forked from OSchip/llvm-project
510 lines
20 KiB
C++
510 lines
20 KiB
C++
//===- unittest/Format/CleanupTest.cpp - Code cleanup unit tests ----------===//
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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/Format/Format.h"
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#include "../Tooling/ReplacementTest.h"
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#include "../Tooling/RewriterTestContext.h"
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#include "clang/Tooling/Core/Replacement.h"
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#include "gtest/gtest.h"
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using clang::tooling::ReplacementTest;
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using clang::tooling::toReplacements;
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namespace clang {
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namespace format {
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namespace {
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class CleanupTest : public ::testing::Test {
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protected:
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std::string cleanup(llvm::StringRef Code,
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const std::vector<tooling::Range> &Ranges,
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const FormatStyle &Style = getLLVMStyle()) {
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tooling::Replacements Replaces = format::cleanup(Style, Code, Ranges);
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auto Result = applyAllReplacements(Code, Replaces);
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EXPECT_TRUE(static_cast<bool>(Result));
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return *Result;
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}
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// Returns code after cleanup around \p Offsets.
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std::string cleanupAroundOffsets(llvm::ArrayRef<unsigned> Offsets,
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llvm::StringRef Code,
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const FormatStyle &Style = getLLVMStyle()) {
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std::vector<tooling::Range> Ranges;
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for (auto Offset : Offsets)
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Ranges.push_back(tooling::Range(Offset, 0));
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return cleanup(Code, Ranges, Style);
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}
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};
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TEST_F(CleanupTest, DeleteEmptyNamespaces) {
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std::string Code = "namespace A {\n"
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"namespace B {\n"
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"} // namespace B\n"
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"} // namespace A\n\n"
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"namespace C {\n"
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"namespace D { int i; }\n"
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"inline namespace E { namespace { } }\n"
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"}";
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std::string Expected = "\n\n\n\n\nnamespace C {\n"
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"namespace D { int i; }\n \n"
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"}";
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EXPECT_EQ(Expected, cleanupAroundOffsets({28, 91, 132}, Code));
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}
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TEST_F(CleanupTest, NamespaceWithSyntaxError) {
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std::string Code = "namespace A {\n"
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"namespace B {\n" // missing r_brace
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"} // namespace A\n\n"
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"namespace C {\n"
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"namespace D int i; }\n"
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"inline namespace E { namespace { } }\n"
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"}";
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std::string Expected = "namespace A {\n"
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"\n\n\nnamespace C {\n"
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"namespace D int i; }\n \n"
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"}";
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std::vector<tooling::Range> Ranges(1, tooling::Range(0, Code.size()));
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EXPECT_EQ(Expected, cleanup(Code, Ranges));
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}
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TEST_F(CleanupTest, EmptyNamespaceNotAffected) {
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std::string Code = "namespace A {\n\n"
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"namespace {\n\n}}";
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// Even though the namespaces are empty, but the inner most empty namespace
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// block is not affected by the changed ranges.
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std::string Expected = "namespace A {\n\n"
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"namespace {\n\n}}";
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// Set the changed range to be the second "\n".
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EXPECT_EQ(Expected, cleanupAroundOffsets({14}, Code));
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}
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TEST_F(CleanupTest, EmptyNamespaceWithCommentsNoBreakBeforeBrace) {
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std::string Code = "namespace A {\n"
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"namespace B {\n"
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"// Yo\n"
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"} // namespace B\n"
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"} // namespace A\n"
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"namespace C { // Yo\n"
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"}";
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std::string Expected = "\n\n\n\n\n\n";
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std::vector<tooling::Range> Ranges(1, tooling::Range(0, Code.size()));
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std::string Result = cleanup(Code, Ranges);
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EXPECT_EQ(Expected, Result);
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}
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TEST_F(CleanupTest, EmptyNamespaceWithCommentsBreakBeforeBrace) {
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std::string Code = "namespace A\n"
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"/* Yo */ {\n"
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"namespace B\n"
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"{\n"
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"// Yo\n"
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"} // namespace B\n"
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"} // namespace A\n"
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"namespace C\n"
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"{ // Yo\n"
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"}\n";
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std::string Expected = "\n\n\n\n\n\n\n\n\n\n";
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std::vector<tooling::Range> Ranges(1, tooling::Range(0, Code.size()));
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FormatStyle Style = getLLVMStyle();
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Style.BraceWrapping.AfterNamespace = true;
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std::string Result = cleanup(Code, Ranges, Style);
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EXPECT_EQ(Expected, Result);
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}
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TEST_F(CleanupTest, EmptyNamespaceAroundConditionalCompilation) {
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std::string Code = "#ifdef A\n"
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"int a;\n"
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"int b;\n"
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"#else\n"
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"#endif\n"
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"namespace {}";
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std::string Expected = "#ifdef A\n"
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"int a;\n"
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"int b;\n"
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"#else\n"
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"#endif\n";
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std::vector<tooling::Range> Ranges(1, tooling::Range(0, Code.size()));
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FormatStyle Style = getLLVMStyle();
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std::string Result = cleanup(Code, Ranges, Style);
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EXPECT_EQ(Expected, Result);
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}
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TEST_F(CleanupTest, CtorInitializationSimpleRedundantComma) {
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std::string Code = "class A {\nA() : , {} };";
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std::string Expected = "class A {\nA() {} };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({17, 19}, Code));
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Code = "class A {\nA() : x(1), {} };";
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Expected = "class A {\nA() : x(1) {} };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({23}, Code));
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Code = "class A {\nA() :,,,,{} };";
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Expected = "class A {\nA() {} };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({15}, Code));
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}
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TEST_F(CleanupTest, CtorInitializationSimpleRedundantColon) {
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std::string Code = "class A {\nA() : =default; };";
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std::string Expected = "class A {\nA() =default; };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({15}, Code));
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Code = "class A {\nA() : , =default; };";
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Expected = "class A {\nA() =default; };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({15}, Code));
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}
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TEST_F(CleanupTest, ListRedundantComma) {
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std::string Code = "void f() { std::vector<int> v = {1,2,,,3,{4,5}}; }";
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std::string Expected = "void f() { std::vector<int> v = {1,2,3,{4,5}}; }";
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EXPECT_EQ(Expected, cleanupAroundOffsets({40}, Code));
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Code = "int main() { f(1,,2,3,,4);}";
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Expected = "int main() { f(1,2,3,4);}";
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EXPECT_EQ(Expected, cleanupAroundOffsets({17, 22}, Code));
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}
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TEST_F(CleanupTest, NoCleanupsForJavaScript) {
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std::string Code = "function f() { var x = [a, b, , c]; }";
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std::string Expected = "function f() { var x = [a, b, , c]; }";
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const FormatStyle &Style = getGoogleStyle(FormatStyle::LK_JavaScript);
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EXPECT_EQ(Expected, cleanupAroundOffsets({30}, Code, Style));
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}
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TEST_F(CleanupTest, TrailingCommaInParens) {
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std::string Code = "int main() { f(,1,,2,3,f(1,2,),4,,);}";
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std::string Expected = "int main() { f(1,2,3,f(1,2),4);}";
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EXPECT_EQ(Expected, cleanupAroundOffsets({15, 18, 29, 33}, Code));
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// Lambda contents are also checked for trailing commas.
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Code = "int main() { [](){f(,1,,2,3,f(1,2,),4,,);}();}";
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Expected = "int main() { [](){f(1,2,3,f(1,2),4);}();}";
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EXPECT_EQ(Expected, cleanupAroundOffsets({20, 23, 34, 38}, Code));
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}
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TEST_F(CleanupTest, TrailingCommaInBraces) {
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// Trailing comma is allowed in brace list.
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// If there was trailing comma in the original code, then trailing comma is
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// preserved. In this example, element between the last two commas is deleted
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// causing the second-last comma to be redundant.
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std::string Code = "void f() { std::vector<int> v = {1,2,3,,}; }";
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std::string Expected = "void f() { std::vector<int> v = {1,2,3,}; }";
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EXPECT_EQ(Expected, cleanupAroundOffsets({39}, Code));
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// If there was no trailing comma in the original code, then trailing comma
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// introduced by replacements should be cleaned up. In this example, the
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// element after the last comma is deleted causing the last comma to be
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// redundant.
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Code = "void f() { std::vector<int> v = {1,2,3,}; }";
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// FIXME: redundant trailing comma should be removed.
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Expected = "void f() { std::vector<int> v = {1,2,3,}; }";
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EXPECT_EQ(Expected, cleanupAroundOffsets({39}, Code));
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// Still no trailing comma in the original code, but two elements are deleted,
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// which makes it seems like there was trailing comma.
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Code = "void f() { std::vector<int> v = {1, 2, 3, , }; }";
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// FIXME: redundant trailing comma should also be removed.
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Expected = "void f() { std::vector<int> v = {1, 2, 3, }; }";
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EXPECT_EQ(Expected, cleanupAroundOffsets({42, 44}, Code));
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}
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TEST_F(CleanupTest, CtorInitializationBracesInParens) {
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std::string Code = "class A {\nA() : x({1}),, {} };";
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std::string Expected = "class A {\nA() : x({1}) {} };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({24, 26}, Code));
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}
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TEST_F(CleanupTest, RedundantCommaNotInAffectedRanges) {
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std::string Code =
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"class A {\nA() : x({1}), /* comment */, { int x = 0; } };";
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std::string Expected =
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"class A {\nA() : x({1}), /* comment */, { int x = 0; } };";
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// Set the affected range to be "int x = 0", which does not intercept the
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// constructor initialization list.
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std::vector<tooling::Range> Ranges(1, tooling::Range(42, 9));
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std::string Result = cleanup(Code, Ranges);
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EXPECT_EQ(Expected, Result);
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Code = "class A {\nA() : x(1), {} };";
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Expected = "class A {\nA() : x(1), {} };";
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// No range. Fixer should do nothing.
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Ranges.clear();
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Result = cleanup(Code, Ranges);
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EXPECT_EQ(Expected, Result);
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}
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TEST_F(CleanupTest, RemoveCommentsAroundDeleteCode) {
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std::string Code =
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"class A {\nA() : x({1}), /* comment */, /* comment */ {} };";
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std::string Expected = "class A {\nA() : x({1}) {} };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({25, 40}, Code));
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Code = "class A {\nA() : x({1}), // comment\n {} };";
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Expected = "class A {\nA() : x({1})\n {} };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({25}, Code));
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Code = "class A {\nA() : x({1}), // comment\n , y(1),{} };";
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Expected = "class A {\nA() : x({1}), y(1){} };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({38}, Code));
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Code = "class A {\nA() : x({1}), \n/* comment */, y(1),{} };";
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Expected = "class A {\nA() : x({1}), \n y(1){} };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({40}, Code));
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Code = "class A {\nA() : , // comment\n y(1),{} };";
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Expected = "class A {\nA() : // comment\n y(1){} };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({17}, Code));
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Code = "class A {\nA() // comment\n : ,,{} };";
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Expected = "class A {\nA() // comment\n {} };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({30}, Code));
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Code = "class A {\nA() // comment\n : ,,=default; };";
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Expected = "class A {\nA() // comment\n =default; };";
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EXPECT_EQ(Expected, cleanupAroundOffsets({30}, Code));
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}
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TEST_F(CleanupTest, CtorInitializerInNamespace) {
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std::string Code = "namespace A {\n"
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"namespace B {\n" // missing r_brace
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"} // namespace A\n\n"
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"namespace C {\n"
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"class A { A() : x(0),, {} };\n"
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"inline namespace E { namespace { } }\n"
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"}";
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std::string Expected = "namespace A {\n"
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"\n\n\nnamespace C {\n"
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"class A { A() : x(0) {} };\n \n"
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"}";
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std::vector<tooling::Range> Ranges(1, tooling::Range(0, Code.size()));
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std::string Result = cleanup(Code, Ranges);
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EXPECT_EQ(Expected, Result);
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}
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class CleanUpReplacementsTest : public ReplacementTest {
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protected:
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tooling::Replacement createReplacement(unsigned Offset, unsigned Length,
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StringRef Text) {
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return tooling::Replacement(FileName, Offset, Length, Text);
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}
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tooling::Replacement createInsertion(StringRef IncludeDirective) {
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return createReplacement(UINT_MAX, 0, IncludeDirective);
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}
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tooling::Replacement createDeletion(StringRef HeaderName) {
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return createReplacement(UINT_MAX, 1, HeaderName);
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}
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inline std::string apply(StringRef Code,
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const tooling::Replacements &Replaces) {
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auto CleanReplaces = cleanupAroundReplacements(Code, Replaces, Style);
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EXPECT_TRUE(static_cast<bool>(CleanReplaces))
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<< llvm::toString(CleanReplaces.takeError()) << "\n";
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auto Result = applyAllReplacements(Code, *CleanReplaces);
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EXPECT_TRUE(static_cast<bool>(Result));
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return *Result;
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}
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inline std::string formatAndApply(StringRef Code,
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const tooling::Replacements &Replaces) {
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auto CleanReplaces = cleanupAroundReplacements(Code, Replaces, Style);
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EXPECT_TRUE(static_cast<bool>(CleanReplaces))
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<< llvm::toString(CleanReplaces.takeError()) << "\n";
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auto FormattedReplaces = formatReplacements(Code, *CleanReplaces, Style);
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EXPECT_TRUE(static_cast<bool>(FormattedReplaces))
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<< llvm::toString(FormattedReplaces.takeError()) << "\n";
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auto Result = applyAllReplacements(Code, *FormattedReplaces);
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EXPECT_TRUE(static_cast<bool>(Result));
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return *Result;
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}
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int getOffset(StringRef Code, int Line, int Column) {
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RewriterTestContext Context;
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FileID ID = Context.createInMemoryFile(FileName, Code);
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auto DecomposedLocation =
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Context.Sources.getDecomposedLoc(Context.getLocation(ID, Line, Column));
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return DecomposedLocation.second;
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}
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const std::string FileName = "fix.cpp";
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FormatStyle Style = getLLVMStyle();
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};
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TEST_F(CleanUpReplacementsTest, FixOnlyAffectedCodeAfterReplacements) {
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std::string Code = "namespace A {\n"
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"namespace B {\n"
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" int x;\n"
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"} // namespace B\n"
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"} // namespace A\n"
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"\n"
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"namespace C {\n"
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"namespace D { int i; }\n"
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"inline namespace E { namespace { int y; } }\n"
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"int x= 0;"
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"}";
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std::string Expected = "\n\nnamespace C {\n"
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"namespace D { int i; }\n\n"
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"int x= 0;"
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"}";
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tooling::Replacements Replaces =
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toReplacements({createReplacement(getOffset(Code, 3, 3), 6, ""),
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createReplacement(getOffset(Code, 9, 34), 6, "")});
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EXPECT_EQ(Expected, formatAndApply(Code, Replaces));
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}
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TEST_F(CleanUpReplacementsTest, InsertMultipleIncludesLLVMStyle) {
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std::string Code = "#include \"x/fix.h\"\n"
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"#include \"a.h\"\n"
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"#include \"b.h\"\n"
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"#include \"z.h\"\n"
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"#include \"clang/Format/Format.h\"\n"
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"#include <memory>\n";
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std::string Expected = "#include \"x/fix.h\"\n"
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"#include \"a.h\"\n"
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"#include \"b.h\"\n"
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"#include \"new/new.h\"\n"
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"#include \"z.h\"\n"
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"#include \"clang/Format/Format.h\"\n"
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"#include <list>\n"
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"#include <memory>\n";
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tooling::Replacements Replaces =
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toReplacements({createInsertion("#include <list>"),
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createInsertion("#include \"new/new.h\"")});
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EXPECT_EQ(Expected, apply(Code, Replaces));
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}
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TEST_F(CleanUpReplacementsTest, InsertMultipleIncludesGoogleStyle) {
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std::string Code = "#include \"x/fix.h\"\n"
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"\n"
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"#include <vector>\n"
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"\n"
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"#include \"y/a.h\"\n"
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"#include \"z/b.h\"\n";
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std::string Expected = "#include \"x/fix.h\"\n"
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"\n"
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"#include <list>\n"
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"#include <vector>\n"
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"\n"
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"#include \"x/x.h\"\n"
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"#include \"y/a.h\"\n"
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"#include \"z/b.h\"\n";
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tooling::Replacements Replaces =
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toReplacements({createInsertion("#include <list>"),
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createInsertion("#include \"x/x.h\"")});
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Style = format::getGoogleStyle(format::FormatStyle::LanguageKind::LK_Cpp);
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EXPECT_EQ(Expected, apply(Code, Replaces));
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}
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TEST_F(CleanUpReplacementsTest, InsertMultipleNewHeadersAndSortLLVM) {
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std::string Code = "\nint x;";
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std::string Expected = "\n#include \"fix.h\"\n"
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"#include \"a.h\"\n"
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"#include \"b.h\"\n"
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"#include \"c.h\"\n"
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"#include <list>\n"
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"#include <vector>\n"
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"int x;";
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tooling::Replacements Replaces = toReplacements(
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{createInsertion("#include \"a.h\""), createInsertion("#include \"c.h\""),
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createInsertion("#include \"b.h\""),
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createInsertion("#include <vector>"), createInsertion("#include <list>"),
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createInsertion("#include \"fix.h\"")});
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EXPECT_EQ(Expected, formatAndApply(Code, Replaces));
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}
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TEST_F(CleanUpReplacementsTest, InsertMultipleNewHeadersAndSortGoogle) {
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std::string Code = "\nint x;";
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std::string Expected = "\n#include \"fix.h\"\n"
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"\n"
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"#include <list>\n"
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"#include <vector>\n"
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"\n"
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"#include \"a.h\"\n"
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"#include \"b.h\"\n"
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"#include \"c.h\"\n"
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"int x;";
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tooling::Replacements Replaces = toReplacements(
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{createInsertion("#include \"a.h\""), createInsertion("#include \"c.h\""),
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createInsertion("#include \"b.h\""),
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createInsertion("#include <vector>"), createInsertion("#include <list>"),
|
|
createInsertion("#include \"fix.h\"")});
|
|
Style = format::getGoogleStyle(format::FormatStyle::LanguageKind::LK_Cpp);
|
|
EXPECT_EQ(Expected, formatAndApply(Code, Replaces));
|
|
}
|
|
|
|
TEST_F(CleanUpReplacementsTest, NoNewLineAtTheEndOfCodeMultipleInsertions) {
|
|
std::string Code = "#include <map>";
|
|
// FIXME: a better behavior is to only append on newline to Code, but this
|
|
// case should be rare in practice.
|
|
std::string Expected =
|
|
"#include <map>\n#include <string>\n\n#include <vector>\n";
|
|
tooling::Replacements Replaces =
|
|
toReplacements({createInsertion("#include <string>"),
|
|
createInsertion("#include <vector>")});
|
|
EXPECT_EQ(Expected, apply(Code, Replaces));
|
|
}
|
|
|
|
|
|
TEST_F(CleanUpReplacementsTest, FormatCorrectLineWhenHeadersAreInserted) {
|
|
std::string Code = "\n"
|
|
"int x;\n"
|
|
"int a;\n"
|
|
"int a;\n"
|
|
"int a;";
|
|
|
|
std::string Expected = "\n#include \"x.h\"\n"
|
|
"#include \"y.h\"\n"
|
|
"#include \"clang/x/x.h\"\n"
|
|
"#include <list>\n"
|
|
"#include <vector>\n"
|
|
"int x;\n"
|
|
"int a;\n"
|
|
"int b;\n"
|
|
"int a;";
|
|
tooling::Replacements Replaces = toReplacements(
|
|
{createReplacement(getOffset(Code, 4, 8), 1, "b"),
|
|
createInsertion("#include <vector>"), createInsertion("#include <list>"),
|
|
createInsertion("#include \"clang/x/x.h\""),
|
|
createInsertion("#include \"y.h\""),
|
|
createInsertion("#include \"x.h\"")});
|
|
EXPECT_EQ(Expected, formatAndApply(Code, Replaces));
|
|
}
|
|
|
|
TEST_F(CleanUpReplacementsTest, SimpleDeleteIncludes) {
|
|
std::string Code = "#include \"abc.h\"\n"
|
|
"#include \"xyz.h\" // comment\n"
|
|
"#include \"xyz\"\n"
|
|
"int x;\n";
|
|
std::string Expected = "#include \"xyz\"\n"
|
|
"int x;\n";
|
|
tooling::Replacements Replaces =
|
|
toReplacements({createDeletion("abc.h"), createDeletion("xyz.h")});
|
|
EXPECT_EQ(Expected, apply(Code, Replaces));
|
|
}
|
|
|
|
TEST_F(CleanUpReplacementsTest, InsertionAndDeleteHeader) {
|
|
std::string Code = "#include \"a.h\"\n"
|
|
"\n"
|
|
"#include <vector>\n";
|
|
std::string Expected = "#include \"a.h\"\n"
|
|
"\n"
|
|
"#include <map>\n";
|
|
tooling::Replacements Replaces = toReplacements(
|
|
{createDeletion("<vector>"), createInsertion("#include <map>")});
|
|
EXPECT_EQ(Expected, apply(Code, Replaces));
|
|
}
|
|
|
|
} // end namespace
|
|
} // end namespace format
|
|
} // end namespace clang
|