| //===---- NamespaceAliaserTest.cpp - clang-tidy |
| //----------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "../clang-tidy/utils/NamespaceAliaser.h" |
| |
| #include "ClangTidyTest.h" |
| #include "clang/ASTMatchers/ASTMatchFinder.h" |
| #include "clang/ASTMatchers/ASTMatchers.h" |
| #include "gtest/gtest.h" |
| |
| namespace clang { |
| namespace tidy { |
| namespace utils { |
| // This checker is for testing only. It can only run on one test case |
| // (e.g. with one SourceManager). |
| class InsertAliasCheck : public ClangTidyCheck { |
| public: |
| InsertAliasCheck(StringRef Name, ClangTidyContext *Context) |
| :ClangTidyCheck(Name, Context) {} |
| void registerMatchers(ast_matchers::MatchFinder *Finder) override { |
| Finder->addMatcher(ast_matchers::callExpr().bind("foo"), this); |
| } |
| void check(const ast_matchers::MatchFinder::MatchResult &Result) override { |
| if (!Aliaser) |
| Aliaser.reset(new NamespaceAliaser(*Result.SourceManager)); |
| |
| const auto *Call = Result.Nodes.getNodeAs<CallExpr>("foo"); |
| assert(Call != nullptr && "Did not find node \"foo\""); |
| auto Hint = Aliaser->createAlias(*Result.Context, *Call, "::foo::bar", |
| {"b", "some_alias"}); |
| if (Hint.hasValue()) |
| diag(Call->getBeginLoc(), "Fix for testing") << Hint.getValue(); |
| |
| diag(Call->getBeginLoc(), "insert call") << FixItHint::CreateInsertion( |
| Call->getBeginLoc(), |
| Aliaser->getNamespaceName(*Result.Context, *Call, "::foo::bar") + "::"); |
| } |
| |
| private: |
| std::unique_ptr<NamespaceAliaser> Aliaser; |
| }; |
| |
| template <typename Check> |
| std::string runChecker(StringRef Code, unsigned ExpectedWarningCount) { |
| std::map<StringRef, StringRef> AdditionalFileContents = {{"foo.h", |
| "namespace foo {\n" |
| "namespace bar {\n" |
| "}\n" |
| "void func() { }\n" |
| "}"}}; |
| std::vector<ClangTidyError> errors; |
| |
| std::string result = |
| test::runCheckOnCode<Check>(Code, &errors, "foo.cc", None, |
| ClangTidyOptions(), AdditionalFileContents); |
| |
| EXPECT_EQ(ExpectedWarningCount, errors.size()); |
| return result; |
| } |
| |
| TEST(NamespaceAliaserTest, AddNewAlias) { |
| EXPECT_EQ("#include \"foo.h\"\n" |
| "void f() {\n" |
| "namespace b = ::foo::bar;" |
| " b::f(); }", |
| runChecker<InsertAliasCheck>("#include \"foo.h\"\n" |
| "void f() { f(); }", |
| 2)); |
| } |
| |
| TEST(NamespaceAliaserTest, ReuseAlias) { |
| EXPECT_EQ( |
| "#include \"foo.h\"\n" |
| "void f() { namespace x = foo::bar; x::f(); }", |
| runChecker<InsertAliasCheck>("#include \"foo.h\"\n" |
| "void f() { namespace x = foo::bar; f(); }", |
| 1)); |
| } |
| |
| TEST(NamespaceAliaserTest, AddsOnlyOneAlias) { |
| EXPECT_EQ("#include \"foo.h\"\n" |
| "void f() {\n" |
| "namespace b = ::foo::bar;" |
| " b::f(); b::f(); }", |
| runChecker<InsertAliasCheck>("#include \"foo.h\"\n" |
| "void f() { f(); f(); }", |
| 3)); |
| } |
| |
| TEST(NamespaceAliaserTest, LocalConflict) { |
| EXPECT_EQ("#include \"foo.h\"\n" |
| "void f() {\n" |
| "namespace some_alias = ::foo::bar;" |
| " namespace b = foo; some_alias::f(); }", |
| runChecker<InsertAliasCheck>("#include \"foo.h\"\n" |
| "void f() { namespace b = foo; f(); }", |
| 2)); |
| } |
| |
| TEST(NamespaceAliaserTest, GlobalConflict) { |
| EXPECT_EQ("#include \"foo.h\"\n" |
| "namespace b = foo;\n" |
| "void f() {\n" |
| "namespace some_alias = ::foo::bar;" |
| " some_alias::f(); }", |
| runChecker<InsertAliasCheck>("#include \"foo.h\"\n" |
| "namespace b = foo;\n" |
| "void f() { f(); }", |
| 2)); |
| } |
| |
| } // namespace utils |
| } // namespace tidy |
| } // namespace clang |