75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
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//===- MutationsTest.cpp --------------------------------------------------===//
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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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//
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// This file tests mutation API for syntax trees.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Tooling/Syntax/Mutations.h"
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#include "TreeTestBase.h"
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#include "clang/Tooling/Syntax/BuildTree.h"
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using namespace clang;
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using namespace clang::syntax;
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namespace {
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class MutationTest : public SyntaxTreeTest {
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protected:
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using Transformation = std::function<void(const llvm::Annotations & /*Input*/,
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TranslationUnit * /*Root*/)>;
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void CheckTransformation(Transformation Transform, std::string Input,
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std::string Expected) {
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llvm::Annotations Source(Input);
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auto *Root = buildTree(Source.code(), GetParam());
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Transform(Source, Root);
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auto Replacements = syntax::computeReplacements(*Arena, *Root);
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auto Output = tooling::applyAllReplacements(Source.code(), Replacements);
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if (!Output) {
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ADD_FAILURE() << "could not apply replacements: "
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<< llvm::toString(Output.takeError());
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return;
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}
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EXPECT_EQ(Expected, *Output) << "input is:\n" << Input;
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};
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// Removes the selected statement. Input should have exactly one selected
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// range and it should correspond to a single statement.
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Transformation RemoveStatement = [this](const llvm::Annotations &Input,
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TranslationUnit *Root) {
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auto *S = cast<syntax::Statement>(nodeByRange(Input.range(), Root));
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ASSERT_TRUE(S->canModify()) << "cannot remove a statement";
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syntax::removeStatement(*Arena, S);
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EXPECT_TRUE(S->isDetached());
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EXPECT_FALSE(S->isOriginal())
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<< "node removed from tree cannot be marked as original";
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};
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};
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INSTANTIATE_TEST_CASE_P(SyntaxTreeTests, MutationTest,
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::testing::ValuesIn(allTestClangConfigs()), );
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TEST_P(MutationTest, RemoveStatement_InCompound) {
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CheckTransformation(RemoveStatement, "void test() { [[100+100;]] test(); }",
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"void test() { test(); }");
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}
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TEST_P(MutationTest, RemoveStatement_InCompound_Empty) {
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CheckTransformation(RemoveStatement, "void test() { [[;]] }",
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"void test() { }");
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}
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TEST_P(MutationTest, RemoveStatement_LeaveEmpty) {
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CheckTransformation(RemoveStatement, "void test() { if (1) [[{}]] else {} }",
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"void test() { if (1) ; else {} }");
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}
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} // namespace
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