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ClangMoveTests.cpp
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//===-- ClangMoveTests.cpp - clang-move unit tests ------------------------===//
//
// 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 "Move.h"
#include "unittests/Tooling/RewriterTestContext.h"
#include "clang/Format/Format.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Rewrite/Core/Rewriter.h"
#include "clang/Tooling/Refactoring.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/StringRef.h"
#include "gmock/gmock-matchers.h"
#include "gtest/gtest.h"
#include <string>
#include <vector>
namespace clang {
namespace move {
namespace {
const char TestHeader[] = "namespace a {\n"
"class C1; // test\n"
"template <typename T> class C2;\n"
"namespace b {\n"
"// This is a Foo class\n"
"// which is used in\n"
"// test.\n"
"class Foo {\n"
"public:\n"
" void f();\n"
"\n"
"private:\n"
" C1 *c1;\n"
" static int b;\n"
"}; // abc\n"
"\n"
"class Foo2 {\n"
"public:\n"
" int f();\n"
"};\n"
"} // namespace b\n"
"} // namespace a\n";
const char TestCC[] = "#include \"foo.h\"\n"
"namespace a {\n"
"namespace b {\n"
"namespace {\n"
"// comment1.\n"
"void f1() {}\n"
"/// comment2.\n"
"int kConstInt1 = 0;\n"
"} // namespace\n"
"\n"
"/* comment 3*/\n"
"static int kConstInt2 = 1;\n"
"\n"
"/** comment4\n"
" */\n"
"static int help() {\n"
" int a = 0;\n"
" return a;\n"
"}\n"
"\n"
"// comment5\n"
"// comment5\n"
"void Foo::f() {\n"
" f1();\n"
" kConstInt1;\n"
" kConstInt2;\n"
" help();\n"
"}\n"
"\n"
"/////////////\n"
"// comment //\n"
"/////////////\n"
"int Foo::b = 2;\n"
"int Foo2::f() {\n"
" kConstInt1;\n"
" kConstInt2;\n"
" help();\n"
" f1();\n"
" return 1;\n"
"}\n"
"} // namespace b\n"
"} // namespace a\n";
const char ExpectedTestHeader[] = "namespace a {\n"
"class C1; // test\n"
"template <typename T> class C2;\n"
"namespace b {\n"
"\n"
"class Foo2 {\n"
"public:\n"
" int f();\n"
"};\n"
"} // namespace b\n"
"} // namespace a\n";
const char ExpectedTestCC[] = "#include \"foo.h\"\n"
"namespace a {\n"
"namespace b {\n"
"namespace {\n"
"// comment1.\n"
"void f1() {}\n"
"/// comment2.\n"
"int kConstInt1 = 0;\n"
"} // namespace\n"
"\n"
"/* comment 3*/\n"
"static int kConstInt2 = 1;\n"
"\n"
"/** comment4\n"
" */\n"
"static int help() {\n"
" int a = 0;\n"
" return a;\n"
"}\n"
"\n"
"int Foo2::f() {\n"
" kConstInt1;\n"
" kConstInt2;\n"
" help();\n"
" f1();\n"
" return 1;\n"
"}\n"
"} // namespace b\n"
"} // namespace a\n";
const char ExpectedNewHeader[] = "#ifndef NEW_FOO_H\n"
"#define NEW_FOO_H\n"
"\n"
"namespace a {\n"
"class C1; // test\n"
"\n"
"template <typename T> class C2;\n"
"namespace b {\n"
"// This is a Foo class\n"
"// which is used in\n"
"// test.\n"
"class Foo {\n"
"public:\n"
" void f();\n"
"\n"
"private:\n"
" C1 *c1;\n"
" static int b;\n"
"}; // abc\n"
"} // namespace b\n"
"} // namespace a\n"
"\n"
"#endif // NEW_FOO_H\n";
const char ExpectedNewCC[] = "namespace a {\n"
"namespace b {\n"
"namespace {\n"
"// comment1.\n"
"void f1() {}\n"
"\n"
"/// comment2.\n"
"int kConstInt1 = 0;\n"
"} // namespace\n"
"\n"
"/* comment 3*/\n"
"static int kConstInt2 = 1;\n"
"\n"
"/** comment4\n"
" */\n"
"static int help() {\n"
" int a = 0;\n"
" return a;\n"
"}\n"
"\n"
"// comment5\n"
"// comment5\n"
"void Foo::f() {\n"
" f1();\n"
" kConstInt1;\n"
" kConstInt2;\n"
" help();\n"
"}\n"
"\n"
"/////////////\n"
"// comment //\n"
"/////////////\n"
"int Foo::b = 2;\n"
"} // namespace b\n"
"} // namespace a\n";
#ifdef _WIN32
const char WorkingDir[] = "C:\\test";
#else
const char WorkingDir[] = "/test";
#endif
const char TestHeaderName[] = "foo.h";
const char TestCCName[] = "foo.cc";
std::map<std::string, std::string>
runClangMoveOnCode(const move::MoveDefinitionSpec &Spec,
const char *const Header = TestHeader,
const char *const CC = TestCC,
DeclarationReporter *const Reporter = nullptr) {
clang::RewriterTestContext Context;
llvm::SmallString<16> Dir(WorkingDir);
llvm::sys::path::native(Dir);
Context.InMemoryFileSystem->setCurrentWorkingDirectory(Dir);
std::map<llvm::StringRef, clang::FileID> FileToFileID;
auto CreateFiles = [&Context, &FileToFileID](llvm::StringRef Name,
llvm::StringRef Code) {
if (!Name.empty()) {
FileToFileID[Name] = Context.createInMemoryFile(Name, Code);
}
};
CreateFiles(Spec.NewCC, "");
CreateFiles(Spec.NewHeader, "");
CreateFiles(TestHeaderName, Header);
CreateFiles(TestCCName, CC);
std::map<std::string, tooling::Replacements> FileToReplacements;
ClangMoveContext MoveContext = {Spec, FileToReplacements, Dir.c_str(), "LLVM",
Reporter != nullptr};
auto Factory = std::make_unique<clang::move::ClangMoveActionFactory>(
&MoveContext, Reporter);
tooling::runToolOnCodeWithArgs(
Factory->create(), CC, Context.InMemoryFileSystem,
{"-std=c++11", "-fparse-all-comments", "-I."}, TestCCName, "clang-move",
std::make_shared<PCHContainerOperations>());
formatAndApplyAllReplacements(FileToReplacements, Context.Rewrite, "llvm");
// The Key is file name, value is the new code after moving the class.
std::map<std::string, std::string> Results;
for (const auto &It : FileToReplacements) {
// The path may come out as "./foo.h", normalize to "foo.h".
SmallString<32> FilePath (It.first);
llvm::sys::path::remove_dots(FilePath);
Results[FilePath.str().str()] = Context.getRewrittenText(FileToFileID[FilePath]);
}
return Results;
}
TEST(ClangMove, MoveHeaderAndCC) {
move::MoveDefinitionSpec Spec;
Spec.Names = {std::string("a::b::Foo")};
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
std::string ExpectedHeader = "#include \"" + Spec.NewHeader + "\"\n\n";
auto Results = runClangMoveOnCode(Spec);
EXPECT_EQ(ExpectedTestHeader, Results[Spec.OldHeader]);
EXPECT_EQ(ExpectedTestCC, Results[Spec.OldCC]);
EXPECT_EQ(ExpectedNewHeader, Results[Spec.NewHeader]);
EXPECT_EQ(ExpectedHeader + ExpectedNewCC, Results[Spec.NewCC]);
}
TEST(ClangMove, MoveHeaderOnly) {
move::MoveDefinitionSpec Spec;
Spec.Names = {std::string("a::b::Foo")};
Spec.OldHeader = "foo.h";
Spec.NewHeader = "new_foo.h";
auto Results = runClangMoveOnCode(Spec);
EXPECT_EQ(2u, Results.size());
EXPECT_EQ(ExpectedTestHeader, Results[Spec.OldHeader]);
EXPECT_EQ(ExpectedNewHeader, Results[Spec.NewHeader]);
}
TEST(ClangMove, MoveCCOnly) {
move::MoveDefinitionSpec Spec;
Spec.Names = {std::string("a::b::Foo")};
Spec.OldCC = "foo.cc";
Spec.NewCC = "new_foo.cc";
std::string ExpectedHeader = "#include \"foo.h\"\n\n";
auto Results = runClangMoveOnCode(Spec);
EXPECT_EQ(2u, Results.size());
EXPECT_EQ(ExpectedTestCC, Results[Spec.OldCC]);
EXPECT_EQ(ExpectedHeader + ExpectedNewCC, Results[Spec.NewCC]);
}
TEST(ClangMove, MoveNonExistClass) {
move::MoveDefinitionSpec Spec;
Spec.Names = {std::string("NonExistFoo")};
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
auto Results = runClangMoveOnCode(Spec);
EXPECT_EQ(0u, Results.size());
}
TEST(ClangMove, HeaderIncludeSelf) {
move::MoveDefinitionSpec Spec;
Spec.Names = {std::string("Foo")};
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
const char TestHeader[] = "#ifndef FOO_H\n"
"#define FOO_H\n"
"#include \"foo.h\"\n"
"class Foo {};\n"
"#endif\n";
const char TestCode[] = "#include \"foo.h\"";
const char ExpectedNewHeader[] = "#ifndef FOO_H\n"
"#define FOO_H\n"
"#include \"new_foo.h\"\n"
"class Foo {};\n"
"#endif\n";
const char ExpectedNewCC[] = "#include \"new_foo.h\"";
auto Results = runClangMoveOnCode(Spec, TestHeader, TestCode);
EXPECT_EQ("", Results[Spec.OldHeader]);
EXPECT_EQ(ExpectedNewHeader, Results[Spec.NewHeader]);
EXPECT_EQ(ExpectedNewCC, Results[Spec.NewCC]);
}
TEST(ClangMove, MoveAll) {
std::vector<std::string> TestHeaders = {
"class A {\npublic:\n int f();\n};",
// forward declaration.
"class B;\nclass A {\npublic:\n int f();\n};",
// template forward declaration.
"template <typename T> class B;\nclass A {\npublic:\n int f();\n};",
"namespace a {}\nclass A {\npublic:\n int f();\n};",
"namespace a {}\nusing namespace a;\nclass A {\npublic:\n int f();\n};",
};
const char Code[] = "#include \"foo.h\"\nint A::f() { return 0; }";
move::MoveDefinitionSpec Spec;
Spec.Names.push_back("A");
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
for (const auto& Header : TestHeaders) {
auto Results = runClangMoveOnCode(Spec, Header.c_str(), Code);
EXPECT_EQ(Header, Results[Spec.NewHeader]);
EXPECT_EQ("", Results[Spec.OldHeader]);
EXPECT_EQ("", Results[Spec.OldCC]);
}
}
TEST(ClangMove, MoveAllMultipleClasses) {
move::MoveDefinitionSpec Spec;
std::vector<std::string> TestHeaders = {
"class C;\nclass A {\npublic:\n int f();\n};\nclass B {};",
"class C;\nclass B;\nclass A {\npublic:\n int f();\n};\nclass B {};",
};
const char Code[] = "#include \"foo.h\"\nint A::f() { return 0; }";
Spec.Names = {std::string("A"), std::string("B")};
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
for (const auto& Header : TestHeaders) {
auto Results = runClangMoveOnCode(Spec, Header.c_str(), Code);
EXPECT_EQ(Header, Results[Spec.NewHeader]);
EXPECT_EQ("", Results[Spec.OldHeader]);
EXPECT_EQ("", Results[Spec.OldCC]);
}
}
TEST(ClangMove, DontMoveAll) {
const char ExpectedHeader[] = "#ifndef NEW_FOO_H\n"
"#define NEW_FOO_H\n"
"\n"
"class A {\npublic:\n int f();\n};\n"
"\n"
"#endif // NEW_FOO_H\n";
const char Code[] = "#include \"foo.h\"\nint A::f() { return 0; }";
std::vector<std::string> TestHeaders = {
"class B {};\nclass A {\npublic:\n int f();\n};\n",
"void f() {};\nclass A {\npublic:\n int f();\n};\n",
};
move::MoveDefinitionSpec Spec;
Spec.Names.push_back("A");
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
for (const auto& Header : TestHeaders) {
auto Results = runClangMoveOnCode(Spec, Header.c_str(), Code);
EXPECT_EQ(ExpectedHeader, Results[Spec.NewHeader]);
// The expected old header should not contain class A definition.
std::string ExpectedOldHeader = Header.substr(0, Header.size() - 32);
EXPECT_EQ(ExpectedOldHeader, Results[Spec.OldHeader]);
}
}
TEST(ClangMove, IgnoreMacroSymbolsAndMoveAll) {
const char TestCode[] = "#include \"foo.h\"";
std::vector<std::string> TestHeaders = {
"#define DEFINE_Foo int Foo = 1;\nDEFINE_Foo;\nclass Bar {};\n",
"#define DEFINE(x) int var_##x = 1;\nDEFINE(foo);\nclass Bar {};\n",
};
move::MoveDefinitionSpec Spec;
Spec.Names.push_back("Bar");
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
for (const auto& Header : TestHeaders) {
auto Results = runClangMoveOnCode(Spec, Header.c_str(), TestCode);
EXPECT_EQ("", Results[Spec.OldHeader]);
EXPECT_EQ(Header, Results[Spec.NewHeader]);
}
}
TEST(ClangMove, MacroInFunction) {
const char TestHeader[] = "#define INT int\n"
"class A {\npublic:\n int f();\n};\n"
"class B {};\n";
const char TestCode[] = "#include \"foo.h\"\n"
"INT A::f() { return 0; }\n";
const char ExpectedNewCode[] = "#include \"new_foo.h\"\n\n"
"INT A::f() { return 0; }\n";
move::MoveDefinitionSpec Spec;
Spec.Names.push_back("A");
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
auto Results = runClangMoveOnCode(Spec, TestHeader, TestCode);
EXPECT_EQ(ExpectedNewCode, Results[Spec.NewCC]);
}
TEST(ClangMove, DefinitionInMacro) {
const char TestHeader[] = "#define DEF(CLASS) void CLASS##_::f() {}\n"
"#define DEF2(CLASS, ...) void CLASS##_::f2() {}\n"
"class A_ {\nvoid f();\nvoid f2();\n};\n"
"class B {};\n";
const char TestCode[] = "#include \"foo.h\"\n"
"DEF(A)\n\n"
"DEF2(A,\n"
" 123)\n";
const char ExpectedNewCode[] = "#include \"new_foo.h\"\n\n"
"DEF(A)\n\n"
"DEF2(A, 123)\n";
move::MoveDefinitionSpec Spec;
Spec.Names.push_back("A_");
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
auto Results = runClangMoveOnCode(Spec, TestHeader, TestCode);
EXPECT_EQ(ExpectedNewCode, Results[Spec.NewCC]);
}
TEST(ClangMove, WellFormattedCode) {
const std::string CommonHeader =
"namespace a {\n"
"namespace b {\n"
"namespace c {\n"
"class C;\n"
"\n"
"class A {\npublic:\n void f();\n void f2();\n};\n"
"} // namespace c\n"
"} // namespace b\n"
"\n"
"namespace d {\n"
"namespace e {\n"
"class B {\npublic:\n void f();\n};\n"
"} // namespace e\n"
"} // namespace d\n"
"} // namespace a\n";
const std::string CommonCode = "\n"
"namespace a {\n"
"namespace b {\n"
"namespace c {\n"
"void A::f() {}\n"
"\n"
"void A::f2() {}\n"
"} // namespace c\n"
"} // namespace b\n"
"\n"
"namespace d {\n"
"namespace e {\n"
"void B::f() {}\n"
"} // namespace e\n"
"} // namespace d\n"
"} // namespace a\n";
// Add dummy class to prevent behavior of moving all declarations from header.
const std::string TestHeader = CommonHeader + "class D {};\n";
const std::string TestCode = "#include \"foo.h\"\n" + CommonCode;
const std::string ExpectedNewHeader = "#ifndef NEW_FOO_H\n"
"#define NEW_FOO_H\n"
"\n" +
CommonHeader +
"\n"
"#endif // NEW_FOO_H\n";
const std::string ExpectedNewCC = "#include \"new_foo.h\"\n" + CommonCode;
move::MoveDefinitionSpec Spec;
Spec.Names.push_back("a::b::c::A");
Spec.Names.push_back("a::d::e::B");
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
auto Results = runClangMoveOnCode(Spec, TestHeader.c_str(), TestCode.c_str());
EXPECT_EQ(ExpectedNewCC, Results[Spec.NewCC]);
EXPECT_EQ(ExpectedNewHeader, Results[Spec.NewHeader]);
}
TEST(ClangMove, AddDependentNewHeader) {
const char TestHeader[] = "class A {};\n"
"class B {};\n";
const char TestCode[] = "#include \"foo.h\"\n";
const char ExpectedOldHeader[] = "#include \"new_foo.h\"\nclass B {};\n";
const char ExpectedNewHeader[] = "#ifndef NEW_FOO_H\n"
"#define NEW_FOO_H\n"
"\n"
"class A {};\n"
"\n"
"#endif // NEW_FOO_H\n";
move::MoveDefinitionSpec Spec;
Spec.Names.push_back("A");
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
Spec.OldDependOnNew = true;
auto Results = runClangMoveOnCode(Spec, TestHeader, TestCode);
EXPECT_EQ(ExpectedOldHeader, Results[Spec.OldHeader]);
EXPECT_EQ(ExpectedNewHeader, Results[Spec.NewHeader]);
}
TEST(ClangMove, AddDependentOldHeader) {
const char TestHeader[] = "class A {};\n"
"class B {};\n";
const char TestCode[] = "#include \"foo.h\"\n";
const char ExpectedNewHeader[] = "#ifndef NEW_FOO_H\n"
"#define NEW_FOO_H\n"
"\n"
"#include \"foo.h\"\n"
"\n"
"class B {};\n"
"\n"
"#endif // NEW_FOO_H\n";
const char ExpectedOldHeader[] = "class A {};\n";
move::MoveDefinitionSpec Spec;
Spec.Names.push_back("B");
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
Spec.NewDependOnOld = true;
auto Results = runClangMoveOnCode(Spec, TestHeader, TestCode);
EXPECT_EQ(ExpectedNewHeader, Results[Spec.NewHeader]);
EXPECT_EQ(ExpectedOldHeader, Results[Spec.OldHeader]);
}
TEST(ClangMove, DumpDecls) {
const char TestHeader[] = "template <typename T>\n"
"class A {\n"
" public:\n"
" void f();\n"
" template <typename U> void h();\n"
" static int b;\n"
"};\n"
"\n"
"template <typename T> void A<T>::f() {}\n"
"\n"
"template <typename T>\n"
"template <typename U>\n"
"void A<T>::h() {}\n"
"\n"
"template <typename T> int A<T>::b = 2;\n"
"\n"
"template <> class A<int> {};\n"
"\n"
"class B {};\n"
"\n"
"namespace a {\n"
"class Move1 {};\n"
"void f1() {}\n"
"template <typename T>"
"void f2(T t);\n"
"} // namespace a\n"
"\n"
"class ForwardClass;\n"
"namespace a {\n"
"namespace b {\n"
"class Move1 { public : void f(); };\n"
"void f() {}\n"
"enum E1 { Green };\n"
"enum class E2 { Red };\n"
"typedef int Int2;\n"
"typedef A<double> A_d;"
"using Int = int;\n"
"template <typename T>\n"
"using AA = A<T>;\n"
"extern int kGlobalInt;\n"
"extern const char* const kGlobalStr;\n"
"} // namespace b\n"
"} // namespace a\n"
"#define DEFINE_FOO class Foo {};\n"
"DEFINE_FOO\n";
const char TestCode[] = "#include \"foo.h\"\n";
move::MoveDefinitionSpec Spec;
Spec.Names.push_back("B");
Spec.OldHeader = "foo.h";
Spec.OldCC = "foo.cc";
Spec.NewHeader = "new_foo.h";
Spec.NewCC = "new_foo.cc";
DeclarationReporter Reporter;
std::vector<DeclarationReporter::Declaration> ExpectedDeclarations = {
{"A", "Class", true},
{"B", "Class", false},
{"a::Move1", "Class", false},
{"a::f1", "Function", false},
{"a::f2", "Function", true},
{"a::b::Move1", "Class", false},
{"a::b::f", "Function", false},
{"a::b::E1", "Enum", false},
{"a::b::E2", "Enum", false},
{"a::b::Int2", "TypeAlias", false},
{"a::b::A_d", "TypeAlias", false},
{"a::b::Int", "TypeAlias", false},
{"a::b::AA", "TypeAlias", true},
{"a::b::kGlobalInt", "Variable", false},
{"a::b::kGlobalStr", "Variable", false}};
runClangMoveOnCode(Spec, TestHeader, TestCode, &Reporter);
std::vector<DeclarationReporter::Declaration> Results;
for (const auto &DelPair : Reporter.getDeclarationList())
Results.push_back(DelPair);
EXPECT_THAT(ExpectedDeclarations,
testing::UnorderedElementsAreArray(Results));
}
} // namespace
} // namespace move
} // namespace clang