feat: add eigen2 frequency pipeline and fail-closed validation
Implement MITC4 mass, constrained whitening, MKL FEAST, modal HDF5, and deterministic Value comparison. MSVC Debug builds; 394 of 395 tests pass. Original-model all-c residual and the documented S3 static contract conflict remain unresolved; this is an implementation checkpoint, not feature acceptance.
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KOKO\Mimi
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#include <gtest/gtest.h>
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#include <algorithm>
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#include <filesystem>
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#include <fstream>
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#include <stdexcept>
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#include <string>
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#include "fesa/io/abaqus/domain_mapper.h"
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#include "fesa/io/abaqus/input_reader.h"
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namespace {
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class TemporaryInputFile {
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public:
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TemporaryInputFile(const std::string& stem, const std::string& content)
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: path_{std::filesystem::temp_directory_path() /
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("fesa-eigen-domain-" + stem + ".inp")} {
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std::ofstream stream{path_, std::ios::binary | std::ios::trunc};
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stream.write(content.data(), static_cast<std::streamsize>(content.size()));
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if (!stream) {
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throw std::runtime_error{"Unable to create eigen domain fixture."};
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}
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}
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~TemporaryInputFile() {
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std::error_code error;
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std::filesystem::remove(path_, error);
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}
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const std::filesystem::path& Path() const noexcept { return path_; }
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private:
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std::filesystem::path path_;
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};
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fesa::Result<fesa::Domain> MapText(const std::string& stem,
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const std::string& content) {
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const TemporaryInputFile input{stem, content};
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auto parsed = fesa::AbaqusInputReader{}.Read(input.Path());
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if (!parsed.HasValue()) {
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return fesa::Result<fesa::Domain>::Failure(parsed.GetStatus());
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}
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return fesa::AbaqusDomainMapper{}.Map(parsed.Value());
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}
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std::string EigenDeck(const std::string& density = "2700.,",
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const std::string& frequency = "10, , , , ,") {
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return R"inp(*Part, name=ShellPart
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*Node
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1, 0., 0., 0.
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2, 1., 0., 0.
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3, 1., 1., 0.
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4, 0., 1., 0.
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*Element, type=S4R
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1, 1, 2, 3, 4
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*Elset, elset=ShellSet
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1
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*Shell Section, elset=ShellSet, material=Steel
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0.5, 5
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*End Part
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*Assembly, name=Assembly
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*Instance, name=Shell-1, part=ShellPart
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*End Instance
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*Nset, nset=Root, instance=Shell-1
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1
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*End Assembly
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*Material, name=Steel
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*Density
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)inp" + density +
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R"inp(
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*Elastic
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2.1e11, 0.3
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*Boundary
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Root, 1, 6
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*Step, name=Step-2, nlgeom=NO, perturbation
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*Frequency, eigensolver=Lanczos, sim, acoustic coupling=on, normalization=mass
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)inp" + frequency +
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R"inp(
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*Restart, write, frequency=0
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*Output, field
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*Node Output, variable=PRESELECT
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*Output, history
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*Energy Output, variable=ALL
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*End Step
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)inp";
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}
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const fesa::Diagnostic* FindDiagnostic(const fesa::Status& status,
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const std::string& code) {
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for (const auto& diagnostic : status.Diagnostics()) {
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if (diagnostic.code == code) {
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return &diagnostic;
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}
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}
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return nullptr;
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}
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TEST(EigenDomainMapping, PreservesFrequencyDensityAndSourceStepIdentity) {
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auto result = MapText("accepted", EigenDeck());
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ASSERT_TRUE(result.HasValue());
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const fesa::Domain& domain = result.Value();
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ASSERT_EQ(domain.Densities().size(), 1U);
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EXPECT_EQ(domain.Densities()[0].material_index, fesa::EntityIndex{0U});
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EXPECT_DOUBLE_EQ(domain.Densities()[0].rho, 2700.0);
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ASSERT_NE(domain.Frequency(), nullptr);
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EXPECT_EQ(domain.Frequency()->source_step_name_raw, "Step-2");
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EXPECT_EQ(domain.Frequency()->source_step_name_canonical, "STEP-2");
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EXPECT_EQ(domain.Frequency()->requested_mode_count, 10);
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EXPECT_TRUE(domain.Frequency()->perturbation_explicit);
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EXPECT_TRUE(domain.Frequency()->sim_explicit);
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ASSERT_EQ(domain.Steps().Size(), 1U);
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EXPECT_TRUE(domain.Steps()[0U].IsFrequency());
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EXPECT_EQ(domain.Steps()[0U].Frequency(), domain.Frequency());
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EXPECT_EQ(domain.Steps()[0U].Name(), "Step-2");
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ASSERT_EQ(domain.Steps()[0U].BoundaryConditions().size(), 6U);
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EXPECT_TRUE(domain.Steps()[0U].Loads().empty());
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}
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TEST(EigenDomainMapping, RejectsInvalidDensityAndFrequencySlots) {
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auto density = MapText("bad-density", EigenDeck("2700., 1."));
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ASSERT_FALSE(density.HasValue());
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EXPECT_NE(FindDiagnostic(density.GetStatus(), "invalid-density-data"),
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nullptr);
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auto slots = MapText("bad-slots", EigenDeck("2700.,", "10, 0"));
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ASSERT_FALSE(slots.HasValue());
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EXPECT_NE(FindDiagnostic(slots.GetStatus(), "invalid-frequency-data"),
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nullptr);
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}
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TEST(EigenDomainMapping, RejectsMissingActiveDensityAndNonzeroBoundary) {
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std::string missing_deck = EigenDeck();
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const std::string density_block = "*Density\n2700.,\n";
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const std::size_t density_location = missing_deck.find(density_block);
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ASSERT_NE(density_location, std::string::npos);
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missing_deck.erase(density_location, density_block.size());
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auto missing = MapText("missing-density", missing_deck);
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ASSERT_FALSE(missing.HasValue());
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EXPECT_NE(FindDiagnostic(missing.GetStatus(), "missing-material-density"),
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nullptr);
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std::string nonzero = EigenDeck();
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const std::string source = "Root, 1, 6";
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const std::size_t location = nonzero.rfind(source);
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ASSERT_NE(location, std::string::npos);
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nonzero.replace(location, source.size(), "Root, 1, 6, 1.");
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auto boundary = MapText("nonzero-boundary", nonzero);
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ASSERT_FALSE(boundary.HasValue());
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EXPECT_NE(FindDiagnostic(boundary.GetStatus(), "unsupported-eigen-boundary"),
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nullptr);
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}
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TEST(EigenDomainMapping, RejectsMixedProceduresInvalidOutputAndSurface) {
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std::string mixed = EigenDeck();
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mixed.insert(mixed.find("*Restart"), "*Static\n0.1, 1., 0.01, 1.\n");
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auto mixed_result = MapText("mixed-procedures", mixed);
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ASSERT_FALSE(mixed_result.HasValue());
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EXPECT_NE(FindDiagnostic(mixed_result.GetStatus(),
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"unsupported-analysis-procedure"),
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nullptr);
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auto wrong_output = MapText(
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"wrong-output",
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EigenDeck().replace(EigenDeck().find("*Output, field\n*Node Output"),
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std::string{"*Output, field\n*Node Output"}.size(),
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"*Output, history\n*Node Output"));
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ASSERT_FALSE(wrong_output.HasValue());
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EXPECT_NE(FindDiagnostic(wrong_output.GetStatus(), "unsupported-keyword"),
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nullptr);
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std::string surface = EigenDeck();
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surface.insert(surface.find("*Material"),
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"*Surface, name=Face, type=ELEMENT\n");
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auto surface_result = MapText("surface", surface);
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ASSERT_FALSE(surface_result.HasValue());
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}
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TEST(EigenDomainMapping, RejectsInvalidPreprintAndAcceptsStrictNoOp) {
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const std::string preprint =
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"*Preprint, echo=NO, model=NO, history=NO, contact=NO\n";
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auto accepted = MapText("preprint", preprint + EigenDeck());
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ASSERT_TRUE(accepted.HasValue());
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const auto warning = std::find_if(accepted.Value().Warnings().begin(),
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accepted.Value().Warnings().end(),
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[](const fesa::Diagnostic& diagnostic) {
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return diagnostic.keyword == "PREPRINT";
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});
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ASSERT_NE(warning, accepted.Value().Warnings().end());
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EXPECT_EQ(warning->message, "mandatory-eigen-output-unchanged");
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auto rejected =
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MapText("bad-preprint", "*Preprint, echo=YES\n" + EigenDeck());
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ASSERT_FALSE(rejected.HasValue());
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EXPECT_NE(FindDiagnostic(rejected.GetStatus(), "unsupported-keyword"),
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nullptr);
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auto missing_parameters =
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MapText("bare-preprint", "*Preprint\n" + EigenDeck());
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ASSERT_FALSE(missing_parameters.HasValue());
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EXPECT_NE(
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FindDiagnostic(missing_parameters.GetStatus(), "unsupported-keyword"),
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nullptr);
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}
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} // namespace
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