feat(linear-static-3d-euler-beam): step 7 - cmake-test-foundation

tests/unit/build_info_test.cpp

@@ -0,0 +1,27 @@
+#include "fesa/build_info.hpp"
+
+#include <gtest/gtest.h>
+
+#include <regex>
+#include <string>
+#include <string_view>
+#include <type_traits>
+
+TEST(BuildInfo, VersionIsStableAndNonEmpty) {
+    const std::string_view first = fesa::solverVersion();
+    const std::string_view second = fesa::solverVersion();
+
+    EXPECT_FALSE(first.empty());
+    EXPECT_EQ(first, second);
+    EXPECT_TRUE(std::regex_match(
+        std::string(first), std::regex{R"(^[0-9]+\.[0-9]+\.[0-9]+$)"}));
+}
+
+TEST(BuildInfo, PublicHeaderHasNoBackendDependency) {
+    static_assert(
+        std::is_same_v<decltype(fesa::solverVersion()), std::string_view>,
+        "The public BuildInfo API must use only a standard-library value type.");
+    static_assert(noexcept(fesa::solverVersion()));
+
+    SUCCEED();
+}