llvm-project/clang/unittests/Tooling/RefactoringCallbacksTest.cpp

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//===- unittest/Tooling/RefactoringCallbacksTest.cpp ----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Tooling/RefactoringCallbacks.h"
#include "RewriterTestContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/ASTMatchers/ASTMatchers.h"
2012-10-24 07:13:50 +08:00
#include "gtest/gtest.h"
namespace clang {
namespace tooling {
using namespace ast_matchers;
template <typename T>
void expectRewritten(const std::string &Code,
const std::string &Expected,
const T &AMatcher,
RefactoringCallback &Callback) {
MatchFinder Finder;
Finder.addMatcher(AMatcher, &Callback);
std::unique_ptr<tooling::FrontendActionFactory> Factory(
tooling::newFrontendActionFactory(&Finder));
ASSERT_TRUE(tooling::runToolOnCode(Factory->create(), Code))
<< "Parsing error in \"" << Code << "\"";
RewriterTestContext Context;
FileID ID = Context.createInMemoryFile("input.cc", Code);
EXPECT_TRUE(tooling::applyAllReplacements(Callback.getReplacements(),
Context.Rewrite));
EXPECT_EQ(Expected, Context.getRewrittenText(ID));
}
TEST(RefactoringCallbacksTest, ReplacesStmtsWithString) {
std::string Code = "void f() { int i = 1; }";
std::string Expected = "void f() { ; }";
ReplaceStmtWithText Callback("id", ";");
expectRewritten(Code, Expected, id("id", declStmt()), Callback);
}
TEST(RefactoringCallbacksTest, ReplacesStmtsInCalledMacros) {
std::string Code = "#define A void f() { int i = 1; }\nA";
std::string Expected = "#define A void f() { ; }\nA";
ReplaceStmtWithText Callback("id", ";");
expectRewritten(Code, Expected, id("id", declStmt()), Callback);
}
TEST(RefactoringCallbacksTest, IgnoresStmtsInUncalledMacros) {
std::string Code = "#define A void f() { int i = 1; }";
std::string Expected = "#define A void f() { int i = 1; }";
ReplaceStmtWithText Callback("id", ";");
expectRewritten(Code, Expected, id("id", declStmt()), Callback);
}
TEST(RefactoringCallbacksTest, ReplacesInteger) {
std::string Code = "void f() { int i = 1; }";
std::string Expected = "void f() { int i = 2; }";
ReplaceStmtWithText Callback("id", "2");
expectRewritten(Code, Expected, id("id", expr(integerLiteral())),
Callback);
}
TEST(RefactoringCallbacksTest, ReplacesStmtWithStmt) {
std::string Code = "void f() { int i = false ? 1 : i * 2; }";
std::string Expected = "void f() { int i = i * 2; }";
ReplaceStmtWithStmt Callback("always-false", "should-be");
expectRewritten(Code, Expected,
id("always-false", conditionalOperator(
hasCondition(cxxBoolLiteral(equals(false))),
hasFalseExpression(id("should-be", expr())))),
Callback);
}
TEST(RefactoringCallbacksTest, ReplacesIfStmt) {
std::string Code = "bool a; void f() { if (a) f(); else a = true; }";
std::string Expected = "bool a; void f() { f(); }";
ReplaceIfStmtWithItsBody Callback("id", true);
expectRewritten(Code, Expected,
id("id", ifStmt(
hasCondition(implicitCastExpr(hasSourceExpression(
declRefExpr(to(varDecl(hasName("a"))))))))),
Callback);
}
TEST(RefactoringCallbacksTest, RemovesEntireIfOnEmptyElse) {
std::string Code = "void f() { if (false) int i = 0; }";
std::string Expected = "void f() { }";
ReplaceIfStmtWithItsBody Callback("id", false);
expectRewritten(Code, Expected,
id("id", ifStmt(hasCondition(cxxBoolLiteral(equals(false))))),
Callback);
}
} // end namespace ast_matchers
} // end namespace clang