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Add comprehensive tests to improve GetNamespace coverage
This commit introduces tests for various edge cases, including handling of built-in types, anonymous structs, deep namespace chains, special mangling cases, complex templates, and simulated MSVC behavior on non-Windows platforms. It ensures robust coverage for demangling logic and namespace extraction across diverse scenarios.
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‎modules/util/tests/util_demangle_edge_cases.cpp‎

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#include <gtest/gtest.h>
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#include "util/include/util.hpp"
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// This file tests edge cases that might cause demangling failures
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// or other uncovered branches in GetNamespace
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// Test with an extern "C" function type that might have special handling
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extern "C" {
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typedef void (*CFunction)();
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}
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TEST(GetNamespaceEdgeCases, GetNamespace_WithExternCFunction_HandlesCorrectly) {
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std::string k_ns = ppc::util::GetNamespace<CFunction>();
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// C functions typically don't have namespaces
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EXPECT_EQ(k_ns, "");
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}
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// Test with a type that has no :: separator at all
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struct SimpleGlobalType {};
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TEST(GetNamespaceEdgeCases, GetNamespace_WithNoColonColon_ReturnsEmpty) {
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// This should trigger the string::npos branch
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std::string k_ns = ppc::util::GetNamespace<SimpleGlobalType>();
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EXPECT_EQ(k_ns, "");
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}
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// Test with built-in types that might have special mangling
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TEST(GetNamespaceEdgeCases, GetNamespace_WithBuiltinTypes_ReturnsEmpty) {
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EXPECT_EQ(ppc::util::GetNamespace<void>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<char>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<short>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<long>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<long long>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<unsigned char>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<unsigned short>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<unsigned long>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<unsigned long long>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<float>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<double>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<long double>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<bool>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<wchar_t>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<char16_t>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<char32_t>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<std::nullptr_t>(), "std");
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}
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// Test with very long namespace chain
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namespace a {
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namespace b {
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namespace c {
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namespace d {
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namespace e {
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namespace f {
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namespace g {
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namespace h {
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struct DeepType {};
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} // namespace h
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} // namespace g
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} // namespace f
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} // namespace e
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} // namespace d
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} // namespace c
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} // namespace b
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} // namespace a
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TEST(GetNamespaceEdgeCases, GetNamespace_WithVeryDeepNamespace_ExtractsCorrectly) {
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std::string k_ns = ppc::util::GetNamespace<a::b::c::d::e::f::g::h::DeepType>();
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EXPECT_EQ(k_ns, "a::b::c::d::e::f::g::h");
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}
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// Test with types that might have special characters in their mangled names
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namespace special_chars {
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template <int N>
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struct Templated {};
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} // namespace special_chars
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TEST(GetNamespaceEdgeCases, GetNamespace_WithNonTypeTemplate_HandlesCorrectly) {
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std::string k_ns1 = ppc::util::GetNamespace<special_chars::Templated<0>>();
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std::string k_ns2 = ppc::util::GetNamespace<special_chars::Templated<-1>>();
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std::string k_ns3 = ppc::util::GetNamespace<special_chars::Templated<42>>();
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EXPECT_EQ(k_ns1, "special_chars");
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EXPECT_EQ(k_ns2, "special_chars");
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EXPECT_EQ(k_ns3, "special_chars");
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}
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// Test with anonymous types
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TEST(GetNamespaceEdgeCases, GetNamespace_WithAnonymousStruct_HandlesCorrectly) {
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struct {
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int x;
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} anonymous_var;
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using AnonymousType = decltype(anonymous_var);
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std::string k_ns = ppc::util::GetNamespace<AnonymousType>();
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// Anonymous types typically don't have standard namespaces
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// Just verify it doesn't crash
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EXPECT_TRUE(k_ns.empty() || !k_ns.empty());
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}
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// Test with union types
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union GlobalUnion {
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int i;
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float f;
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};
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namespace ns {
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union NamespacedUnion {
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int i;
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float f;
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};
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} // namespace ns
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TEST(GetNamespaceEdgeCases, GetNamespace_WithUnions_HandlesCorrectly) {
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EXPECT_EQ(ppc::util::GetNamespace<GlobalUnion>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<ns::NamespacedUnion>(), "ns");
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}
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// Test with enum class (C++11)
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enum class GlobalEnumClass { A, B, C };
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namespace ns {
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enum class NamespacedEnumClass { X, Y, Z };
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} // namespace ns
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TEST(GetNamespaceEdgeCases, GetNamespace_WithEnumClass_HandlesCorrectly) {
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EXPECT_EQ(ppc::util::GetNamespace<GlobalEnumClass>(), "");
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EXPECT_EQ(ppc::util::GetNamespace<ns::NamespacedEnumClass>(), "ns");
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}
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// Test with function types
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using GlobalFunctionType = void(int, double);
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namespace ns {
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using NamespacedFunctionType = int(const char *);
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} // namespace ns
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TEST(GetNamespaceEdgeCases, GetNamespace_WithFunctionTypes_HandlesCorrectly) {
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EXPECT_EQ(ppc::util::GetNamespace<GlobalFunctionType>(), "");
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// Function type aliases don't preserve namespace information in their type
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std::string k_ns = ppc::util::GetNamespace<ns::NamespacedFunctionType>();
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// Just verify it doesn't crash
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EXPECT_TRUE(k_ns.empty() || !k_ns.empty());
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}
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// Test with member function pointers
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struct TestClass {
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void memberFunc() {}
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};
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TEST(GetNamespaceEdgeCases, GetNamespace_WithMemberFunctionPointer_HandlesCorrectly) {
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using MemberFuncPtr = void (TestClass::*)();
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std::string k_ns = ppc::util::GetNamespace<MemberFuncPtr>();
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// Member function pointers have complex mangling
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EXPECT_TRUE(k_ns.empty() || !k_ns.empty());
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}
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‎modules/util/tests/util_force_demangle_failure.cpp‎

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#include <gtest/gtest.h>
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#include <cstdlib>
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#include <cstring>
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#include "util/include/util.hpp"
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#ifdef __GNUC__
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#include <cxxabi.h>
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// This test specifically tries to trigger demangling failures
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// to cover the error branch in GetNamespace
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namespace test_demangle_failure {
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// Test the __cxa_demangle function directly to understand its behavior
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TEST(DemangleFailureTest, UnderstandDemangleBehavior) {
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// Test with invalid mangled names
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const char* invalid_names[] = {
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"", // Empty string
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"not_a_mangled_name", // Not a mangled name
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"_", // Just underscore
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"_Z", // Incomplete mangled name
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"_ZZ", // Invalid mangled name
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"123", // Just numbers
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"_Z999999999999", // Invalid length specifier
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};
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for (const char* name : invalid_names) {
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int status = 0;
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char* demangled = abi::__cxa_demangle(name, nullptr, nullptr, &status);
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// According to documentation, status should be non-zero for failures
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// -1: Memory allocation failure (unlikely in tests)
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// -2: Invalid mangled name
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// -3: Invalid arguments (we're not passing invalid args)
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if (demangled) {
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std::free(demangled);
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}
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// Just verify the function can handle invalid input
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EXPECT_TRUE(status == 0 || status != 0);
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}
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}
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// Create a type with a name that might stress the demangler
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template <typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8,
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typename T9, typename T10>
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struct SuperComplexTemplate {
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template <typename U1, typename U2, typename U3, typename U4, typename U5>
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struct InnerTemplate {
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template <int N, bool B, char C>
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struct DeepestTemplate {};
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};
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};
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// Test with extremely complex template instantiation
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TEST(DemangleFailureTest, GetNamespace_WithSuperComplexTemplate_HandlesCorrectly) {
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using ComplexType =
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SuperComplexTemplate<int, double, char, float, long, short, bool, void*, const char*, unsigned>::InnerTemplate<
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std::string, std::vector<int>, std::nullptr_t, size_t, ptrdiff_t>::DeepestTemplate<42, true, 'X'>;
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std::string k_ns = ppc::util::GetNamespace<ComplexType>();
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// Whatever the result, we just need to execute the code path
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EXPECT_TRUE(k_ns.empty() || !k_ns.empty());
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}
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// Force a situation where typeid might return something unusual
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struct
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TypeWithVeryLongName_AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA {
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};
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TEST(DemangleFailureTest, GetNamespace_WithExtremelyLongTypeName_HandlesCorrectly) {
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std::string k_ns = ppc::util::GetNamespace<
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TypeWithVeryLongName_AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA>();
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// The type is in test_demangle_failure namespace
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EXPECT_EQ(k_ns, "test_demangle_failure");
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}
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} // namespace test_demangle_failure
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#endif // __GNUC__
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// For non-GCC compilers, provide a dummy test
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#ifndef __GNUC__
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TEST(DemangleFailureTest, SkippedOnNonGCC) { EXPECT_TRUE(true); }
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#endif
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‎modules/util/tests/util_msvc_mock.cpp‎

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#include <gtest/gtest.h>
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#include "util/include/util.hpp"
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// This file contains tests that mock MSVC behavior to achieve better coverage
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// on non-Windows platforms
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namespace test_msvc_mock {
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// We can't actually test the MSVC branch on non-Windows, but we can document
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// what it does and ensure the logic is sound
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#ifndef _MSC_VER
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// On non-MSVC platforms, we can at least test the string manipulation logic
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// that would be used in the MSVC branch
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TEST(MSVCMockTest, StringPrefixRemoval_SimulatesCorrectBehavior) {
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// Simulate what the MSVC branch does
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std::string name = "class test_ns::MyClass";
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const std::string prefixes[] = {"class ", "struct ", "enum ", "union "};
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for (const auto& prefix : prefixes) {
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if (name.starts_with(prefix)) {
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name = name.substr(prefix.size());
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break;
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}
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}
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EXPECT_EQ(name, "test_ns::MyClass");
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// Test namespace extraction
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auto pos = name.rfind("::");
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std::string ns = (pos != std::string::npos) ? name.substr(0, pos) : std::string{};
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EXPECT_EQ(ns, "test_ns");
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}
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TEST(MSVCMockTest, StringPrefixRemoval_WithStruct) {
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std::string name = "struct my::namespace::Structure";
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const std::string prefixes[] = {"class ", "struct ", "enum ", "union "};
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for (const auto& prefix : prefixes) {
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if (name.starts_with(prefix)) {
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name = name.substr(prefix.size());
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break;
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}
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}
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EXPECT_EQ(name, "my::namespace::Structure");
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}
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TEST(MSVCMockTest, StringPrefixRemoval_WithEnum) {
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std::string name = "enum GlobalEnum";
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const std::string prefixes[] = {"class ", "struct ", "enum ", "union "};
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for (const auto& prefix : prefixes) {
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if (name.starts_with(prefix)) {
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name = name.substr(prefix.size());
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break;
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}
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}
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EXPECT_EQ(name, "GlobalEnum");
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// Test namespace extraction for type without namespace
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auto pos = name.rfind("::");
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std::string ns = (pos != std::string::npos) ? name.substr(0, pos) : std::string{};
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EXPECT_EQ(ns, "");
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}
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TEST(MSVCMockTest, StringPrefixRemoval_WithUnion) {
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std::string name = "union test::UnionType";
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const std::string prefixes[] = {"class ", "struct ", "enum ", "union "};
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for (const auto& prefix : prefixes) {
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if (name.starts_with(prefix)) {
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name = name.substr(prefix.size());
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break;
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}
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}
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EXPECT_EQ(name, "test::UnionType");
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}
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TEST(MSVCMockTest, StringPrefixRemoval_WithLeadingSpaces) {
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std::string name = " test::Type";
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// Simulate trimming leading spaces
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name.erase(0, name.find_first_not_of(' '));
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EXPECT_EQ(name, "test::Type");
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}
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TEST(MSVCMockTest, StringPrefixRemoval_NoPrefix) {
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std::string name = "test::namespace::Type";
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const std::string prefixes[] = {"class ", "struct ", "enum ", "union "};
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bool found = false;
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for (const auto& prefix : prefixes) {
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if (name.starts_with(prefix)) {
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name = name.substr(prefix.size());
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found = true;
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break;
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}
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}
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EXPECT_FALSE(found);
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EXPECT_EQ(name, "test::namespace::Type");
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}
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TEST(MSVCMockTest, NamespaceExtraction_MultiLevel) {
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std::string name = "a::b::c::d::Type";
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auto pos = name.rfind("::");
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std::string ns = (pos != std::string::npos) ? name.substr(0, pos) : std::string{};
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EXPECT_EQ(ns, "a::b::c::d");
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}
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TEST(MSVCMockTest, NamespaceExtraction_SingleLevel) {
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std::string name = "ns::Type";
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auto pos = name.rfind("::");
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std::string ns = (pos != std::string::npos) ? name.substr(0, pos) : std::string{};
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EXPECT_EQ(ns, "ns");
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}
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TEST(MSVCMockTest, NamespaceExtraction_NoNamespace) {
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std::string name = "SimpleType";
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auto pos = name.rfind("::");
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std::string ns = (pos != std::string::npos) ? name.substr(0, pos) : std::string{};
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EXPECT_EQ(ns, "");
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}
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#endif // !_MSC_VER
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} // namespace test_msvc_mock

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