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Add a unit test for ClangASTContext template arguments handling 

I am planning to make changes to this piece of code, so I wrote this
test to add more coverage to it first.

llvm-svn: 317792
This commit is contained in:
Pavel Labath 2017-11-09 15:06:31 +00:00
parent 8c345c5aa9
commit 0ccb256dae
1 changed files with 45 additions and 0 deletions
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45
lldb/unittests/Symbol/TestClangASTContext.cpp
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@ -376,3 +376,48 @@ TEST_F(TestClangASTContext, TestRecordHasFields) {
EXPECT_TRUE(
ClangASTContext::RecordHasFields(empty_derived_non_empty_vbase_decl));
}
TEST_F(TestClangASTContext, TemplateArguments) {
ClangASTContext::TemplateParameterInfos infos;
infos.names.push_back("T");
infos.args.push_back(TemplateArgument(m_ast->getASTContext()->IntTy));
infos.names.push_back("I");
infos.args.push_back(TemplateArgument(*m_ast->getASTContext(),
llvm::APSInt(47),
m_ast->getASTContext()->IntTy));
// template<typename T, int I> struct foo;
ClassTemplateDecl *decl = m_ast->CreateClassTemplateDecl(
m_ast->GetTranslationUnitDecl(), eAccessPublic, "foo", TTK_Struct, infos);
ASSERT_NE(decl, nullptr);
// foo<int, 47>
ClassTemplateSpecializationDecl *spec_decl =
m_ast->CreateClassTemplateSpecializationDecl(
m_ast->GetTranslationUnitDecl(), decl, TTK_Struct, infos);
ASSERT_NE(spec_decl, nullptr);
CompilerType type = m_ast->CreateClassTemplateSpecializationType(spec_decl);
ASSERT_TRUE(type);
m_ast->StartTagDeclarationDefinition(type);
m_ast->CompleteTagDeclarationDefinition(type);
// typedef foo<int, 47> foo_def;
CompilerType typedef_type = m_ast->CreateTypedefType(
type, "foo_def",
CompilerDeclContext(m_ast.get(), m_ast->GetTranslationUnitDecl()));
CompilerType int_type(m_ast->getASTContext(), m_ast->getASTContext()->IntTy);
for(CompilerType t: { type, typedef_type }) {
SCOPED_TRACE(t.GetTypeName().AsCString());
TemplateArgumentKind kind;
CompilerType arg =
m_ast->GetTemplateArgument(t.GetOpaqueQualType(), 0, kind);
EXPECT_EQ(kind, eTemplateArgumentKindType);
EXPECT_EQ(arg, int_type);
arg = m_ast->GetTemplateArgument(t.GetOpaqueQualType(), 1, kind);
EXPECT_EQ(kind, eTemplateArgumentKindIntegral);
EXPECT_EQ(arg, int_type);
}
}