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[ASTImporter][ASTImporterSpecificLookup] Add test for different operators 

Summary:
This is to check that operators are handled properly in
`ASTImporterSpecificLookup`.  Note, this lookup table is not used in LLDB, only
in CTU.

Reviewers: a_sidorin, shafik, a.sidorin

Subscribers: rnkovacs, dkrupp, Szelethus, gamesh411, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D57905

llvm-svn: 353505
This commit is contained in:
Gabor Marton 2019-02-08 09:19:34 +00:00
parent fc638d64e8
commit a9cab318e7
1 changed files with 60 additions and 0 deletions
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60
clang/unittests/AST/ASTImporterTest.cpp
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@ -4812,6 +4812,66 @@ TEST_P(ASTImporterLookupTableTest, LookupFindsOverloadedNames) {
EXPECT_EQ(Res.count(F2), 1u);
}
TEST_P(ASTImporterLookupTableTest,
DifferentOperatorsShouldHaveDifferentResultSet) {
TranslationUnitDecl *ToTU = getToTuDecl(
R"(
struct X{};
void operator+(X, X);
void operator-(X, X);
)",
Lang_CXX);
ASTImporterLookupTable LT(*ToTU);
auto *FPlus = FirstDeclMatcher<FunctionDecl>().match(
ToTU, functionDecl(hasOverloadedOperatorName("+")));
auto *FMinus = FirstDeclMatcher<FunctionDecl>().match(
ToTU, functionDecl(hasOverloadedOperatorName("-")));
DeclarationName NamePlus = FPlus->getDeclName();
auto ResPlus = LT.lookup(ToTU, NamePlus);
EXPECT_EQ(ResPlus.size(), 1u);
EXPECT_EQ(ResPlus.count(FPlus), 1u);
EXPECT_EQ(ResPlus.count(FMinus), 0u);
DeclarationName NameMinus = FMinus->getDeclName();
auto ResMinus = LT.lookup(ToTU, NameMinus);
EXPECT_EQ(ResMinus.size(), 1u);
EXPECT_EQ(ResMinus.count(FMinus), 1u);
EXPECT_EQ(ResMinus.count(FPlus), 0u);
EXPECT_NE(*ResMinus.begin(), *ResPlus.begin());
}
TEST_P(ASTImporterLookupTableTest, LookupDeclNamesFromDifferentTUs) {
TranslationUnitDecl *ToTU = getToTuDecl(
R"(
struct X {};
void operator+(X, X);
)",
Lang_CXX);
auto *ToPlus = FirstDeclMatcher<FunctionDecl>().match(
ToTU, functionDecl(hasOverloadedOperatorName("+")));
Decl *FromTU = getTuDecl(
R"(
struct X {};
void operator+(X, X);
)",
Lang_CXX);
auto *FromPlus = FirstDeclMatcher<FunctionDecl>().match(
FromTU, functionDecl(hasOverloadedOperatorName("+")));
// FromPlus have a different TU, thus its DeclarationName is different too.
ASSERT_NE(ToPlus->getDeclName(), FromPlus->getDeclName());
ASTImporterLookupTable LT(*ToTU);
auto Res = LT.lookup(ToTU, ToPlus->getDeclName());
ASSERT_EQ(Res.size(), 1u);
EXPECT_EQ(*Res.begin(), ToPlus);
// FromPlus have a different TU, thus its DeclarationName is different too.
Res = LT.lookup(ToTU, FromPlus->getDeclName());
ASSERT_EQ(Res.size(), 0u);
}
static const RecordDecl * getRecordDeclOfFriend(FriendDecl *FD) {
QualType Ty = FD->getFriendType()->getType();
QualType NamedTy = cast<ElaboratedType>(Ty)->getNamedType();