forked from OSchip/llvm-project
121 lines
4.5 KiB
C++
121 lines
4.5 KiB
C++
//===---- 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
|