mirror of
https://github.com/capstone-engine/llvm-capstone.git
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3f69a1b860
This allows for writing tests including line comments easier and more readable. We will need more of those tests in the future and also line comments are useful to force line breaks in tests. llvm-svn: 170446
640 lines
20 KiB
C++
640 lines
20 KiB
C++
//===- unittest/Format/FormatTest.cpp - Formatting unit tests -------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Format/Format.h"
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#include "../Tooling/RewriterTestContext.h"
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#include "clang/Lex/Lexer.h"
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#include "gtest/gtest.h"
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namespace clang {
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namespace format {
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class FormatTest : public ::testing::Test {
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protected:
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std::string format(llvm::StringRef Code, unsigned Offset, unsigned Length,
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const FormatStyle &Style) {
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RewriterTestContext Context;
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FileID ID = Context.createInMemoryFile("input.cc", Code);
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SourceLocation Start =
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Context.Sources.getLocForStartOfFile(ID).getLocWithOffset(Offset);
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std::vector<CharSourceRange> Ranges(
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1,
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CharSourceRange::getCharRange(Start, Start.getLocWithOffset(Length)));
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LangOptions LangOpts;
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LangOpts.CPlusPlus = 1;
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Lexer Lex(ID, Context.Sources.getBuffer(ID), Context.Sources, LangOpts);
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tooling::Replacements Replace =
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reformat(Style, Lex, Context.Sources, Ranges);
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EXPECT_TRUE(applyAllReplacements(Replace, Context.Rewrite));
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return Context.getRewrittenText(ID);
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}
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std::string format(llvm::StringRef Code,
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const FormatStyle &Style = getLLVMStyle()) {
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return format(Code, 0, Code.size(), Style);
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}
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std::string messUp(llvm::StringRef Code) {
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std::string MessedUp(Code.str());
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bool InComment = false;
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bool JustReplacedNewline = false;
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for (unsigned i = 0, e = MessedUp.size() - 1; i != e; ++i) {
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if (MessedUp[i] == '/' && MessedUp[i + 1] == '/') {
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if (JustReplacedNewline)
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MessedUp[i - 1] = '\n';
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InComment = true;
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} else if (MessedUp[i] != ' ') {
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JustReplacedNewline = false;
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} else if (MessedUp[i] == '\n') {
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if (InComment) {
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InComment = false;
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} else {
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JustReplacedNewline = true;
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MessedUp[i] = ' ';
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}
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}
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}
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return MessedUp;
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}
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void verifyFormat(llvm::StringRef Code) {
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EXPECT_EQ(Code.str(), format(messUp(Code)));
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}
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void verifyGoogleFormat(llvm::StringRef Code) {
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EXPECT_EQ(Code.str(), format(messUp(Code), getGoogleStyle()));
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}
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};
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//===----------------------------------------------------------------------===//
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// Basic function tests.
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//===----------------------------------------------------------------------===//
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TEST_F(FormatTest, DoesNotChangeCorrectlyFormatedCode) {
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EXPECT_EQ(";", format(";"));
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}
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TEST_F(FormatTest, FormatsGlobalStatementsAt0) {
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EXPECT_EQ("int i;", format(" int i;"));
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EXPECT_EQ("\nint i;", format(" \n\t \r int i;"));
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EXPECT_EQ("int i;\nint j;", format(" int i; int j;"));
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EXPECT_EQ("int i;\nint j;", format(" int i;\n int j;"));
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}
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TEST_F(FormatTest, FormatsUnwrappedLinesAtFirstFormat) {
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EXPECT_EQ("int i;", format("int\ni;"));
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}
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TEST_F(FormatTest, FormatsNestedBlockStatements) {
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EXPECT_EQ("{\n {\n {\n }\n }\n}", format("{{{}}}"));
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}
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TEST_F(FormatTest, FormatsNestedCall) {
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verifyFormat("Method(f1, f2(f3));");
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verifyFormat("Method(f1(f2, f3()));");
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}
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//===----------------------------------------------------------------------===//
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// Tests for control statements.
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//===----------------------------------------------------------------------===//
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TEST_F(FormatTest, FormatIfWithoutCompountStatement) {
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verifyFormat("if (true)\n f();\ng();");
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verifyFormat("if (a)\n if (b)\n if (c)\n g();\nh();");
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verifyFormat("if (a)\n if (b) {\n f();\n }\ng();");
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verifyFormat("if (a)\n"
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" // comment\n"
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" f();");
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}
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TEST_F(FormatTest, ParseIfElse) {
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verifyFormat("if (true)\n"
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" if (true)\n"
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" if (true)\n"
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" f();\n"
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" else\n"
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" g();\n"
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" else\n"
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" h();\n"
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"else\n"
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" i();");
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verifyFormat("if (true)\n"
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" if (true)\n"
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" if (true) {\n"
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" if (true)\n"
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" f();\n"
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" } else {\n"
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" g();\n"
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" }\n"
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" else\n"
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" h();\n"
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"else {\n"
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" i();\n"
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"}");
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}
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TEST_F(FormatTest, ElseIf) {
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verifyFormat("if (a) {\n"
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"} else if (b) {\n"
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"}");
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verifyFormat("if (a)\n"
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" f();\n"
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"else if (b)\n"
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" g();\n"
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"else\n"
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" h();");
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}
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TEST_F(FormatTest, FormatsForLoop) {
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verifyFormat(
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"for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n"
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" ++VeryVeryLongLoopVariable)\n"
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" ;");
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verifyFormat("for (;;)\n"
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" f();");
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verifyFormat("for (;;) {\n"
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"}");
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verifyFormat("for (;;) {\n"
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" f();\n"
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"}");
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}
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TEST_F(FormatTest, FormatsWhileLoop) {
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verifyFormat("while (true) {\n}");
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verifyFormat("while (true)\n"
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" f();");
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verifyFormat("while () {\n"
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"}");
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verifyFormat("while () {\n"
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" f();\n"
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"}");
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}
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TEST_F(FormatTest, FormatsDoWhile) {
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verifyFormat("do {\n"
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" do_something();\n"
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"} while (something());");
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verifyFormat("do\n"
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" do_something();\n"
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"while (something());");
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}
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TEST_F(FormatTest, FormatsSwitchStatement) {
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verifyFormat("switch (x) {\n"
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"case 1:\n"
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" f();\n"
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" break;\n"
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"case kFoo:\n"
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"case ns::kBar:\n"
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"case kBaz:\n"
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" break;\n"
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"default:\n"
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" g();\n"
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" break;\n"
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"}");
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verifyFormat("switch (x) {\n"
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"case 1: {\n"
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" f();\n"
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" break;\n"
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"}\n"
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"}");
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verifyFormat("switch (test)\n"
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" ;");
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verifyGoogleFormat("switch (x) {\n"
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" case 1:\n"
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" f();\n"
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" break;\n"
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" case kFoo:\n"
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" case ns::kBar:\n"
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" case kBaz:\n"
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" break;\n"
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" default:\n"
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" g();\n"
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" break;\n"
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"}");
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verifyGoogleFormat("switch (x) {\n"
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" case 1: {\n"
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" f();\n"
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" break;\n"
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" }\n"
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"}");
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verifyGoogleFormat("switch (test)\n"
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" ;");
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}
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TEST_F(FormatTest, FormatsLabels) {
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verifyFormat("void f() {\n"
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" some_code();\n"
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"test_label:\n"
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" some_other_code();\n"
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" {\n"
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" some_more_code();\n"
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" another_label:\n"
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" some_more_code();\n"
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" }\n"
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"}");
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verifyFormat("some_code();\n"
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"test_label:\n"
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"some_other_code();");
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}
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//===----------------------------------------------------------------------===//
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// Tests for comments.
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//===----------------------------------------------------------------------===//
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TEST_F(FormatTest, UnderstandsSingleLineComments) {
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verifyFormat("// line 1\n"
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"// line 2\n"
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"void f() {\n}\n");
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verifyFormat("void f() {\n"
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" // Doesn't do anything\n"
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"}");
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verifyFormat("int i // This is a fancy variable\n"
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" = 5;");
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verifyFormat("enum E {\n"
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" // comment\n"
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" VAL_A, // comment\n"
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" VAL_B\n"
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"};");
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verifyFormat(
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
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" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment");
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}
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TEST_F(FormatTest, UnderstandsMultiLineComments) {
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verifyFormat("f(/*test=*/ true);");
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}
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//===----------------------------------------------------------------------===//
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// Tests for classes, namespaces, etc.
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//===----------------------------------------------------------------------===//
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TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) {
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verifyFormat("class A {\n};");
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}
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TEST_F(FormatTest, UnderstandsAccessSpecifiers) {
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verifyFormat("class A {\n"
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"public:\n"
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"protected:\n"
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"private:\n"
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" void f() {\n"
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" }\n"
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"};");
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verifyGoogleFormat("class A {\n"
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" public:\n"
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" protected:\n"
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" private:\n"
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" void f() {\n"
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" }\n"
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"};");
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}
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TEST_F(FormatTest, FormatsDerivedClass) {
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verifyFormat("class A : public B {\n"
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"};");
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verifyFormat("class A : public ::B {\n"
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"};");
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}
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TEST_F(FormatTest, FormatsEnum) {
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verifyFormat("enum {\n"
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" Zero,\n"
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" One = 1,\n"
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" Two = One + 1,\n"
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" Three = (One + Two),\n"
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" Four = (Zero && (One ^ Two)) | (One << Two),\n"
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" Five = (One, Two, Three, Four, 5)\n"
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"};");
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verifyFormat("enum Enum {\n"
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"};");
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verifyFormat("enum {\n"
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"};");
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}
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TEST_F(FormatTest, FormatsNamespaces) {
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verifyFormat("namespace some_namespace {\n"
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"class A {\n"
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"};\n"
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"void f() {\n"
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" f();\n"
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"}\n"
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"}");
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verifyFormat("namespace {\n"
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"class A {\n"
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"};\n"
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"void f() {\n"
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" f();\n"
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"}\n"
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"}");
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verifyFormat("using namespace some_namespace;\n"
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"class A {\n"
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"};\n"
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"void f() {\n"
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" f();\n"
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"}");
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}
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TEST_F(FormatTest, StaticInitializers) {
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verifyFormat("static SomeClass SC = { 1, 'a' };");
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// FIXME: Format like enums if the static initializer does not fit on a line.
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verifyFormat(
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"static SomeClass WithALoooooooooooooooooooongName = { 100000000,\n"
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" \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" };");
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}
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//===----------------------------------------------------------------------===//
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// Line break tests.
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//===----------------------------------------------------------------------===//
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TEST_F(FormatTest, FormatsFunctionDefinition) {
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verifyFormat("void f(int a, int b, int c, int d, int e, int f, int g,"
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" int h, int j, int f,\n"
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" int c, int ddddddddddddd) {\n"
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"}");
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}
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TEST_F(FormatTest, FormatsAwesomeMethodCall) {
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verifyFormat(
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"SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n"
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" parameter, parameter, parameter)), SecondLongCall(parameter));");
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}
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TEST_F(FormatTest, BreaksAsHighAsPossible) {
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verifyFormat(
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"if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n"
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" (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n"
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" f();");
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}
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TEST_F(FormatTest, BreaksDesireably) {
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verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
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" aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
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" aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n};");
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verifyFormat(
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"aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
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" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
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verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
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" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
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" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
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verifyFormat(
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"aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
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" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
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" aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
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" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));");
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verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
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" (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
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// This test case breaks on an incorrect memoization, i.e. an optimization not
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// taking into account the StopAt value.
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verifyFormat(
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"return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
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" aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
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" aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
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" (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
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}
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TEST_F(FormatTest, AlignsStringLiterals) {
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verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n"
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" \"short literal\");");
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verifyFormat(
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"looooooooooooooooooooooooongFunction(\n"
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" \"short literal\"\n"
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" \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");");
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}
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TEST_F(FormatTest, AlignsPipes) {
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verifyFormat(
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
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" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
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" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
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verifyFormat(
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"aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n"
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" << aaaaaaaaaaaaaaaaaaaa;");
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verifyFormat(
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
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" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
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verifyFormat(
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"llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
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" \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n"
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" << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";");
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verifyFormat(
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"aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
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" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
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" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
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}
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TEST_F(FormatTest, UnderstandsEquals) {
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verifyFormat(
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"aaaaaaaaaaaaaaaaa =\n"
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" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
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verifyFormat(
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"if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
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" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
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"}");
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verifyFormat(
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"if (a) {\n"
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"} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
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" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
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"}");
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verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
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" 100000000 + 100000000) {\n}");
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}
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TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) {
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verifyFormat(
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"LoooooooooooooooooooooooooooooooooooooongObject\n"
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" .looooooooooooooooooooooooooooooooooooooongFunction();");
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verifyFormat(
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"LoooooooooooooooooooooooooooooooooooooongObject\n"
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" ->looooooooooooooooooooooooooooooooooooooongFunction();");
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verifyFormat(
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"LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n"
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" Parameter2);");
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verifyFormat(
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"ShortObject->shortFunction(\n"
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" LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n"
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" LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);");
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verifyFormat("loooooooooooooongFunction(\n"
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" LoooooooooooooongObject->looooooooooooooooongFunction());");
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verifyFormat(
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"function(LoooooooooooooooooooooooooooooooooooongObject\n"
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" ->loooooooooooooooooooooooooooooooooooooooongFunction());");
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verifyFormat(
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"if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n"
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" aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
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"}");
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}
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TEST_F(FormatTest, UnderstandsTemplateParameters) {
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verifyFormat("A<int> a;");
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verifyFormat("A<A<A<int> > > a;");
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verifyFormat("A<A<A<int, 2>, 3>, 4> a;");
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verifyFormat("bool x = a < 1 || 2 > a;");
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verifyFormat("bool x = 5 < f<int>();");
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verifyFormat("bool x = f<int>() > 5;");
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verifyFormat("bool x = 5 < a<int>::x;");
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verifyFormat("bool x = a < 4 ? a > 2 : false;");
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verifyFormat("bool x = f() ? a < 2 : a > 2;");
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verifyGoogleFormat("A<A<int>> a;");
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verifyGoogleFormat("A<A<A<int>>> a;");
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verifyGoogleFormat("A<A<A<A<int>>>> a;");
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verifyFormat("test >> a >> b;");
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verifyFormat("test << a >> b;");
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verifyFormat("f<int>();");
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verifyFormat("template <typename T> void f() {\n}");
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}
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TEST_F(FormatTest, UndestandsUnaryOperators) {
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verifyFormat("int a = -2;");
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verifyFormat("f(-1, -2, -3);");
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verifyFormat("a[-1] = 5;");
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verifyFormat("int a = 5 + -2;");
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verifyFormat("if (i == -1) {\n}");
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|
verifyFormat("if (i != -1) {\n}");
|
|
verifyFormat("if (i > -1) {\n}");
|
|
verifyFormat("if (i < -1) {\n}");
|
|
verifyFormat("++(a->f());");
|
|
verifyFormat("--(a->f());");
|
|
verifyFormat("if (!(a->f())) {\n}");
|
|
}
|
|
|
|
TEST_F(FormatTest, UndestandsOverloadedOperators) {
|
|
verifyFormat("bool operator<() {\n}");
|
|
}
|
|
|
|
TEST_F(FormatTest, UnderstandsUsesOfStar) {
|
|
verifyFormat("int *f(int *a) {\n}");
|
|
verifyFormat("f(a, *a);");
|
|
verifyFormat("f(*a);");
|
|
verifyFormat("int a = b * 10;");
|
|
verifyFormat("int a = 10 * b;");
|
|
verifyFormat("int a = b * c;");
|
|
verifyFormat("int a += b * c;");
|
|
verifyFormat("int a -= b * c;");
|
|
verifyFormat("int a *= b * c;");
|
|
verifyFormat("int a /= b * c;");
|
|
verifyFormat("int a = *b;");
|
|
verifyFormat("int a = *b * c;");
|
|
verifyFormat("int a = b * *c;");
|
|
verifyFormat("int main(int argc, char **argv) {\n}");
|
|
|
|
// FIXME: Is this desired for LLVM? Fix if not.
|
|
verifyFormat("A<int *> a;");
|
|
verifyFormat("A<int **> a;");
|
|
verifyFormat("A<int *, int *> a;");
|
|
verifyFormat("A<int **, int **> a;");
|
|
|
|
verifyGoogleFormat("int main(int argc, char** argv) {\n}");
|
|
verifyGoogleFormat("A<int*> a;");
|
|
verifyGoogleFormat("A<int**> a;");
|
|
verifyGoogleFormat("A<int*, int*> a;");
|
|
verifyGoogleFormat("A<int**, int**> a;");
|
|
}
|
|
|
|
TEST_F(FormatTest, LineStartsWithSpecialCharacter) {
|
|
verifyFormat("(a)->b();");
|
|
verifyFormat("--a;");
|
|
}
|
|
|
|
TEST_F(FormatTest, HandlesIncludeDirectives) {
|
|
EXPECT_EQ("#include <string>\n", format("#include <string>\n"));
|
|
EXPECT_EQ("#include \"a/b/string\"\n", format("#include \"a/b/string\"\n"));
|
|
EXPECT_EQ("#include \"string.h\"\n", format("#include \"string.h\"\n"));
|
|
EXPECT_EQ("#include \"string.h\"\n", format("#include \"string.h\"\n"));
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Error recovery tests.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
TEST_F(FormatTest, IncorrectAccessSpecifier) {
|
|
verifyFormat("public:");
|
|
verifyFormat("class A {\n"
|
|
"public\n"
|
|
" void f() {\n"
|
|
" }\n"
|
|
"};");
|
|
verifyFormat("public\n"
|
|
"int qwerty;");
|
|
verifyFormat("public\n"
|
|
"B {\n"
|
|
"};");
|
|
verifyFormat("public\n"
|
|
"{\n"
|
|
"};");
|
|
verifyFormat("public\n"
|
|
"B {\n"
|
|
" int x;\n"
|
|
"};");
|
|
}
|
|
|
|
TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) {
|
|
verifyFormat("{");
|
|
}
|
|
|
|
TEST_F(FormatTest, IncorrectCodeDoNoWhile) {
|
|
verifyFormat("do {\n"
|
|
"};");
|
|
verifyFormat("do {\n"
|
|
"};\n"
|
|
"f();");
|
|
verifyFormat("do {\n"
|
|
"}\n"
|
|
"wheeee(fun);");
|
|
verifyFormat("do {\n"
|
|
" f();\n"
|
|
"};");
|
|
}
|
|
|
|
TEST_F(FormatTest, IncorrectCodeErrorDetection) {
|
|
EXPECT_EQ("{\n{\n}\n", format("{\n{\n}\n"));
|
|
EXPECT_EQ("{\n {\n}\n", format("{\n {\n}\n"));
|
|
EXPECT_EQ("{\n {\n }\n", format("{\n {\n }\n"));
|
|
EXPECT_EQ("{\n {\n }\n }\n}\n", format("{\n {\n }\n }\n}\n"));
|
|
|
|
FormatStyle Style = getLLVMStyle();
|
|
Style.ColumnLimit = 10;
|
|
EXPECT_EQ("{\n"
|
|
" {\n"
|
|
" breakme(\n"
|
|
" qwe);\n"
|
|
"}\n", format("{\n"
|
|
" {\n"
|
|
" breakme(qwe);\n"
|
|
"}\n", Style));
|
|
|
|
}
|
|
|
|
} // end namespace tooling
|
|
} // end namespace clang
|