReferenceComparison {
-public:
-    static Result<ComparisonReport> compare(
-        const std::filesystem::path& resultsHdf5,
-        const std::filesystem::path& legacyReferenceDirectory);
-    static Status writeDeterministicJson(
-        const ComparisonReport& report,
-        const std::filesystem::path& outputJson);
-};
-
-} // namespace fesa::test

tests/reference/reference_comparison_test.cpp

@@ -1,11 +1,4 @@
-#include "reference_comparison.hpp"
-
-#include "fesa/analysis/analysis_model.h"
-#include "fesa/analysis/analysis_state.h"
-#include "fesa/fem/dof_manager.h"
-#include "fesa/io/abaqus/input_reader.hpp"
-#include "fesa/io/hdf5/hdf5_results_writer.hpp"
-#include "fesa/model/domain.h"
+#include "reference_comparison.h"
 
 #include <gtest/gtest.h>
 
@@ -24,6 +17,13 @@
 #include <utility>
 #include <vector>
 
+#include "fesa/analysis/analysis_model.h"
+#include "fesa/analysis/analysis_state.h"
+#include "fesa/fem/dof_manager.h"
+#include "fesa/io/abaqus/input_reader.h"
+#include "fesa/io/hdf5/hdf5_results_writer.h"
+#include "fesa/model/domain.h"
+
 #ifndef FESA_TEST_SOURCE_DIR
 #error FESA_TEST_SOURCE_DIR must identify the repository root.
 #endif
@@ -51,20 +51,20 @@ using EndpointValues =
 struct ComparisonValues {
   NodalValues displacement{};
   NodalValues reaction{};
-    EndpointValues sectionResultants{};
+  EndpointValues section_resultants{};
 };
 
-const std::filesystem::path& sourceRoot() {
-    static const std::filesystem::path root{FESA_TEST_SOURCE_DIR};
-    return root;
+const std::filesystem::path& SourceRoot() {
+  static const std::filesystem::path kRoot{FESA_TEST_SOURCE_DIR};
+  return kRoot;
 }
 
-const std::filesystem::path& binaryRoot() {
-    static const std::filesystem::path root{FESA_TEST_BINARY_DIR};
-    return root;
+const std::filesystem::path& BinaryRoot() {
+  static const std::filesystem::path kRoot{FESA_TEST_BINARY_DIR};
+  return kRoot;
 }
 
-std::string readBytes(const std::filesystem::path& path) {
+std::string ReadBytes(const std::filesystem::path& path) {
   std::ifstream stream{path, std::ios::binary};
   if (!stream) {
     throw std::runtime_error{"Unable to read fixture: " + path.string()};
@@ -73,7 +73,8 @@ std::string readBytes(const std::filesystem::path& path) {
           std::istreambuf_iterator<char>{}};
 }
 
-void writeBytes(const std::filesystem::path& path, const std::string& contents) {
+void WriteBytes(const std::filesystem::path& path,
+                const std::string& contents) {
   std::ofstream stream{path, std::ios::binary | std::ios::trunc};
   if (!stream) {
     throw std::runtime_error{"Unable to write build-local fixture: " +
@@ -85,7 +86,7 @@ void writeBytes(const std::filesystem::path& path, const std::string& contents)
   }
 }
 
-std::vector<std::string> readLines(const std::filesystem::path& path) {
+std::vector<std::string> ReadLines(const std::filesystem::path& path) {
   std::ifstream stream{path};
   if (!stream) {
     throw std::runtime_error{"Unable to read fixture lines."};
@@ -100,8 +101,7 @@ std::vector<std::string> readLines(const std::filesystem::path& path) {
   return lines;
 }
 
-void writeLines(
-    const std::filesystem::path& path,
+void WriteLines(const std::filesystem::path& path,
                 const std::vector<std::string>& lines) {
   std::ofstream stream{path, std::ios::trunc};
   if (!stream) {
@@ -115,9 +115,7 @@ void writeLines(
   }
 }
 
-void replaceFirst(
-    std::string& contents,
-    const std::string& from,
+void ReplaceFirst(std::string& contents, const std::string& from,
                   const std::string& to) {
   const std::size_t position = contents.find(from);
   if (position == std::string::npos) {
@@ -126,32 +124,16 @@ void replaceFirst(
   contents.replace(position, from.size(), to);
 }
 
-ComparisonValues referenceValues() {
+ComparisonValues ReferenceValues() {
   ComparisonValues values{};
   const std::array<double, kNodeCount> uz = {
-        -1.0e-30,
-        -2.761905780e-4,
-        -1.066667140e-3,
-        -2.314286540e-3,
-        -3.961906300e-3,
-        -5.952383390e-3,
-        -8.228574880e-3,
-        -1.073333810e-2,
-        -1.340952890e-2,
-        -1.620000600e-2,
-        -1.904762720e-2};
+      -1.0e-30,        -2.761905780e-4, -1.066667140e-3, -2.314286540e-3,
+      -3.961906300e-3, -5.952383390e-3, -8.228574880e-3, -1.073333810e-2,
+      -1.340952890e-2, -1.620000600e-2, -1.904762720e-2};
   const std::array<double, kNodeCount> ury = {
-        1.0e-29,
-        5.428573350e-4,
-        1.028571860e-3,
-        1.457143460e-3,
-        1.828572130e-3,
-        2.142857990e-3,
-        2.400001050e-3,
-        2.600000940e-3,
-        2.742858140e-3,
-        2.828572640e-3,
-        2.857143990e-3};
+      1.0e-29,        5.428573350e-4, 1.028571860e-3, 1.457143460e-3,
+      1.828572130e-3, 2.142857990e-3, 2.400001050e-3, 2.600000940e-3,
+      2.742858140e-3, 2.828572640e-3, 2.857143990e-3};
   std::array<std::array<double, 4>, kNodeCount> stations{};
   for (std::size_t node = 0U; node < kNodeCount; ++node) {
     values.displacement[node][2U] = uz[node];
@@ -163,29 +145,25 @@ ComparisonValues referenceValues() {
   values.reaction[0U][2U] = 1.0e6;
   values.reaction[0U][4U] = -1.0e7;
   for (std::size_t element = 0U; element < kElementCount; ++element) {
-        values.sectionResultants[element][0U] = stations[element];
-        values.sectionResultants[element][1U] = stations[element + 1U];
+    values.section_resultants[element][0U] = stations[element];
+    values.section_resultants[element][1U] = stations[element + 1U];
   }
   return values;
 }
 
-fesa::ModelDefinition makeDefinition(
-    const std::filesystem::path& input,
-    std::string sourceContentIdentity) {
+fesa::ModelDefinition MakeDefinition(const std::filesystem::path& input,
+                                     std::string source_content_identity) {
   fesa::ModelDefinition definition{};
   definition.source_path = input;
-    definition.source_content_identity = std::move(sourceContentIdentity);
+  definition.source_content_identity = std::move(source_content_identity);
   for (std::size_t node = 0U; node < kNodeCount; ++node) {
     const auto label = static_cast<std::int64_t>(node + 1U);
-        definition.nodes.push_back({
-            {kInstanceName, label, std::to_string(label)},
+    definition.nodes.push_back({{kInstanceName, label, std::to_string(label)},
                                 {static_cast<double>(node), 0.0, 0.0},
                                 {input, node + 1U}});
   }
-    definition.materials.push_back(
-        {"Material-1", 2.1e11, 0.3, {input, 20U}});
-    definition.sections.push_back({
-        "Section-1",
+  definition.materials.push_back({"Material-1", 2.1e11, 0.3, {input, 20U}});
+  definition.sections.push_back({"Section-1",
                                  1.0,
                                  0.0833333,
                                  0.0,
@@ -196,8 +174,8 @@ fesa::ModelDefinition makeDefinition(
                                  {input, 30U}});
   for (std::size_t element = 0U; element < kElementCount; ++element) {
     const auto label = static_cast<std::int64_t>(element + 1U);
-        definition.elements.push_back({
-            {kInstanceName, label, std::to_string(label)},
+    definition.elements.push_back(
+        {{kInstanceName, label, std::to_string(label)},
          {static_cast<fesa::EntityIndex>(element),
           static_cast<fesa::EntityIndex>(element + 1U)},
          0U,
@@ -209,32 +187,32 @@ fesa::ModelDefinition makeDefinition(
   return definition;
 }
 
-void writeResultsFixture(
-    const std::filesystem::path& output,
+void WriteResultsFixture(const std::filesystem::path& output,
                          const std::filesystem::path& input,
                          const ComparisonValues& values) {
-    auto parsedInput = fesa::AbaqusInputReader{}.read(input);
-    if (!parsedInput.HasValue()) {
+  auto parsed_input = fesa::AbaqusInputReader{}.Read(input);
+  if (!parsed_input.HasValue()) {
     throw std::runtime_error{"Reference fixture input identity read failed."};
   }
-    auto domainResult = fesa::Domain::Create(
-        makeDefinition(input, parsedInput.Value().sourceContentIdentity));
-    if (!domainResult.HasValue()) {
+  auto domain_result = fesa::Domain::Create(
+      MakeDefinition(input, parsed_input.Value().source_content_identity));
+  if (!domain_result.HasValue()) {
     throw std::runtime_error{"Reference fixture Domain construction failed."};
   }
-    fesa::Domain domain = std::move(domainResult.Value());
-    auto modelResult = fesa::AnalysisModel::Create(domain);
-    if (!modelResult.HasValue()) {
-        throw std::runtime_error{"Reference fixture AnalysisModel construction failed."};
+  fesa::Domain domain = std::move(domain_result.Value());
+  auto model_result = fesa::AnalysisModel::Create(domain);
+  if (!model_result.HasValue()) {
+    throw std::runtime_error{
+        "Reference fixture AnalysisModel construction failed."};
   }
-    fesa::AnalysisModel model = std::move(modelResult.Value());
-    auto dofsResult = fesa::DofManager::Create(model);
-    if (!dofsResult.HasValue()) {
-        throw std::runtime_error{"Reference fixture DofManager construction failed."};
+  fesa::AnalysisModel model = std::move(model_result.Value());
+  auto dofs_result = fesa::DofManager::Create(model);
+  if (!dofs_result.HasValue()) {
+    throw std::runtime_error{
+        "Reference fixture DofManager construction failed."};
   }
-    fesa::DofManager dofs = std::move(dofsResult.Value());
-    fesa::AnalysisState state =
-        fesa::AnalysisState::Create(dofs, {"Step-1", 0U});
+  fesa::DofManager dofs = std::move(dofs_result.Value());
+  fesa::AnalysisState state = fesa::AnalysisState::Create(dofs, {"Step-1", 0U});
 
   for (std::size_t node = 0U; node < kNodeCount; ++node) {
     for (std::size_t component = 0U; component < 6U; ++component) {
@@ -247,33 +225,21 @@ void writeResultsFixture(
   for (std::size_t element = 0U; element < kElementCount; ++element) {
     for (std::size_t endpoint = 0U; endpoint < 2U; ++endpoint) {
       const std::size_t node = element + endpoint;
-            state.EndpointResults().push_back({
-                static_cast<fesa::EntityIndex>(element),
+      state.EndpointResults().push_back(
+          {static_cast<fesa::EntityIndex>(element),
            static_cast<int>(endpoint),
            domain.Nodes()[node].source_id,
            {},
-                values.sectionResultants[element][endpoint]});
+           values.section_resultants[element][endpoint]});
     }
     state.GaussResults().push_back(
         {static_cast<fesa::EntityIndex>(element), 1, {}, {}});
     state.GaussResults().push_back(
         {static_cast<fesa::EntityIndex>(element), 2, {}, {}});
-        state.StressResults().push_back({
-            static_cast<fesa::EntityIndex>(element),
-            1,
-            0U,
-            0.0,
-            0.0,
-            0.0,
-            "fesa-default"});
-        state.StressResults().push_back({
-            static_cast<fesa::EntityIndex>(element),
-            2,
-            0U,
-            0.0,
-            0.0,
-            0.0,
-            "fesa-default"});
+    state.StressResults().push_back({static_cast<fesa::EntityIndex>(element), 1,
+                                     0U, 0.0, 0.0, 0.0, "fesa-default"});
+    state.StressResults().push_back({static_cast<fesa::EntityIndex>(element), 2,
+                                     0U, 0.0, 0.0, 0.0, "fesa-default"});
   }
 
   fesa::Hdf5ResultsWriter writer;
@@ -284,12 +250,11 @@ void writeResultsFixture(
 }
 
 class ContractFixture {
-public:
+ public:
   ContractFixture(std::string label, const ComparisonValues& values) {
     static std::atomic<std::uint64_t> sequence{0U};
-        root_ = binaryRoot() / "reference" / "contract-fixtures" /
-                (std::move(label) + "-" +
-                 std::to_string(sequence.fetch_add(1U)));
+    root_ = BinaryRoot() / "reference" / "contract-fixtures" /
+            (std::move(label) + "-" + std::to_string(sequence.fetch_add(1U)));
     legacy_ = root_ / "cantilever beam";
     std::error_code error;
     std::filesystem::remove_all(root_, error);
@@ -297,16 +262,15 @@ public:
     if (!std::filesystem::create_directories(legacy_, error) || error) {
       throw std::runtime_error{"Unable to create contract fixture directory."};
     }
-        const auto approved = sourceRoot() / "reference" / "cantilever beam";
+    const auto approved = SourceRoot() / "reference" / "cantilever beam";
     for (const char* name :
          {kInputName, kDisplacementName, kReactionName, kSectionName}) {
       std::filesystem::copy_file(
-                approved / name,
-                legacy_ / name,
+          approved / name, legacy_ / name,
           std::filesystem::copy_options::overwrite_existing);
     }
     results_ = root_ / "results.h5";
-        writeResultsFixture(results_, legacy_ / kInputName, values);
+    WriteResultsFixture(results_, legacy_ / kInputName, values);
   }
 
   ContractFixture(const ContractFixture&) = delete;
@@ -317,392 +281,345 @@ public:
     std::filesystem::remove_all(root_, ignored);
   }
 
-    const std::filesystem::path& root() const noexcept { return root_; }
-    const std::filesystem::path& legacy() const noexcept { return legacy_; }
-    const std::filesystem::path& results() const noexcept { return results_; }
+  const std::filesystem::path& Root() const noexcept { return root_; }
+  const std::filesystem::path& Legacy() const noexcept { return legacy_; }
+  const std::filesystem::path& Results() const noexcept { return results_; }
 
-private:
+ private:
   std::filesystem::path root_;
   std::filesystem::path legacy_;
   std::filesystem::path results_;
 };
 
-void expectFailureCode(
-    const fesa::Result<fesa::test::ComparisonReport>& result,
-    const std::string& expectedCode) {
+void ExpectFailureCode(const fesa::Result<fesa::test::ComparisonReport>& result,
+                       const std::string& expected_code) {
   ASSERT_FALSE(result.HasValue());
   ASSERT_FALSE(result.GetStatus().IsOk());
   ASSERT_FALSE(result.GetStatus().Diagnostics().empty());
-    EXPECT_EQ(result.GetStatus().Diagnostics().front().code, expectedCode);
+  EXPECT_EQ(result.GetStatus().Diagnostics().front().code, expected_code);
 }
 
-const fesa::test::RowDecision* findRow(
+const fesa::test::RowDecision* FindRow(
     const fesa::test::ComparisonReport& report,
     const fesa::test::ComparisonQuantity quantity,
-    const std::int64_t sourceNodeLabel,
-    const std::string& component) {
-    const auto found = std::find_if(
-        report.rows.begin(),
-        report.rows.end(),
+    const std::int64_t source_node_label, const std::string& component) {
+  const auto found = std::find_if(report.rows.begin(), report.rows.end(),
                                   [&](const fesa::test::RowDecision& row) {
                                     return row.reference.quantity == quantity &&
-                   row.reference.sourceNodeLabel == sourceNodeLabel &&
+                                           row.reference.source_node_label ==
+                                               source_node_label &&
                                            row.reference.component == component;
                                   });
   return found == report.rows.end() ? nullptr : &*found;
 }
 
-const fesa::test::ComponentMetrics* findMetric(
+const fesa::test::ComponentMetrics* FindMetric(
     const fesa::test::ComparisonReport& report,
     const fesa::test::ComparisonQuantity quantity,
     const std::string& component) {
   const auto found = std::find_if(
-        report.metrics.begin(),
-        report.metrics.end(),
+      report.metrics.begin(), report.metrics.end(),
       [&](const fesa::test::ComponentMetrics& metric) {
         return metric.quantity == quantity && metric.component == component;
       });
   return found == report.metrics.end() ? nullptr : &*found;
 }
 
-void expectExactRowInventory(const fesa::test::ComparisonReport& report) {
+void ExpectExactRowInventory(const fesa::test::ComparisonReport& report) {
   ASSERT_EQ(report.rows.size(), kExpectedRowCount);
-    std::size_t rowIndex = 0U;
-    const auto expectRow = [&](const fesa::test::ComparisonQuantity quantity,
+  std::size_t row_index = 0U;
+  const auto expect_row = [&](const fesa::test::ComparisonQuantity quantity,
                               const std::size_t node,
                               const std::string& component,
                               const std::string& unit,
-                               const std::string& coordinateSystem,
-                               const std::string& datasetPath) {
-        ASSERT_LT(rowIndex, report.rows.size());
-        const auto& row = report.rows[rowIndex++];
+                              const std::string& coordinate_system,
+                              const std::string& dataset_path) {
+    ASSERT_LT(row_index, report.rows.size());
+    const auto& row = report.rows[row_index++];
     for (const auto* side : {&row.fesa, &row.reference}) {
-            EXPECT_EQ(side->modelId, "cantilever-beam-b33");
-            EXPECT_EQ(side->stepName, "Step-1");
-            EXPECT_EQ(side->frameIndex, 0U);
-            EXPECT_EQ(side->instanceName, kInstanceName);
-            EXPECT_EQ(
-                side->sourceNodeLabel,
-                static_cast<std::int64_t>(node + 1U));
+      EXPECT_EQ(side->model_id, "cantilever-beam-b33");
+      EXPECT_EQ(side->step_name, "Step-1");
+      EXPECT_EQ(side->frame_index, 0U);
+      EXPECT_EQ(side->instance_name, kInstanceName);
+      EXPECT_EQ(side->source_node_label, static_cast<std::int64_t>(node + 1U));
       EXPECT_EQ(side->quantity, quantity);
       EXPECT_EQ(side->component, component);
-            EXPECT_EQ(side->unitDimension, unit);
-            EXPECT_EQ(side->coordinateSystem, coordinateSystem);
-            EXPECT_EQ(side->hdf5DatasetPath, datasetPath);
+      EXPECT_EQ(side->unit_dimension, unit);
+      EXPECT_EQ(side->coordinate_system, coordinate_system);
+      EXPECT_EQ(side->hdf5_dataset_path, dataset_path);
     }
   };
 
-    const std::array<std::string, 6> displacementComponents = {
+  const std::array<std::string, 6> displacement_components = {
       "UX", "UY", "UZ", "URX", "URY", "URZ"};
-    const std::array<std::string, 6> displacementUnits = {
+  const std::array<std::string, 6> displacement_units = {
       "length", "length", "length", "radian", "radian", "radian"};
   for (std::size_t node = 0U; node < kNodeCount; ++node) {
-        for (std::size_t component = 0U;
-             component < displacementComponents.size();
+    for (std::size_t component = 0U; component < displacement_components.size();
          ++component) {
-            expectRow(
-                fesa::test::ComparisonQuantity::displacement,
-                node,
-                displacementComponents[component],
-                displacementUnits[component],
-                "global-cartesian",
+      expect_row(fesa::test::ComparisonQuantity::kDisplacement, node,
+                 displacement_components[component],
+                 displacement_units[component], "global-cartesian",
                  "/steps/Step-1/frames/0/nodal/displacement");
     }
   }
 
-    const std::array<std::string, 6> reactionComponents = {
-        "RF1", "RF2", "RF3", "RM1", "RM2", "RM3"};
-    const std::array<std::string, 6> reactionUnits = {
-        "force",
-        "force",
-        "force",
-        "force*length",
-        "force*length",
-        "force*length"};
+  const std::array<std::string, 6> reaction_components = {"RF1", "RF2", "RF3",
+                                                          "RM1", "RM2", "RM3"};
+  const std::array<std::string, 6> reaction_units = {
+      "force",        "force",        "force",
+      "force*length", "force*length", "force*length"};
   for (std::size_t node = 0U; node < kNodeCount; ++node) {
-        for (std::size_t component = 0U;
-             component < reactionComponents.size();
+    for (std::size_t component = 0U; component < reaction_components.size();
          ++component) {
-            expectRow(
-                fesa::test::ComparisonQuantity::reaction,
-                node,
-                reactionComponents[component],
-                reactionUnits[component],
-                "global-cartesian",
-                "/steps/Step-1/frames/0/nodal/reaction");
+      expect_row(fesa::test::ComparisonQuantity::kReaction, node,
+                 reaction_components[component], reaction_units[component],
+                 "global-cartesian", "/steps/Step-1/frames/0/nodal/reaction");
     }
   }
 
-    const std::array<std::string, 4> sectionComponents = {
-        "N", "T", "My", "Mz"};
-    const std::array<std::string, 4> sectionUnits = {
+  const std::array<std::string, 4> section_components = {"N", "T", "My", "Mz"};
+  const std::array<std::string, 4> section_units = {
       "force", "force*length", "force*length", "force*length"};
   for (std::size_t node = 0U; node < kNodeCount; ++node) {
-        for (std::size_t component = 0U;
-             component < sectionComponents.size();
+    for (std::size_t component = 0U; component < section_components.size();
          ++component) {
-            expectRow(
-                fesa::test::ComparisonQuantity::sectionResultant,
-                node,
-                sectionComponents[component],
-                sectionUnits[component],
+      expect_row(fesa::test::ComparisonQuantity::kSectionResultant, node,
+                 section_components[component], section_units[component],
                  "beam-local",
                  "/steps/Step-1/frames/0/element/section_resultant");
     }
   }
-    EXPECT_EQ(rowIndex, report.rows.size());
+  EXPECT_EQ(row_index, report.rows.size());
 }
 
 }  // namespace
 
 TEST(ReferenceComparisonContract,
      PrecheckRejectsMissingSchemaDuplicateAndNonfiniteRows) {
-    auto mismatchedValues = referenceValues();
-    mismatchedValues.displacement[0U][0U] = 1.0;
+  auto mismatched_values = ReferenceValues();
+  mismatched_values.displacement[0U][0U] = 1.0;
 
   {
-        ContractFixture fixture{"missing-file", mismatchedValues};
-        ASSERT_TRUE(std::filesystem::remove(
-            fixture.legacy() / kDisplacementName));
-        expectFailureCode(
-            fesa::test::ReferenceComparison::compare(
-                fixture.results(), fixture.legacy()),
+    ContractFixture fixture{"missing-file", mismatched_values};
+    ASSERT_TRUE(std::filesystem::remove(fixture.Legacy() / kDisplacementName));
+    ExpectFailureCode(fesa::test::ReferenceComparison::Compare(
+                          fixture.Results(), fixture.Legacy()),
                       "needs-reference-artifacts");
   }
   {
-        ContractFixture fixture{"b31", mismatchedValues};
-        auto input = readBytes(fixture.legacy() / kInputName);
-        replaceFirst(input, "type=B33", "type=B31");
-        writeBytes(fixture.legacy() / kInputName, input);
-        expectFailureCode(
-            fesa::test::ReferenceComparison::compare(
-                fixture.results(), fixture.legacy()),
+    ContractFixture fixture{"b31", mismatched_values};
+    auto input = ReadBytes(fixture.Legacy() / kInputName);
+    ReplaceFirst(input, "type=B33", "type=B31");
+    WriteBytes(fixture.Legacy() / kInputName, input);
+    ExpectFailureCode(fesa::test::ReferenceComparison::Compare(
+                          fixture.Results(), fixture.Legacy()),
                       "needs-reference-artifacts");
   }
   {
-        ContractFixture fixture{"header", mismatchedValues};
-        auto csv = readBytes(fixture.legacy() / kDisplacementName);
-        replaceFirst(csv, "U-U1", "U1");
-        writeBytes(fixture.legacy() / kDisplacementName, csv);
-        expectFailureCode(
-            fesa::test::ReferenceComparison::compare(
-                fixture.results(), fixture.legacy()),
+    ContractFixture fixture{"header", mismatched_values};
+    auto csv = ReadBytes(fixture.Legacy() / kDisplacementName);
+    ReplaceFirst(csv, "U-U1", "U1");
+    WriteBytes(fixture.Legacy() / kDisplacementName, csv);
+    ExpectFailureCode(fesa::test::ReferenceComparison::Compare(
+                          fixture.Results(), fixture.Legacy()),
                       "schema-mismatch");
   }
   {
-        ContractFixture fixture{"missing-row", mismatchedValues};
-        auto lines = readLines(fixture.legacy() / kDisplacementName);
+    ContractFixture fixture{"missing-row", mismatched_values};
+    auto lines = ReadLines(fixture.Legacy() / kDisplacementName);
     ASSERT_EQ(lines.size(), kNodeCount + 1U);
     lines.pop_back();
-        writeLines(fixture.legacy() / kDisplacementName, lines);
-        expectFailureCode(
-            fesa::test::ReferenceComparison::compare(
-                fixture.results(), fixture.legacy()),
+    WriteLines(fixture.Legacy() / kDisplacementName, lines);
+    ExpectFailureCode(fesa::test::ReferenceComparison::Compare(
+                          fixture.Results(), fixture.Legacy()),
                       "schema-mismatch");
   }
   {
-        ContractFixture fixture{"extra-row", mismatchedValues};
-        auto lines = readLines(fixture.legacy() / kDisplacementName);
+    ContractFixture fixture{"extra-row", mismatched_values};
+    auto lines = ReadLines(fixture.Legacy() / kDisplacementName);
     ASSERT_EQ(lines.size(), kNodeCount + 1U);
     std::string extra = lines.back();
-        replaceFirst(extra, ",PART-1_1-1,11,", ",PART-1_1-1,12,");
+    ReplaceFirst(extra, ",PART-1_1-1,11,", ",PART-1_1-1,12,");
     lines.push_back(std::move(extra));
-        writeLines(fixture.legacy() / kDisplacementName, lines);
-        expectFailureCode(
-            fesa::test::ReferenceComparison::compare(
-                fixture.results(), fixture.legacy()),
+    WriteLines(fixture.Legacy() / kDisplacementName, lines);
+    ExpectFailureCode(fesa::test::ReferenceComparison::Compare(
+                          fixture.Results(), fixture.Legacy()),
                       "schema-mismatch");
   }
   {
-        ContractFixture fixture{"duplicate-row", mismatchedValues};
-        auto lines = readLines(fixture.legacy() / kReactionName);
+    ContractFixture fixture{"duplicate-row", mismatched_values};
+    auto lines = ReadLines(fixture.Legacy() / kReactionName);
     ASSERT_EQ(lines.size(), kNodeCount + 1U);
     lines.push_back(lines[1U]);
-        writeLines(fixture.legacy() / kReactionName, lines);
-        expectFailureCode(
-            fesa::test::ReferenceComparison::compare(
-                fixture.results(), fixture.legacy()),
+    WriteLines(fixture.Legacy() / kReactionName, lines);
+    ExpectFailureCode(fesa::test::ReferenceComparison::Compare(
+                          fixture.Results(), fixture.Legacy()),
                       "schema-mismatch");
   }
   {
-        ContractFixture fixture{"nonfinite-row", mismatchedValues};
-        auto csv = readBytes(fixture.legacy() / kReactionName);
-        replaceFirst(csv, "0.000000000E+00", "NaN");
-        writeBytes(fixture.legacy() / kReactionName, csv);
-        expectFailureCode(
-            fesa::test::ReferenceComparison::compare(
-                fixture.results(), fixture.legacy()),
+    ContractFixture fixture{"nonfinite-row", mismatched_values};
+    auto csv = ReadBytes(fixture.Legacy() / kReactionName);
+    ReplaceFirst(csv, "0.000000000E+00", "NaN");
+    WriteBytes(fixture.Legacy() / kReactionName, csv);
+    ExpectFailureCode(fesa::test::ReferenceComparison::Compare(
+                          fixture.Results(), fixture.Legacy()),
                       "schema-mismatch");
   }
   {
-        ContractFixture fixture{"identity", mismatchedValues};
-        auto csv = readBytes(fixture.legacy() / kSectionName);
-        replaceFirst(csv, "PART-1_1-1", "WRONG-INSTANCE");
-        writeBytes(fixture.legacy() / kSectionName, csv);
-        expectFailureCode(
-            fesa::test::ReferenceComparison::compare(
-                fixture.results(), fixture.legacy()),
+    ContractFixture fixture{"identity", mismatched_values};
+    auto csv = ReadBytes(fixture.Legacy() / kSectionName);
+    ReplaceFirst(csv, "PART-1_1-1", "WRONG-INSTANCE");
+    WriteBytes(fixture.Legacy() / kSectionName, csv);
+    ExpectFailureCode(fesa::test::ReferenceComparison::Compare(
+                          fixture.Results(), fixture.Legacy()),
                       "schema-mismatch");
   }
 }
 
 TEST(ReferenceComparisonContract,
      AppliesAbaqusOnlyComponentScaleWithoutClampOrDrop) {
-    auto values = referenceValues();
+  auto values = ReferenceValues();
   values.displacement[1U][0U] = 0.999e-9;
   values.displacement[2U][0U] = 1.001e-9;
-    values.sectionResultants[0U][0U][2U] = 1.0e7 + 9.0;
-    values.sectionResultants[9U][1U][2U] = 0.0;
+  values.section_resultants[0U][0U][2U] = 1.0e7 + 9.0;
+  values.section_resultants[9U][1U][2U] = 0.0;
   ContractFixture fixture{"tolerance", values};
 
-    auto result = fesa::test::ReferenceComparison::compare(
-        fixture.results(), fixture.legacy());
+  auto result = fesa::test::ReferenceComparison::Compare(fixture.Results(),
+                                                         fixture.Legacy());
   ASSERT_TRUE(result.HasValue());
   const auto& report = result.Value();
   EXPECT_FALSE(report.passed);
   EXPECT_EQ(report.rows.size(), kExpectedRowCount);
   EXPECT_EQ(report.metrics.size(), kExpectedMetricCount);
 
-    const auto* zero = findRow(
-        report, fesa::test::ComparisonQuantity::displacement, 1, "UX");
-    const auto* nearZero = findRow(
-        report, fesa::test::ComparisonQuantity::displacement, 2, "UX");
-    const auto* deliberateFailure = findRow(
-        report, fesa::test::ComparisonQuantity::displacement, 3, "UX");
+  const auto* zero =
+      FindRow(report, fesa::test::ComparisonQuantity::kDisplacement, 1, "UX");
+  const auto* near_zero =
+      FindRow(report, fesa::test::ComparisonQuantity::kDisplacement, 2, "UX");
+  const auto* deliberate_failure =
+      FindRow(report, fesa::test::ComparisonQuantity::kDisplacement, 3, "UX");
   ASSERT_NE(zero, nullptr);
-    ASSERT_NE(nearZero, nullptr);
-    ASSERT_NE(deliberateFailure, nullptr);
+  ASSERT_NE(near_zero, nullptr);
+  ASSERT_NE(deliberate_failure, nullptr);
   EXPECT_DOUBLE_EQ(zero->reference.value, 0.0);
   EXPECT_DOUBLE_EQ(zero->fesa.value, 0.0);
   EXPECT_DOUBLE_EQ(zero->tolerance, 1.0e-9);
   EXPECT_TRUE(zero->passed);
-    EXPECT_TRUE(nearZero->passed);
-    EXPECT_FALSE(deliberateFailure->passed);
+  EXPECT_TRUE(near_zero->passed);
+  EXPECT_FALSE(deliberate_failure->passed);
 
-    const auto* myMetric = findMetric(
-        report, fesa::test::ComparisonQuantity::sectionResultant, "My");
-    ASSERT_NE(myMetric, nullptr);
-    EXPECT_DOUBLE_EQ(myMetric->referenceScale, 1.0e7);
-    const auto* scaled = findRow(
-        report, fesa::test::ComparisonQuantity::sectionResultant, 1, "My");
-    const auto* residue = findRow(
-        report, fesa::test::ComparisonQuantity::sectionResultant, 11, "My");
+  const auto* my_metric = FindMetric(
+      report, fesa::test::ComparisonQuantity::kSectionResultant, "My");
+  ASSERT_NE(my_metric, nullptr);
+  EXPECT_DOUBLE_EQ(my_metric->reference_scale, 1.0e7);
+  const auto* scaled = FindRow(
+      report, fesa::test::ComparisonQuantity::kSectionResultant, 1, "My");
+  const auto* residue = FindRow(
+      report, fesa::test::ComparisonQuantity::kSectionResultant, 11, "My");
   ASSERT_NE(scaled, nullptr);
   ASSERT_NE(residue, nullptr);
   EXPECT_DOUBLE_EQ(scaled->tolerance, 10.001);
-    EXPECT_DOUBLE_EQ(scaled->absoluteError, 9.0);
+  EXPECT_DOUBLE_EQ(scaled->absolute_error, 9.0);
   EXPECT_TRUE(scaled->passed);
   EXPECT_DOUBLE_EQ(residue->reference.value, -1.56e-2);
   EXPECT_DOUBLE_EQ(residue->fesa.value, 0.0);
-    EXPECT_DOUBLE_EQ(residue->absoluteError, 1.56e-2);
+  EXPECT_DOUBLE_EQ(residue->absolute_error, 1.56e-2);
   EXPECT_DOUBLE_EQ(residue->tolerance, 10.001);
   EXPECT_TRUE(residue->passed);
 }
 
 TEST(ReferenceComparisonContract,
      ReportsEveryRowAndAggregateMetricDeterministically) {
-    auto values = referenceValues();
+  auto values = ReferenceValues();
   values.displacement[0U][0U] = 0.5e-9;
   values.displacement[1U][0U] = -1.0e-9;
   ContractFixture fixture{"metrics", values};
 
-    auto result = fesa::test::ReferenceComparison::compare(
-        fixture.results(), fixture.legacy());
+  auto result = fesa::test::ReferenceComparison::Compare(fixture.Results(),
+                                                         fixture.Legacy());
   ASSERT_TRUE(result.HasValue());
   const auto& report = result.Value();
   ASSERT_TRUE(report.passed);
-    expectExactRowInventory(report);
+  ExpectExactRowInventory(report);
   ASSERT_EQ(report.metrics.size(), kExpectedMetricCount);
   EXPECT_TRUE(std::all_of(
-        report.rows.begin(),
-        report.rows.end(),
+      report.rows.begin(), report.rows.end(),
       [](const fesa::test::RowDecision& row) { return row.passed; }));
 
-    const auto* metric = findMetric(
-        report, fesa::test::ComparisonQuantity::displacement, "UX");
-    const auto* worst = findRow(
-        report, fesa::test::ComparisonQuantity::displacement, 2, "UX");
+  const auto* metric =
+      FindMetric(report, fesa::test::ComparisonQuantity::kDisplacement, "UX");
+  const auto* worst =
+      FindRow(report, fesa::test::ComparisonQuantity::kDisplacement, 2, "UX");
   ASSERT_NE(metric, nullptr);
   ASSERT_NE(worst, nullptr);
-    EXPECT_DOUBLE_EQ(metric->referenceScale, 0.0);
-    EXPECT_DOUBLE_EQ(metric->maximumAbsoluteError, 1.0e-9);
-    EXPECT_DOUBLE_EQ(metric->maximumNormalizedError, 1.0);
-    EXPECT_NEAR(
-        metric->rmsError,
+  EXPECT_DOUBLE_EQ(metric->reference_scale, 0.0);
+  EXPECT_DOUBLE_EQ(metric->maximum_absolute_error, 1.0e-9);
+  EXPECT_DOUBLE_EQ(metric->maximum_normalized_error, 1.0);
+  EXPECT_NEAR(metric->rms_error,
               std::sqrt(1.25 / static_cast<double>(kNodeCount)) * 1.0e-9,
               1.0e-21);
-    EXPECT_NEAR(metric->normError, std::sqrt(1.25) * 1.0e-9, 1.0e-21);
-    EXPECT_EQ(
-        metric->worstRow,
+  EXPECT_NEAR(metric->norm_error, std::sqrt(1.25) * 1.0e-9, 1.0e-21);
+  EXPECT_EQ(metric->worst_row,
             static_cast<std::size_t>(worst - report.rows.data()));
 
-    EXPECT_FALSE(report.stressComparisonApplicable);
-    EXPECT_NE(report.stressComparisonReason.find("N/A"), std::string::npos);
-    EXPECT_NE(report.stressComparisonReason.find("HDF5"), std::string::npos);
-    EXPECT_DOUBLE_EQ(report.physicsEvidence.freeResidualNorm, 0.0);
-    EXPECT_EQ(
-        report.physicsEvidence.appliedForce,
+  EXPECT_FALSE(report.stress_comparison_applicable);
+  EXPECT_NE(report.stress_comparison_reason.find("N/A"), std::string::npos);
+  EXPECT_NE(report.stress_comparison_reason.find("HDF5"), std::string::npos);
+  EXPECT_DOUBLE_EQ(report.physics_evidence.free_residual_norm, 0.0);
+  EXPECT_EQ(report.physics_evidence.applied_force,
             (std::array<double, 3>{0.0, 0.0, -1.0e6}));
-    EXPECT_EQ(
-        report.physicsEvidence.reactionForce,
+  EXPECT_EQ(report.physics_evidence.reaction_force,
             (std::array<double, 3>{0.0, 0.0, 1.0e6}));
-    EXPECT_EQ(
-        report.physicsEvidence.appliedMomentAboutOrigin,
+  EXPECT_EQ(report.physics_evidence.applied_moment_about_origin,
             (std::array<double, 3>{0.0, 1.0e7, 0.0}));
-    EXPECT_EQ(
-        report.physicsEvidence.reactionMomentAboutOrigin,
+  EXPECT_EQ(report.physics_evidence.reaction_moment_about_origin,
             (std::array<double, 3>{0.0, -1.0e7, 0.0}));
-    EXPECT_TRUE(report.physicsEvidence.endpointConsistencyPassed);
+  EXPECT_TRUE(report.physics_evidence.endpoint_consistency_passed);
 
-    const auto jsonA = fixture.root() / "comparison-a.json";
-    const auto jsonB = fixture.root() / "comparison-b.json";
+  const auto json_a = fixture.Root() / "comparison-a.json";
+  const auto json_b = fixture.Root() / "comparison-b.json";
   ASSERT_TRUE(
-        fesa::test::ReferenceComparison::writeDeterministicJson(report, jsonA)
+      fesa::test::ReferenceComparison::WriteDeterministicJson(report, json_a)
           .IsOk());
   ASSERT_TRUE(
-        fesa::test::ReferenceComparison::writeDeterministicJson(report, jsonB)
+      fesa::test::ReferenceComparison::WriteDeterministicJson(report, json_b)
           .IsOk());
-    const std::string first = readBytes(jsonA);
-    EXPECT_EQ(first, readBytes(jsonB));
-    for (const char* required : {
-             "\"rows\"",
-             "\"metrics\"",
-             "\"stress_comparison_applicable\":false",
-             "\"stress_comparison_reason\"",
-             "\"physics_evidence\"",
-             "\"free_residual_norm\"",
-             "\"applied_force\"",
-             "\"reaction_force\"",
-             "\"applied_moment_about_origin\"",
-             "\"reaction_moment_about_origin\"",
+  const std::string first = ReadBytes(json_a);
+  EXPECT_EQ(first, ReadBytes(json_b));
+  for (const char* required :
+       {"\"rows\"", "\"metrics\"", "\"stress_comparison_applicable\":false",
+        "\"stress_comparison_reason\"", "\"physics_evidence\"",
+        "\"free_residual_norm\"", "\"applied_force\"", "\"reaction_force\"",
+        "\"applied_moment_about_origin\"", "\"reaction_moment_about_origin\"",
         "\"endpoint_consistency_passed\""}) {
     EXPECT_NE(first.find(required), std::string::npos) << required;
   }
 }
 
-TEST(ReferenceComparisonContract,
-     NormalizesEligibleStationsWithoutAveraging) {
-    auto values = referenceValues();
-    values.sectionResultants[0U][0U] = {2.0e-4, 3.0e-4, 1.0e7, 4.0e-4};
-    values.sectionResultants[0U][1U][2U] = 9.0e6 - 5.0;
-    values.sectionResultants[1U][0U][2U] = 9.0e6 + 5.0;
+TEST(ReferenceComparisonContract, NormalizesEligibleStationsWithoutAveraging) {
+  auto values = ReferenceValues();
+  values.section_resultants[0U][0U] = {2.0e-4, 3.0e-4, 1.0e7, 4.0e-4};
+  values.section_resultants[0U][1U][2U] = 9.0e6 - 5.0;
+  values.section_resultants[1U][0U][2U] = 9.0e6 + 5.0;
   ContractFixture fixture{"stations", values};
 
-    auto result = fesa::test::ReferenceComparison::compare(
-        fixture.results(), fixture.legacy());
+  auto result = fesa::test::ReferenceComparison::Compare(fixture.Results(),
+                                                         fixture.Legacy());
   ASSERT_TRUE(result.HasValue());
   const auto& report = result.Value();
   ASSERT_TRUE(report.passed);
-    EXPECT_TRUE(report.physicsEvidence.endpointConsistencyPassed);
+  EXPECT_TRUE(report.physics_evidence.endpoint_consistency_passed);
 
-    const auto* n = findRow(
-        report, fesa::test::ComparisonQuantity::sectionResultant, 1, "N");
-    const auto* t = findRow(
-        report, fesa::test::ComparisonQuantity::sectionResultant, 1, "T");
-    const auto* my = findRow(
-        report, fesa::test::ComparisonQuantity::sectionResultant, 1, "My");
-    const auto* mz = findRow(
-        report, fesa::test::ComparisonQuantity::sectionResultant, 1, "Mz");
+  const auto* n = FindRow(
+      report, fesa::test::ComparisonQuantity::kSectionResultant, 1, "N");
+  const auto* t = FindRow(
+      report, fesa::test::ComparisonQuantity::kSectionResultant, 1, "T");
+  const auto* my = FindRow(
+      report, fesa::test::ComparisonQuantity::kSectionResultant, 1, "My");
+  const auto* mz = FindRow(
+      report, fesa::test::ComparisonQuantity::kSectionResultant, 1, "Mz");
   ASSERT_NE(n, nullptr);
   ASSERT_NE(t, nullptr);
   ASSERT_NE(my, nullptr);
@@ -712,19 +629,18 @@ TEST(ReferenceComparisonContract,
   EXPECT_DOUBLE_EQ(my->fesa.value, 1.0e7);
   EXPECT_DOUBLE_EQ(mz->fesa.value, 4.0e-4);
 
-    const auto* interior = findRow(
-        report, fesa::test::ComparisonQuantity::sectionResultant, 2, "My");
+  const auto* interior = FindRow(
+      report, fesa::test::ComparisonQuantity::kSectionResultant, 2, "My");
   ASSERT_NE(interior, nullptr);
   EXPECT_DOUBLE_EQ(interior->fesa.value, 9.0e6 - 5.0);
   EXPECT_DOUBLE_EQ(interior->reference.value, 9.0e6);
-    EXPECT_DOUBLE_EQ(interior->absoluteError, 5.0);
+  EXPECT_DOUBLE_EQ(interior->absolute_error, 5.0);
 
-    auto mismatchValues = referenceValues();
-    mismatchValues.sectionResultants[0U][1U][2U] = 9.0e6 - 6.0;
-    mismatchValues.sectionResultants[1U][0U][2U] = 9.0e6 + 6.0;
-    ContractFixture mismatch{"station-mismatch", mismatchValues};
-    expectFailureCode(
-        fesa::test::ReferenceComparison::compare(
-            mismatch.results(), mismatch.legacy()),
+  auto mismatch_values = ReferenceValues();
+  mismatch_values.section_resultants[0U][1U][2U] = 9.0e6 - 6.0;
+  mismatch_values.section_resultants[1U][0U][2U] = 9.0e6 + 6.0;
+  ContractFixture mismatch{"station-mismatch", mismatch_values};
+  ExpectFailureCode(fesa::test::ReferenceComparison::Compare(mismatch.Results(),
+                                                             mismatch.Legacy()),
                     "tolerance-failure");
 }

tests/unit/io/abaqus/input_reader_test.cpp

@@ -1,4 +1,4 @@
-#include "fesa/io/abaqus/input_reader.hpp"
+#include "fesa/io/abaqus/input_reader.h"
 
 #include <gtest/gtest.h>
 
@@ -12,7 +12,7 @@
 namespace {
 
 class TemporaryInputFile {
-public:
+ public:
   TemporaryInputFile(const std::string& stem, const std::string& content)
       : path_{std::filesystem::temp_directory_path() /
               ("fesa-" + stem + ".inp")} {
@@ -28,25 +28,22 @@ public:
     std::filesystem::remove(path_, error);
   }
 
-    const std::filesystem::path& path() const noexcept {
-        return path_;
-    }
+  const std::filesystem::path& Path() const noexcept { return path_; }
 
-private:
+ private:
   std::filesystem::path path_;
 };
 
-std::string readExactBytes(const std::filesystem::path& path) {
+std::string ReadExactBytes(const std::filesystem::path& path) {
   std::ifstream stream{path, std::ios::binary};
   if (!stream) {
     throw std::runtime_error{"Unable to read legacy INP fixture."};
   }
-    return std::string{
-        std::istreambuf_iterator<char>{stream},
+  return std::string{std::istreambuf_iterator<char>{stream},
                      std::istreambuf_iterator<char>{}};
 }
 
-std::filesystem::path repositoryRoot() {
+std::filesystem::path RepositoryRoot() {
   auto path = std::filesystem::path{__FILE__}.parent_path();
   for (int parent = 0; parent < 4; ++parent) {
     path = path.parent_path();
@@ -57,69 +54,62 @@ std::filesystem::path repositoryRoot() {
 }  // namespace
 
 TEST(InpSyntax, RejectsMalformedOrOrphanData) {
-    const auto missingPath =
+  const auto missing_path =
       std::filesystem::temp_directory_path() / "fesa-missing-input.inp";
-    std::error_code removeError;
-    std::filesystem::remove(missingPath, removeError);
+  std::error_code remove_error;
+  std::filesystem::remove(missing_path, remove_error);
 
-    const auto unreadable = fesa::AbaqusInputReader{}.read(missingPath);
+  const auto unreadable = fesa::AbaqusInputReader{}.Read(missing_path);
   ASSERT_FALSE(unreadable.HasValue());
-    EXPECT_EQ(
-        unreadable.GetStatus().Category(),
-        fesa::FailureCategory::kInput);
+  EXPECT_EQ(unreadable.GetStatus().Category(), fesa::FailureCategory::kInput);
   ASSERT_EQ(unreadable.GetStatus().Diagnostics().size(), 1U);
   EXPECT_EQ(unreadable.GetStatus().Diagnostics()[0].code,
             "input-file-unreadable");
 
   const TemporaryInputFile malformed{"malformed-keyword", "*, name=value\n"};
-    const auto malformedResult =
-        fesa::AbaqusInputReader{}.read(malformed.path());
-    ASSERT_FALSE(malformedResult.HasValue());
-    EXPECT_EQ(
-        malformedResult.GetStatus().Category(),
+  const auto malformed_result =
+      fesa::AbaqusInputReader{}.Read(malformed.Path());
+  ASSERT_FALSE(malformed_result.HasValue());
+  EXPECT_EQ(malformed_result.GetStatus().Category(),
             fesa::FailureCategory::kInput);
-    ASSERT_EQ(malformedResult.GetStatus().Diagnostics().size(), 1U);
-    EXPECT_EQ(malformedResult.GetStatus().Diagnostics()[0].code,
+  ASSERT_EQ(malformed_result.GetStatus().Diagnostics().size(), 1U);
+  EXPECT_EQ(malformed_result.GetStatus().Diagnostics()[0].code,
             "malformed-keyword");
-    EXPECT_EQ(malformedResult.GetStatus().Diagnostics()[0].location.line, 1U);
+  EXPECT_EQ(malformed_result.GetStatus().Diagnostics()[0].location.line, 1U);
 
-    const TemporaryInputFile orphan{
-        "orphan-data", "** comment\n\norphan, data\n"};
-    const auto orphanResult = fesa::AbaqusInputReader{}.read(orphan.path());
-    ASSERT_FALSE(orphanResult.HasValue());
-    EXPECT_EQ(
-        orphanResult.GetStatus().Category(),
+  const TemporaryInputFile orphan{"orphan-data",
+                                  "** comment\n\norphan, data\n"};
+  const auto orphan_result = fesa::AbaqusInputReader{}.Read(orphan.Path());
+  ASSERT_FALSE(orphan_result.HasValue());
+  EXPECT_EQ(orphan_result.GetStatus().Category(),
             fesa::FailureCategory::kInput);
-    ASSERT_EQ(orphanResult.GetStatus().Diagnostics().size(), 1U);
-    EXPECT_EQ(orphanResult.GetStatus().Diagnostics()[0].code,
+  ASSERT_EQ(orphan_result.GetStatus().Diagnostics().size(), 1U);
+  EXPECT_EQ(orphan_result.GetStatus().Diagnostics()[0].code,
             "orphan-data-line");
-    EXPECT_EQ(orphanResult.GetStatus().Diagnostics()[0].location.line, 3U);
+  EXPECT_EQ(orphan_result.GetStatus().Diagnostics()[0].location.line, 3U);
 }
 
 TEST(InpSyntax, ReadsLegacyCantileverWithoutMutation) {
-    const auto inputPath =
-        repositoryRoot() / "reference" / "cantilever beam" /
+  const auto input_path = RepositoryRoot() / "reference" / "cantilever beam" /
                           "cantilever beam.inp";
-    const auto bytesBefore = readExactBytes(inputPath);
-    const auto timestampBefore = std::filesystem::last_write_time(inputPath);
+  const auto bytes_before = ReadExactBytes(input_path);
+  const auto timestamp_before = std::filesystem::last_write_time(input_path);
 
-    const auto result = fesa::AbaqusInputReader{}.read(inputPath);
+  const auto result = fesa::AbaqusInputReader{}.Read(input_path);
 
   ASSERT_TRUE(result.HasValue());
-    EXPECT_EQ(result.Value().sourceContentIdentity,
-              "fnv1a64:04543464cc970405");
-    EXPECT_EQ(result.Value().sourcePath,
-              std::filesystem::absolute(inputPath).lexically_normal());
+  EXPECT_EQ(result.Value().source_content_identity, "fnv1a64:04543464cc970405");
+  EXPECT_EQ(result.Value().source_path,
+            std::filesystem::absolute(input_path).lexically_normal());
   ASSERT_EQ(result.Value().blocks.size(), 30U);
-    EXPECT_EQ(result.Value().blocks.front().canonicalName, "HEADING");
+  EXPECT_EQ(result.Value().blocks.front().canonical_name, "HEADING");
   EXPECT_EQ(result.Value().blocks.front().location.line, 1U);
-    EXPECT_EQ(result.Value().blocks.back().canonicalName, "END STEP");
+  EXPECT_EQ(result.Value().blocks.back().canonical_name, "END STEP");
 
-    const auto element = std::find_if(
-        result.Value().blocks.begin(),
-        result.Value().blocks.end(),
+  const auto element =
+      std::find_if(result.Value().blocks.begin(), result.Value().blocks.end(),
                    [](const fesa::KeywordBlock& block) {
-            return block.canonicalName == "ELEMENT";
+                     return block.canonical_name == "ELEMENT";
                    });
   ASSERT_NE(element, result.Value().blocks.end());
   ASSERT_EQ(element->parameters.size(), 1U);
@@ -128,6 +118,6 @@ TEST(InpSyntax, ReadsLegacyCantileverWithoutMutation) {
   EXPECT_EQ(*element->parameters[0].value, "B33");
   EXPECT_EQ(element->data.size(), 10U);
 
-    EXPECT_EQ(readExactBytes(inputPath), bytesBefore);
-    EXPECT_EQ(std::filesystem::last_write_time(inputPath), timestampBefore);
+  EXPECT_EQ(ReadExactBytes(input_path), bytes_before);
+  EXPECT_EQ(std::filesystem::last_write_time(input_path), timestamp_before);
 }

tests/unit/io/abaqus/input_syntax_test.cpp

@@ -1,5 +1,3 @@
-#include "fesa/io/abaqus/input_reader.hpp"
-
 #include <gtest/gtest.h>
 
 #include <filesystem>
@@ -8,10 +6,12 @@
 #include <string>
 #include <vector>
 
+#include "fesa/io/abaqus/input_reader.h"
+
 namespace {
 
 class TemporaryInputFile {
-public:
+ public:
   TemporaryInputFile(const std::string& stem, const std::string& content)
       : path_{std::filesystem::temp_directory_path() /
               ("fesa-" + stem + ".inp")} {
@@ -27,29 +27,26 @@ public:
     std::filesystem::remove(path_, error);
   }
 
-    const std::filesystem::path& path() const noexcept {
-        return path_;
-    }
+  const std::filesystem::path& Path() const noexcept { return path_; }
 
-private:
+ private:
   std::filesystem::path path_;
 };
 
 }  // namespace
 
 TEST(InpSyntax, CanonicalizesKeywordAndParameterNamesOnly) {
-    const std::string originalLine =
+  const std::string original_line =
       "  *eLeMeNt, TyPe= b33 , generate, ELSET=Beam_Set  ";
-    const TemporaryInputFile input{
-        "canonical-names", originalLine + "\n"};
+  const TemporaryInputFile input{"canonical-names", original_line + "\n"};
 
-    const auto result = fesa::AbaqusInputReader{}.read(input.path());
+  const auto result = fesa::AbaqusInputReader{}.Read(input.Path());
 
   ASSERT_TRUE(result.HasValue());
   ASSERT_EQ(result.Value().blocks.size(), 1U);
   const auto& block = result.Value().blocks[0];
-    EXPECT_EQ(block.canonicalName, "ELEMENT");
-    EXPECT_EQ(block.originalLine, originalLine);
+  EXPECT_EQ(block.canonical_name, "ELEMENT");
+  EXPECT_EQ(block.original_line, original_line);
   EXPECT_EQ(block.location.line, 1U);
 
   ASSERT_EQ(block.parameters.size(), 3U);
@@ -64,32 +61,29 @@ TEST(InpSyntax, CanonicalizesKeywordAndParameterNamesOnly) {
 }
 
 TEST(InpSyntax, PreservesDataAndSourceLocations) {
-    const std::string exactBytes =
+  const std::string exact_bytes =
       "** retained only in line accounting\r\n"
       "\r\n"
       "*NoDe\r\n"
       "  0007, Label_A, ,\r\n";
-    const TemporaryInputFile input{"data-and-locations", exactBytes};
+  const TemporaryInputFile input{"data-and-locations", exact_bytes};
 
-    const auto result = fesa::AbaqusInputReader{}.read(input.path());
+  const auto result = fesa::AbaqusInputReader{}.Read(input.Path());
 
   ASSERT_TRUE(result.HasValue());
-    EXPECT_EQ(
-        result.Value().sourcePath,
-        std::filesystem::absolute(input.path()).lexically_normal());
-    EXPECT_EQ(result.Value().sourceContentIdentity,
-              "fnv1a64:c120b6ed2445be46");
+  EXPECT_EQ(result.Value().source_path,
+            std::filesystem::absolute(input.Path()).lexically_normal());
+  EXPECT_EQ(result.Value().source_content_identity, "fnv1a64:c120b6ed2445be46");
   ASSERT_EQ(result.Value().blocks.size(), 1U);
   const auto& block = result.Value().blocks[0];
-    EXPECT_EQ(block.canonicalName, "NODE");
-    EXPECT_EQ(block.originalLine, "*NoDe");
-    EXPECT_EQ(block.location.file, result.Value().sourcePath);
+  EXPECT_EQ(block.canonical_name, "NODE");
+  EXPECT_EQ(block.original_line, "*NoDe");
+  EXPECT_EQ(block.location.file, result.Value().source_path);
   EXPECT_EQ(block.location.line, 3U);
 
   ASSERT_EQ(block.data.size(), 1U);
-    EXPECT_EQ(
-        block.data[0].fields,
+  EXPECT_EQ(block.data[0].fields,
             (std::vector<std::string>{"0007", "Label_A", "", ""}));
-    EXPECT_EQ(block.data[0].location.file, result.Value().sourcePath);
+  EXPECT_EQ(block.data[0].location.file, result.Value().source_path);
   EXPECT_EQ(block.data[0].location.line, 4U);
 }