2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
121 lines
4.5 KiB
C++
121 lines
4.5 KiB
C++
//===---- NamespaceAliaserTest.cpp - clang-tidy
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//----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "../clang-tidy/utils/NamespaceAliaser.h"
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#include "ClangTidyTest.h"
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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#include "clang/ASTMatchers/ASTMatchers.h"
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#include "gtest/gtest.h"
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namespace clang {
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namespace tidy {
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namespace utils {
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// This checker is for testing only. It can only run on one test case
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// (e.g. with one SourceManager).
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class InsertAliasCheck : public ClangTidyCheck {
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public:
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InsertAliasCheck(StringRef Name, ClangTidyContext *Context)
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:ClangTidyCheck(Name, Context) {}
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void registerMatchers(ast_matchers::MatchFinder *Finder) override {
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Finder->addMatcher(ast_matchers::callExpr().bind("foo"), this);
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}
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void check(const ast_matchers::MatchFinder::MatchResult &Result) override {
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if (!Aliaser)
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Aliaser.reset(new NamespaceAliaser(*Result.SourceManager));
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const auto *Call = Result.Nodes.getNodeAs<CallExpr>("foo");
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assert(Call != nullptr && "Did not find node \"foo\"");
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auto Hint = Aliaser->createAlias(*Result.Context, *Call, "::foo::bar",
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{"b", "some_alias"});
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if (Hint.hasValue())
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diag(Call->getBeginLoc(), "Fix for testing") << Hint.getValue();
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diag(Call->getBeginLoc(), "insert call") << FixItHint::CreateInsertion(
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Call->getBeginLoc(),
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Aliaser->getNamespaceName(*Result.Context, *Call, "::foo::bar") + "::");
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}
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private:
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std::unique_ptr<NamespaceAliaser> Aliaser;
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};
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template <typename Check>
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std::string runChecker(StringRef Code, unsigned ExpectedWarningCount) {
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std::map<StringRef, StringRef> AdditionalFileContents = {{"foo.h",
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"namespace foo {\n"
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"namespace bar {\n"
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"}\n"
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"void func() { }\n"
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"}"}};
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std::vector<ClangTidyError> errors;
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std::string result =
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test::runCheckOnCode<Check>(Code, &errors, "foo.cc", None,
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ClangTidyOptions(), AdditionalFileContents);
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EXPECT_EQ(ExpectedWarningCount, errors.size());
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return result;
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}
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TEST(NamespaceAliaserTest, AddNewAlias) {
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EXPECT_EQ("#include \"foo.h\"\n"
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"void f() {\n"
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"namespace b = ::foo::bar;"
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" b::f(); }",
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runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
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"void f() { f(); }",
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2));
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}
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TEST(NamespaceAliaserTest, ReuseAlias) {
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EXPECT_EQ(
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"#include \"foo.h\"\n"
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"void f() { namespace x = foo::bar; x::f(); }",
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runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
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"void f() { namespace x = foo::bar; f(); }",
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1));
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}
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TEST(NamespaceAliaserTest, AddsOnlyOneAlias) {
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EXPECT_EQ("#include \"foo.h\"\n"
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"void f() {\n"
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"namespace b = ::foo::bar;"
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" b::f(); b::f(); }",
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runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
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"void f() { f(); f(); }",
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3));
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}
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TEST(NamespaceAliaserTest, LocalConflict) {
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EXPECT_EQ("#include \"foo.h\"\n"
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"void f() {\n"
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"namespace some_alias = ::foo::bar;"
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" namespace b = foo; some_alias::f(); }",
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runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
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"void f() { namespace b = foo; f(); }",
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2));
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}
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TEST(NamespaceAliaserTest, GlobalConflict) {
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EXPECT_EQ("#include \"foo.h\"\n"
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"namespace b = foo;\n"
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"void f() {\n"
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"namespace some_alias = ::foo::bar;"
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" some_alias::f(); }",
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runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
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"namespace b = foo;\n"
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"void f() { f(); }",
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2));
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}
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} // namespace utils
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} // namespace tidy
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} // namespace clang
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