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clang/unittests/Format/FormatTestComments.cpp

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//===- unittest/Format/FormatTestComments.cpp - Formatting unit tests -----===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Format/Format.h"
#include "../Tooling/ReplacementTest.h"
#include "FormatTestUtils.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/MemoryBuffer.h"
#include "gtest/gtest.h"
#define DEBUG_TYPE "format-test"
using clang::tooling::ReplacementTest;
namespace clang {
namespace format {
namespace {
FormatStyle getGoogleStyle() { return getGoogleStyle(FormatStyle::LK_Cpp); }
class FormatTestComments : public ::testing::Test {
protected:
enum StatusCheck {
SC_ExpectComplete,
SC_ExpectIncomplete,
SC_DoNotCheck
};
std::string format(llvm::StringRef Code,
const FormatStyle &Style = getLLVMStyle(),
StatusCheck CheckComplete = SC_ExpectComplete) {
LLVM_DEBUG(llvm::errs() << "---\n");
LLVM_DEBUG(llvm::errs() << Code << "\n\n");
std::vector<tooling::Range> Ranges(1, tooling::Range(0, Code.size()));
FormattingAttemptStatus Status;
tooling::Replacements Replaces =
reformat(Style, Code, Ranges, "<stdin>", &Status);
if (CheckComplete != SC_DoNotCheck) {
bool ExpectedCompleteFormat = CheckComplete == SC_ExpectComplete;
EXPECT_EQ(ExpectedCompleteFormat, Status.FormatComplete)
<< Code << "\n\n";
}
ReplacementCount = Replaces.size();
auto Result = applyAllReplacements(Code, Replaces);
EXPECT_TRUE(static_cast<bool>(Result));
LLVM_DEBUG(llvm::errs() << "\n" << *Result << "\n\n");
return *Result;
}
FormatStyle getLLVMStyleWithColumns(unsigned ColumnLimit) {
FormatStyle Style = getLLVMStyle();
Style.ColumnLimit = ColumnLimit;
return Style;
}
FormatStyle getTextProtoStyleWithColumns(unsigned ColumnLimit) {
FormatStyle Style = getGoogleStyle(FormatStyle::FormatStyle::LK_TextProto);
Style.ColumnLimit = ColumnLimit;
return Style;
}
void verifyFormat(llvm::StringRef Code,
const FormatStyle &Style = getLLVMStyle()) {
EXPECT_EQ(Code.str(), format(Code, Style)) << "Expected code is not stable";
EXPECT_EQ(Code.str(), format(test::messUp(Code), Style));
}
void verifyGoogleFormat(llvm::StringRef Code) {
verifyFormat(Code, getGoogleStyle());
}
/// \brief Verify that clang-format does not crash on the given input.
void verifyNoCrash(llvm::StringRef Code,
const FormatStyle &Style = getLLVMStyle()) {
format(Code, Style, SC_DoNotCheck);
}
int ReplacementCount;
};
//===----------------------------------------------------------------------===//
// Tests for comments.
//===----------------------------------------------------------------------===//
TEST_F(FormatTestComments, UnderstandsSingleLineComments) {
verifyFormat("//* */");
verifyFormat("// line 1\n"
"// line 2\n"
"void f() {}\n");
verifyFormat("void f() {\n"
" // Doesn't do anything\n"
"}");
verifyFormat("SomeObject\n"
" // Calling someFunction on SomeObject\n"
" .someFunction();");
verifyFormat("auto result = SomeObject\n"
" // Calling someFunction on SomeObject\n"
" .someFunction();");
verifyFormat("void f(int i, // some comment (probably for i)\n"
" int j, // some comment (probably for j)\n"
" int k); // some comment (probably for k)");
verifyFormat("void f(int i,\n"
" // some comment (probably for j)\n"
" int j,\n"
" // some comment (probably for k)\n"
" int k);");
verifyFormat("int i // This is a fancy variable\n"
" = 5; // with nicely aligned comment.");
verifyFormat("// Leading comment.\n"
"int a; // Trailing comment.");
verifyFormat("int a; // Trailing comment\n"
" // on 2\n"
" // or 3 lines.\n"
"int b;");
verifyFormat("int a; // Trailing comment\n"
"\n"
"// Leading comment.\n"
"int b;");
verifyFormat("int a; // Comment.\n"
" // More details.\n"
"int bbbb; // Another comment.");
verifyFormat(
"int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; // comment\n"
"int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // comment\n"
"int cccccccccccccccccccccccccccccc; // comment\n"
"int ddd; // looooooooooooooooooooooooong comment\n"
"int aaaaaaaaaaaaaaaaaaaaaaa; // comment\n"
"int bbbbbbbbbbbbbbbbbbbbb; // comment\n"
"int ccccccccccccccccccc; // comment");
verifyFormat("#include \"a\" // comment\n"
"#include \"a/b/c\" // comment");
verifyFormat("#include <a> // comment\n"
"#include <a/b/c> // comment");
EXPECT_EQ("#include \"a\" // comment\n"
"#include \"a/b/c\" // comment",
format("#include \\\n"
" \"a\" // comment\n"
"#include \"a/b/c\" // comment"));
verifyFormat("enum E {\n"
" // comment\n"
" VAL_A, // comment\n"
" VAL_B\n"
"};");
EXPECT_EQ("enum A {\n"
" // line a\n"
" a,\n"
" b, // line b\n"
"\n"
" // line c\n"
" c\n"
"};",
format("enum A {\n"
" // line a\n"
" a,\n"
" b, // line b\n"
"\n"
" // line c\n"
" c\n"
"};",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("enum A {\n"
" a, // line 1\n"
" // line 2\n"
"};",
format("enum A {\n"
" a, // line 1\n"
" // line 2\n"
"};",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("enum A {\n"
" a, // line 1\n"
" // line 2\n"
"};",
format("enum A {\n"
" a, // line 1\n"
" // line 2\n"
"};",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("enum A {\n"
" a, // line 1\n"
" // line 2\n"
" b\n"
"};",
format("enum A {\n"
" a, // line 1\n"
" // line 2\n"
" b\n"
"};",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("enum A {\n"
" a, // line 1\n"
" // line 2\n"
" b\n"
"};",
format("enum A {\n"
" a, // line 1\n"
" // line 2\n"
" b\n"
"};",
getLLVMStyleWithColumns(20)));
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" // Comment inside a statement.\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
verifyFormat("SomeFunction(a,\n"
" // comment\n"
" b + x);");
verifyFormat("SomeFunction(a, a,\n"
" // comment\n"
" b + x);");
verifyFormat(
"bool aaaaaaaaaaaaa = // comment\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat("int aaaa; // aaaaa\n"
"int aa; // aaaaaaa",
getLLVMStyleWithColumns(20));
EXPECT_EQ("void f() { // This does something ..\n"
"}\n"
"int a; // This is unrelated",
format("void f() { // This does something ..\n"
" }\n"
"int a; // This is unrelated"));
EXPECT_EQ("class C {\n"
" void f() { // This does something ..\n"
" } // awesome..\n"
"\n"
" int a; // This is unrelated\n"
"};",
format("class C{void f() { // This does something ..\n"
" } // awesome..\n"
" \n"
"int a; // This is unrelated\n"
"};"));
EXPECT_EQ("int i; // single line trailing comment",
format("int i;\\\n// single line trailing comment"));
verifyGoogleFormat("int a; // Trailing comment.");
verifyFormat("someFunction(anotherFunction( // Force break.\n"
" parameter));");
verifyGoogleFormat("#endif // HEADER_GUARD");
verifyFormat("const char *test[] = {\n"
" // A\n"
" \"aaaa\",\n"
" // B\n"
" \"aaaaa\"};");
verifyGoogleFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaa); // 81_cols_with_this_comment");
EXPECT_EQ("D(a, {\n"
" // test\n"
" int a;\n"
"});",
format("D(a, {\n"
"// test\n"
"int a;\n"
"});"));
EXPECT_EQ("lineWith(); // comment\n"
"// at start\n"
"otherLine();",
format("lineWith(); // comment\n"
"// at start\n"
"otherLine();"));
EXPECT_EQ("lineWith(); // comment\n"
"/*\n"
" * at start */\n"
"otherLine();",
format("lineWith(); // comment\n"
"/*\n"
" * at start */\n"
"otherLine();"));
EXPECT_EQ("lineWith(); // comment\n"
" // at start\n"
"otherLine();",
format("lineWith(); // comment\n"
" // at start\n"
"otherLine();"));
EXPECT_EQ("lineWith(); // comment\n"
"// at start\n"
"otherLine(); // comment",
format("lineWith(); // comment\n"
"// at start\n"
"otherLine(); // comment"));
EXPECT_EQ("lineWith();\n"
"// at start\n"
"otherLine(); // comment",
format("lineWith();\n"
" // at start\n"
"otherLine(); // comment"));
EXPECT_EQ("// first\n"
"// at start\n"
"otherLine(); // comment",
format("// first\n"
" // at start\n"
"otherLine(); // comment"));
EXPECT_EQ("f();\n"
"// first\n"
"// at start\n"
"otherLine(); // comment",
format("f();\n"
"// first\n"
" // at start\n"
"otherLine(); // comment"));
verifyFormat("f(); // comment\n"
"// first\n"
"// at start\n"
"otherLine();");
EXPECT_EQ("f(); // comment\n"
"// first\n"
"// at start\n"
"otherLine();",
format("f(); // comment\n"
"// first\n"
" // at start\n"
"otherLine();"));
EXPECT_EQ("f(); // comment\n"
" // first\n"
"// at start\n"
"otherLine();",
format("f(); // comment\n"
" // first\n"
"// at start\n"
"otherLine();"));
EXPECT_EQ("void f() {\n"
" lineWith(); // comment\n"
" // at start\n"
"}",
format("void f() {\n"
" lineWith(); // comment\n"
" // at start\n"
"}"));
EXPECT_EQ("int xy; // a\n"
"int z; // b",
format("int xy; // a\n"
"int z; //b"));
EXPECT_EQ("int xy; // a\n"
"int z; // bb",
format("int xy; // a\n"
"int z; //bb",
getLLVMStyleWithColumns(12)));
verifyFormat("#define A \\\n"
" int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n"
" int jjjjjjjjjjjjjjjjjjjjjjjj; /* */",
getLLVMStyleWithColumns(60));
verifyFormat(
"#define A \\\n"
" int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n"
" int jjjjjjjjjjjjjjjjjjjjjjjj; /* */",
getLLVMStyleWithColumns(61));
verifyFormat("if ( // This is some comment\n"
" x + 3) {\n"
"}");
EXPECT_EQ("if ( // This is some comment\n"
" // spanning two lines\n"
" x + 3) {\n"
"}",
format("if( // This is some comment\n"
" // spanning two lines\n"
" x + 3) {\n"
"}"));
verifyNoCrash("/\\\n/");
verifyNoCrash("/\\\n* */");
// The 0-character somehow makes the lexer return a proper comment.
verifyNoCrash(StringRef("/*\\\0\n/", 6));
}
TEST_F(FormatTestComments, KeepsParameterWithTrailingCommentsOnTheirOwnLine) {
EXPECT_EQ("SomeFunction(a,\n"
" b, // comment\n"
" c);",
format("SomeFunction(a,\n"
" b, // comment\n"
" c);"));
EXPECT_EQ("SomeFunction(a, b,\n"
" // comment\n"
" c);",
format("SomeFunction(a,\n"
" b,\n"
" // comment\n"
" c);"));
EXPECT_EQ("SomeFunction(a, b, // comment (unclear relation)\n"
" c);",
format("SomeFunction(a, b, // comment (unclear relation)\n"
" c);"));
EXPECT_EQ("SomeFunction(a, // comment\n"
" b,\n"
" c); // comment",
format("SomeFunction(a, // comment\n"
" b,\n"
" c); // comment"));
EXPECT_EQ("aaaaaaaaaa(aaaa(aaaa,\n"
" aaaa), //\n"
" aaaa, bbbbb);",
format("aaaaaaaaaa(aaaa(aaaa,\n"
"aaaa), //\n"
"aaaa, bbbbb);"));
}
TEST_F(FormatTestComments, RemovesTrailingWhitespaceOfComments) {
EXPECT_EQ("// comment", format("// comment "));
EXPECT_EQ("int aaaaaaa, bbbbbbb; // comment",
format("int aaaaaaa, bbbbbbb; // comment ",
getLLVMStyleWithColumns(33)));
EXPECT_EQ("// comment\\\n", format("// comment\\\n \t \v \f "));
EXPECT_EQ("// comment \\\n", format("// comment \\\n \t \v \f "));
}
TEST_F(FormatTestComments, UnderstandsBlockComments) {
verifyFormat("f(/*noSpaceAfterParameterNamingComment=*/true);");
verifyFormat("void f() { g(/*aaa=*/x, /*bbb=*/!y, /*c=*/::c); }");
EXPECT_EQ("f(aaaaaaaaaaaaaaaaaaaaaaaaa, /* Trailing comment for aa... */\n"
" bbbbbbbbbbbbbbbbbbbbbbbbb);",
format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \\\n"
"/* Trailing comment for aa... */\n"
" bbbbbbbbbbbbbbbbbbbbbbbbb);"));
EXPECT_EQ(
"f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" /* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);",
format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \n"
"/* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);"));
EXPECT_EQ(
"void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n"
"}",
format("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaa ,\n"
" aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n"
"}"));
verifyFormat("f(/* aaaaaaaaaaaaaaaaaa = */\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
FormatStyle NoBinPacking = getLLVMStyle();
NoBinPacking.BinPackParameters = false;
verifyFormat("aaaaaaaa(/* parameter 1 */ aaaaaa,\n"
" /* parameter 2 */ aaaaaa,\n"
" /* parameter 3 */ aaaaaa,\n"
" /* parameter 4 */ aaaaaa);",
NoBinPacking);
// Aligning block comments in macros.
verifyGoogleFormat("#define A \\\n"
" int i; /*a*/ \\\n"
" int jjj; /*b*/");
}
TEST_F(FormatTestComments, AlignsBlockComments) {
EXPECT_EQ("/*\n"
" * Really multi-line\n"
" * comment.\n"
" */\n"
"void f() {}",
format(" /*\n"
" * Really multi-line\n"
" * comment.\n"
" */\n"
" void f() {}"));
EXPECT_EQ("class C {\n"
" /*\n"
" * Another multi-line\n"
" * comment.\n"
" */\n"
" void f() {}\n"
"};",
format("class C {\n"
"/*\n"
" * Another multi-line\n"
" * comment.\n"
" */\n"
"void f() {}\n"
"};"));
EXPECT_EQ("/*\n"
" 1. This is a comment with non-trivial formatting.\n"
" 1.1. We have to indent/outdent all lines equally\n"
" 1.1.1. to keep the formatting.\n"
" */",
format(" /*\n"
" 1. This is a comment with non-trivial formatting.\n"
" 1.1. We have to indent/outdent all lines equally\n"
" 1.1.1. to keep the formatting.\n"
" */"));
EXPECT_EQ("/*\n"
"Don't try to outdent if there's not enough indentation.\n"
"*/",
format(" /*\n"
" Don't try to outdent if there's not enough indentation.\n"
" */"));
EXPECT_EQ("int i; /* Comment with empty...\n"
" *\n"
" * line. */",
format("int i; /* Comment with empty...\n"
" *\n"
" * line. */"));
EXPECT_EQ("int foobar = 0; /* comment */\n"
"int bar = 0; /* multiline\n"
" comment 1 */\n"
"int baz = 0; /* multiline\n"
" comment 2 */\n"
"int bzz = 0; /* multiline\n"
" comment 3 */",
format("int foobar = 0; /* comment */\n"
"int bar = 0; /* multiline\n"
" comment 1 */\n"
"int baz = 0; /* multiline\n"
" comment 2 */\n"
"int bzz = 0; /* multiline\n"
" comment 3 */"));
EXPECT_EQ("int foobar = 0; /* comment */\n"
"int bar = 0; /* multiline\n"
" comment */\n"
"int baz = 0; /* multiline\n"
"comment */",
format("int foobar = 0; /* comment */\n"
"int bar = 0; /* multiline\n"
"comment */\n"
"int baz = 0; /* multiline\n"
"comment */"));
}
TEST_F(FormatTestComments, CommentReflowingCanBeTurnedOff) {
FormatStyle Style = getLLVMStyleWithColumns(20);
Style.ReflowComments = false;
verifyFormat("// aaaaaaaaa aaaaaaaaaa aaaaaaaaaa", Style);
verifyFormat("/* aaaaaaaaa aaaaaaaaaa aaaaaaaaaa */", Style);
}
TEST_F(FormatTestComments, CorrectlyHandlesLengthOfBlockComments) {
EXPECT_EQ("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */",
format("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */"));
EXPECT_EQ(
"void ffffffffffff(\n"
" int aaaaaaaa, int bbbbbbbb,\n"
" int cccccccccccc) { /*\n"
" aaaaaaaaaa\n"
" aaaaaaaaaaaaa\n"
" bbbbbbbbbbbbbb\n"
" bbbbbbbbbb\n"
" */\n"
"}",
format("void ffffffffffff(int aaaaaaaa, int bbbbbbbb, int cccccccccccc)\n"
"{ /*\n"
" aaaaaaaaaa aaaaaaaaaaaaa\n"
" bbbbbbbbbbbbbb bbbbbbbbbb\n"
" */\n"
"}",
getLLVMStyleWithColumns(40)));
}
TEST_F(FormatTestComments, DontBreakNonTrailingBlockComments) {
EXPECT_EQ("void ffffffffff(\n"
" int aaaaa /* test */);",
format("void ffffffffff(int aaaaa /* test */);",
getLLVMStyleWithColumns(35)));
}
TEST_F(FormatTestComments, SplitsLongCxxComments) {
EXPECT_EQ("// A comment that\n"
"// doesn't fit on\n"
"// one line",
format("// A comment that doesn't fit on one line",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/// A comment that\n"
"/// doesn't fit on\n"
"/// one line",
format("/// A comment that doesn't fit on one line",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("//! A comment that\n"
"//! doesn't fit on\n"
"//! one line",
format("//! A comment that doesn't fit on one line",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// a b c d\n"
"// e f g\n"
"// h i j k",
format("// a b c d e f g h i j k", getLLVMStyleWithColumns(10)));
EXPECT_EQ(
"// a b c d\n"
"// e f g\n"
"// h i j k",
format("\\\n// a b c d e f g h i j k", getLLVMStyleWithColumns(10)));
EXPECT_EQ("if (true) // A comment that\n"
" // doesn't fit on\n"
" // one line",
format("if (true) // A comment that doesn't fit on one line ",
getLLVMStyleWithColumns(30)));
EXPECT_EQ("// Don't_touch_leading_whitespace",
format("// Don't_touch_leading_whitespace",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// Add leading\n"
"// whitespace",
format("//Add leading whitespace", getLLVMStyleWithColumns(20)));
EXPECT_EQ("/// Add leading\n"
"/// whitespace",
format("///Add leading whitespace", getLLVMStyleWithColumns(20)));
EXPECT_EQ("//! Add leading\n"
"//! whitespace",
format("//!Add leading whitespace", getLLVMStyleWithColumns(20)));
EXPECT_EQ("// whitespace", format("//whitespace", getLLVMStyle()));
EXPECT_EQ("// Even if it makes the line exceed the column\n"
"// limit",
format("//Even if it makes the line exceed the column limit",
getLLVMStyleWithColumns(51)));
EXPECT_EQ("//--But not here", format("//--But not here", getLLVMStyle()));
EXPECT_EQ("/// line 1\n"
"// add leading whitespace",
format("/// line 1\n"
"//add leading whitespace",
getLLVMStyleWithColumns(30)));
EXPECT_EQ("/// line 1\n"
"/// line 2\n"
"//! line 3\n"
"//! line 4\n"
"//! line 5\n"
"// line 6\n"
"// line 7",
format("///line 1\n"
"///line 2\n"
"//! line 3\n"
"//!line 4\n"
"//!line 5\n"
"// line 6\n"
"//line 7", getLLVMStyleWithColumns(20)));
EXPECT_EQ("// aa bb cc dd",
format("// aa bb cc dd ",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("// A comment before\n"
"// a macro\n"
"// definition\n"
"#define a b",
format("// A comment before a macro definition\n"
"#define a b",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("void ffffff(\n"
" int aaaaaaaaa, // wwww\n"
" int bbbbbbbbbb, // xxxxxxx\n"
" // yyyyyyyyyy\n"
" int c, int d, int e) {}",
format("void ffffff(\n"
" int aaaaaaaaa, // wwww\n"
" int bbbbbbbbbb, // xxxxxxx yyyyyyyyyy\n"
" int c, int d, int e) {}",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
format("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
getLLVMStyleWithColumns(20)));
EXPECT_EQ(
"#define XXX // a b c d\n"
" // e f g h",
format("#define XXX // a b c d e f g h", getLLVMStyleWithColumns(22)));
EXPECT_EQ(
"#define XXX // q w e r\n"
" // t y u i",
format("#define XXX //q w e r t y u i", getLLVMStyleWithColumns(22)));
EXPECT_EQ("{\n"
" //\n"
" //\\\n"
" // long 1 2 3 4 5\n"
"}",
format("{\n"
" //\n"
" //\\\n"
" // long 1 2 3 4 5\n"
"}",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("{\n"
" //\n"
" //\\\n"
" // long 1 2 3 4 5\n"
" // 6\n"
"}",
format("{\n"
" //\n"
" //\\\n"
" // long 1 2 3 4 5 6\n"
"}",
getLLVMStyleWithColumns(20)));
}
TEST_F(FormatTestComments, PreservesHangingIndentInCxxComments) {
EXPECT_EQ("// A comment\n"
"// that doesn't\n"
"// fit on one\n"
"// line",
format("// A comment that doesn't fit on one line",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/// A comment\n"
"/// that doesn't\n"
"/// fit on one\n"
"/// line",
format("/// A comment that doesn't fit on one line",
getLLVMStyleWithColumns(20)));
}
TEST_F(FormatTestComments, DontSplitLineCommentsWithEscapedNewlines) {
EXPECT_EQ("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
"// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
"// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
format("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
"// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
"// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"));
EXPECT_EQ("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
format("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
getLLVMStyleWithColumns(50)));
// FIXME: One day we might want to implement adjustment of leading whitespace
// of the consecutive lines in this kind of comment:
EXPECT_EQ("double\n"
" a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
format("double a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
getLLVMStyleWithColumns(49)));
}
TEST_F(FormatTestComments, DontSplitLineCommentsWithPragmas) {
FormatStyle Pragmas = getLLVMStyleWithColumns(30);
Pragmas.CommentPragmas = "^ IWYU pragma:";
EXPECT_EQ(
"// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb",
format("// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", Pragmas));
EXPECT_EQ(
"/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */",
format("/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", Pragmas));
}
TEST_F(FormatTestComments, PriorityOfCommentBreaking) {
EXPECT_EQ("if (xxx ==\n"
" yyy && // aaaaaaaaaaaa bbbbbbbbb\n"
" zzz)\n"
" q();",
format("if (xxx == yyy && // aaaaaaaaaaaa bbbbbbbbb\n"
" zzz) q();",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("if (xxxxxxxxxx ==\n"
" yyy && // aaaaaa bbbbbbbb cccc\n"
" zzz)\n"
" q();",
format("if (xxxxxxxxxx == yyy && // aaaaaa bbbbbbbb cccc\n"
" zzz) q();",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("if (xxxxxxxxxx &&\n"
" yyy || // aaaaaa bbbbbbbb cccc\n"
" zzz)\n"
" q();",
format("if (xxxxxxxxxx && yyy || // aaaaaa bbbbbbbb cccc\n"
" zzz) q();",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("fffffffff(\n"
" &xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n"
" zzz);",
format("fffffffff(&xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n"
" zzz);",
getLLVMStyleWithColumns(40)));
}
TEST_F(FormatTestComments, MultiLineCommentsInDefines) {
EXPECT_EQ("#define A(x) /* \\\n"
" a comment \\\n"
" inside */ \\\n"
" f();",
format("#define A(x) /* \\\n"
" a comment \\\n"
" inside */ \\\n"
" f();",
getLLVMStyleWithColumns(17)));
EXPECT_EQ("#define A( \\\n"
" x) /* \\\n"
" a comment \\\n"
" inside */ \\\n"
" f();",
format("#define A( \\\n"
" x) /* \\\n"
" a comment \\\n"
" inside */ \\\n"
" f();",
getLLVMStyleWithColumns(17)));
}
TEST_F(FormatTestComments, ParsesCommentsAdjacentToPPDirectives) {
EXPECT_EQ("namespace {}\n// Test\n#define A",
format("namespace {}\n // Test\n#define A"));
EXPECT_EQ("namespace {}\n/* Test */\n#define A",
format("namespace {}\n /* Test */\n#define A"));
EXPECT_EQ("namespace {}\n/* Test */ #define A",
format("namespace {}\n /* Test */ #define A"));
}
TEST_F(FormatTestComments, KeepsLevelOfCommentBeforePPDirective) {
// Keep the current level if the comment was originally not aligned with
// the preprocessor directive.
EXPECT_EQ("void f() {\n"
" int i;\n"
" /* comment */\n"
"#ifdef A\n"
" int j;\n"
"}",
format("void f() {\n"
" int i;\n"
" /* comment */\n"
"#ifdef A\n"
" int j;\n"
"}"));
EXPECT_EQ("void f() {\n"
" int i;\n"
" /* comment */\n"
"\n"
"#ifdef A\n"
" int j;\n"
"}",
format("void f() {\n"
" int i;\n"
" /* comment */\n"
"\n"
"#ifdef A\n"
" int j;\n"
"}"));
EXPECT_EQ("int f(int i) {\n"
" if (true) {\n"
" ++i;\n"
" }\n"
" // comment\n"
"#ifdef A\n"
" int j;\n"
"#endif\n"
"}",
format("int f(int i) {\n"
" if (true) {\n"
" ++i;\n"
" }\n"
" // comment\n"
"#ifdef A\n"
"int j;\n"
"#endif\n"
"}"));
EXPECT_EQ("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
" // comment in else\n"
"#ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}",
format("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
" // comment in else\n"
"#ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}"));
EXPECT_EQ("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
" /* comment in else */\n"
"#ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}",
format("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
" /* comment in else */\n"
"#ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}"));
// Keep the current level if there is an empty line between the comment and
// the preprocessor directive.
EXPECT_EQ("void f() {\n"
" int i;\n"
" /* comment */\n"
"\n"
"#ifdef A\n"
" int j;\n"
"}",
format("void f() {\n"
" int i;\n"
"/* comment */\n"
"\n"
"#ifdef A\n"
" int j;\n"
"}"));
EXPECT_EQ("void f() {\n"
" int i;\n"
" return i;\n"
"}\n"
"// comment\n"
"\n"
"#ifdef A\n"
"int i;\n"
"#endif // A",
format("void f() {\n"
" int i;\n"
" return i;\n"
"}\n"
"// comment\n"
"\n"
"#ifdef A\n"
"int i;\n"
"#endif // A"));
EXPECT_EQ("int f(int i) {\n"
" if (true) {\n"
" ++i;\n"
" }\n"
" // comment\n"
"\n"
"#ifdef A\n"
" int j;\n"
"#endif\n"
"}",
format("int f(int i) {\n"
" if (true) {\n"
" ++i;\n"
" }\n"
" // comment\n"
"\n"
"#ifdef A\n"
" int j;\n"
"#endif\n"
"}"));
EXPECT_EQ("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
" // comment in else\n"
"\n"
"#ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}",
format("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
"// comment in else\n"
"\n"
"#ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}"));
EXPECT_EQ("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
" /* comment in else */\n"
"\n"
"#ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}",
format("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
"/* comment in else */\n"
"\n"
"#ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}"));
// Align with the preprocessor directive if the comment was originally aligned
// with the preprocessor directive and there is no newline between the comment
// and the preprocessor directive.
EXPECT_EQ("void f() {\n"
" int i;\n"
"/* comment */\n"
"#ifdef A\n"
" int j;\n"
"}",
format("void f() {\n"
" int i;\n"
"/* comment */\n"
"#ifdef A\n"
" int j;\n"
"}"));
EXPECT_EQ("int f(int i) {\n"
" if (true) {\n"
" ++i;\n"
" }\n"
"// comment\n"
"#ifdef A\n"
" int j;\n"
"#endif\n"
"}",
format("int f(int i) {\n"
" if (true) {\n"
" ++i;\n"
" }\n"
"// comment\n"
"#ifdef A\n"
" int j;\n"
"#endif\n"
"}"));
EXPECT_EQ("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
"// comment in else\n"
"#ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}",
format("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
" // comment in else\n"
" #ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}"));
EXPECT_EQ("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
"/* comment in else */\n"
"#ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}",
format("int f(int i) {\n"
" if (true) {\n"
" i++;\n"
" } else {\n"
" /* comment in else */\n"
" #ifdef A\n"
" j++;\n"
"#endif\n"
" }\n"
"}"));
}
TEST_F(FormatTestComments, SplitsLongLinesInComments) {
// FIXME: Do we need to fix up the " */" at the end?
// It doesn't look like any of our current logic triggers this.
EXPECT_EQ("/* This is a long\n"
" * comment that\n"
" * doesn't fit on\n"
" * one line. */",
format("/* "
"This is a long "
"comment that "
"doesn't "
"fit on one line. */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ(
"/* a b c d\n"
" * e f g\n"
" * h i j k\n"
" */",
format("/* a b c d e f g h i j k */", getLLVMStyleWithColumns(10)));
EXPECT_EQ(
"/* a b c d\n"
" * e f g\n"
" * h i j k\n"
" */",
format("\\\n/* a b c d e f g h i j k */", getLLVMStyleWithColumns(10)));
EXPECT_EQ("/*\n"
"This is a long\n"
"comment that doesn't\n"
"fit on one line.\n"
"*/",
format("/*\n"
"This is a long "
"comment that doesn't "
"fit on one line. \n"
"*/",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/*\n"
" * This is a long\n"
" * comment that\n"
" * doesn't fit on\n"
" * one line.\n"
" */",
format("/* \n"
" * This is a long "
" comment that "
" doesn't fit on "
" one line. \n"
" */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/*\n"
" * This_is_a_comment_with_words_that_dont_fit_on_one_line\n"
" * so_it_should_be_broken\n"
" * wherever_a_space_occurs\n"
" */",
format("/*\n"
" * This_is_a_comment_with_words_that_dont_fit_on_one_line "
" so_it_should_be_broken "
" wherever_a_space_occurs \n"
" */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/*\n"
" * This_comment_can_not_be_broken_into_lines\n"
" */",
format("/*\n"
" * This_comment_can_not_be_broken_into_lines\n"
" */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("{\n"
" /*\n"
" This is another\n"
" long comment that\n"
" doesn't fit on one\n"
" line 1234567890\n"
" */\n"
"}",
format("{\n"
"/*\n"
"This is another "
" long comment that "
" doesn't fit on one"
" line 1234567890\n"
"*/\n"
"}",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("{\n"
" /*\n"
" * This i s\n"
" * another comment\n"
" * t hat doesn' t\n"
" * fit on one l i\n"
" * n e\n"
" */\n"
"}",
format("{\n"
"/*\n"
" * This i s"
" another comment"
" t hat doesn' t"
" fit on one l i"
" n e\n"
" */\n"
"}",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/*\n"
" * This is a long\n"
" * comment that\n"
" * doesn't fit on\n"
" * one line\n"
" */",
format(" /*\n"
" * This is a long comment that doesn't fit on one line\n"
" */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("{\n"
" if (something) /* This is a\n"
" long\n"
" comment */\n"
" ;\n"
"}",
format("{\n"
" if (something) /* This is a long comment */\n"
" ;\n"
"}",
getLLVMStyleWithColumns(30)));
EXPECT_EQ("/* A comment before\n"
" * a macro\n"
" * definition */\n"
"#define a b",
format("/* A comment before a macro definition */\n"
"#define a b",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/* some comment\n"
" * a comment that\n"
" * we break another\n"
" * comment we have\n"
" * to break a left\n"
" * comment\n"
" */",
format(" /* some comment\n"
" * a comment that we break\n"
" * another comment we have to break\n"
"* a left comment\n"
" */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/**\n"
" * multiline block\n"
" * comment\n"
" *\n"
" */",
format("/**\n"
" * multiline block comment\n"
" *\n"
" */",
getLLVMStyleWithColumns(20)));
// This reproduces a crashing bug where both adaptStartOfLine and
// getCommentSplit were trying to wrap after the "/**".
EXPECT_EQ("/** multilineblockcommentwithnowrapopportunity */",
format("/** multilineblockcommentwithnowrapopportunity */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/*\n"
"\n"
"\n"
" */\n",
format(" /* \n"
" \n"
" \n"
" */\n"));
EXPECT_EQ("/* a a */",
format("/* a a */", getLLVMStyleWithColumns(15)));
EXPECT_EQ("/* a a bc */",
format("/* a a bc */", getLLVMStyleWithColumns(15)));
EXPECT_EQ("/* aaa aaa\n"
" * aaaaa */",
format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15)));
EXPECT_EQ("/* aaa aaa\n"
" * aaaaa */",
format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15)));
}
TEST_F(FormatTestComments, SplitsLongLinesInCommentsInPreprocessor) {
EXPECT_EQ("#define X \\\n"
" /* \\\n"
" Test \\\n"
" Macro comment \\\n"
" with a long \\\n"
" line \\\n"
" */ \\\n"
" A + B",
format("#define X \\\n"
" /*\n"
" Test\n"
" Macro comment with a long line\n"
" */ \\\n"
" A + B",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("#define X \\\n"
" /* Macro comment \\\n"
" with a long \\\n"
" line */ \\\n"
" A + B",
format("#define X \\\n"
" /* Macro comment with a long\n"
" line */ \\\n"
" A + B",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("#define X \\\n"
" /* Macro comment \\\n"
" * with a long \\\n"
" * line */ \\\n"
" A + B",
format("#define X \\\n"
" /* Macro comment with a long line */ \\\n"
" A + B",
getLLVMStyleWithColumns(20)));
}
TEST_F(FormatTestComments, KeepsTrailingPPCommentsAndSectionCommentsSeparate) {
verifyFormat("#ifdef A // line about A\n"
"// section comment\n"
"#endif",
getLLVMStyleWithColumns(80));
verifyFormat("#ifdef A // line 1 about A\n"
" // line 2 about A\n"
"// section comment\n"
"#endif",
getLLVMStyleWithColumns(80));
EXPECT_EQ("#ifdef A // line 1 about A\n"
" // line 2 about A\n"
"// section comment\n"
"#endif",
format("#ifdef A // line 1 about A\n"
" // line 2 about A\n"
"// section comment\n"
"#endif",
getLLVMStyleWithColumns(80)));
verifyFormat("int f() {\n"
" int i;\n"
"#ifdef A // comment about A\n"
" // section comment 1\n"
" // section comment 2\n"
" i = 2;\n"
"#else // comment about #else\n"
" // section comment 3\n"
" i = 4;\n"
"#endif\n"
"}", getLLVMStyleWithColumns(80));
}
TEST_F(FormatTestComments, AlignsPPElseEndifComments) {
verifyFormat("#if A\n"
"#else // A\n"
"int iiii;\n"
"#endif // B",
getLLVMStyleWithColumns(20));
verifyFormat("#if A\n"
"#else // A\n"
"int iiii; // CC\n"
"#endif // B",
getLLVMStyleWithColumns(20));
EXPECT_EQ("#if A\n"
"#else // A1\n"
" // A2\n"
"int ii;\n"
"#endif // B",
format("#if A\n"
"#else // A1\n"
" // A2\n"
"int ii;\n"
"#endif // B",
getLLVMStyleWithColumns(20)));
}
TEST_F(FormatTestComments, CommentsInStaticInitializers) {
EXPECT_EQ(
"static SomeType type = {aaaaaaaaaaaaaaaaaaaa, /* comment */\n"
" aaaaaaaaaaaaaaaaaaaa /* comment */,\n"
" /* comment */ aaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaa, // comment\n"
" aaaaaaaaaaaaaaaaaaaa};",
format("static SomeType type = { aaaaaaaaaaaaaaaaaaaa , /* comment */\n"
" aaaaaaaaaaaaaaaaaaaa /* comment */ ,\n"
" /* comment */ aaaaaaaaaaaaaaaaaaaa ,\n"
" aaaaaaaaaaaaaaaaaaaa , // comment\n"
" aaaaaaaaaaaaaaaaaaaa };"));
verifyFormat("static SomeType type = {aaaaaaaaaaa, // comment for aa...\n"
" bbbbbbbbbbb, ccccccccccc};");
verifyFormat("static SomeType type = {aaaaaaaaaaa,\n"
" // comment for bb....\n"
" bbbbbbbbbbb, ccccccccccc};");
verifyGoogleFormat(
"static SomeType type = {aaaaaaaaaaa, // comment for aa...\n"
" bbbbbbbbbbb, ccccccccccc};");
verifyGoogleFormat("static SomeType type = {aaaaaaaaaaa,\n"
" // comment for bb....\n"
" bbbbbbbbbbb, ccccccccccc};");
verifyFormat("S s = {{a, b, c}, // Group #1\n"
" {d, e, f}, // Group #2\n"
" {g, h, i}}; // Group #3");
verifyFormat("S s = {{// Group #1\n"
" a, b, c},\n"
" {// Group #2\n"
" d, e, f},\n"
" {// Group #3\n"
" g, h, i}};");
EXPECT_EQ("S s = {\n"
" // Some comment\n"
" a,\n"
"\n"
" // Comment after empty line\n"
" b}",
format("S s = {\n"
" // Some comment\n"
" a,\n"
" \n"
" // Comment after empty line\n"
" b\n"
"}"));
EXPECT_EQ("S s = {\n"
" /* Some comment */\n"
" a,\n"
"\n"
" /* Comment after empty line */\n"
" b}",
format("S s = {\n"
" /* Some comment */\n"
" a,\n"
" \n"
" /* Comment after empty line */\n"
" b\n"
"}"));
verifyFormat("const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {\n"
" 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
" 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
" 0x00, 0x00, 0x00, 0x00}; // comment\n");
}
TEST_F(FormatTestComments, LineCommentsAfterRightBrace) {
EXPECT_EQ("if (true) { // comment about branch\n"
" // comment about f\n"
" f();\n"
"}",
format("if (true) { // comment about branch\n"
" // comment about f\n"
" f();\n"
"}",
getLLVMStyleWithColumns(80)));
EXPECT_EQ("if (1) { // if line 1\n"
" // if line 2\n"
" // if line 3\n"
" // f line 1\n"
" // f line 2\n"
" f();\n"
"} else { // else line 1\n"
" // else line 2\n"
" // else line 3\n"
" // g line 1\n"
" g();\n"
"}",
format("if (1) { // if line 1\n"
" // if line 2\n"
" // if line 3\n"
" // f line 1\n"
" // f line 2\n"
" f();\n"
"} else { // else line 1\n"
" // else line 2\n"
" // else line 3\n"
" // g line 1\n"
" g();\n"
"}"));
EXPECT_EQ("do { // line 1\n"
" // line 2\n"
" // line 3\n"
" f();\n"
"} while (true);",
format("do { // line 1\n"
" // line 2\n"
" // line 3\n"
" f();\n"
"} while (true);",
getLLVMStyleWithColumns(80)));
EXPECT_EQ("while (a < b) { // line 1\n"
" // line 2\n"
" // line 3\n"
" f();\n"
"}",
format("while (a < b) {// line 1\n"
" // line 2\n"
" // line 3\n"
" f();\n"
"}",
getLLVMStyleWithColumns(80)));
}
TEST_F(FormatTestComments, ReflowsComments) {
// Break a long line and reflow with the full next line.
EXPECT_EQ("// long long long\n"
"// long long",
format("// long long long long\n"
"// long",
getLLVMStyleWithColumns(20)));
// Keep the trailing newline while reflowing.
EXPECT_EQ("// long long long\n"
"// long long\n",
format("// long long long long\n"
"// long\n",
getLLVMStyleWithColumns(20)));
// Break a long line and reflow with a part of the next line.
EXPECT_EQ("// long long long\n"
"// long long\n"
"// long_long",
format("// long long long long\n"
"// long long_long",
getLLVMStyleWithColumns(20)));
// Break but do not reflow if the first word from the next line is too long.
EXPECT_EQ("// long long long\n"
"// long\n"
"// long_long_long\n",
format("// long long long long\n"
"// long_long_long\n",
getLLVMStyleWithColumns(20)));
// Don't break or reflow short lines.
verifyFormat("// long\n"
"// long long long lo\n"
"// long long long lo\n"
"// long",
getLLVMStyleWithColumns(20));
// Keep prefixes and decorations while reflowing.
EXPECT_EQ("/// long long long\n"
"/// long long\n",
format("/// long long long long\n"
"/// long\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("//! long long long\n"
"//! long long\n",
format("//! long long long long\n"
"//! long\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/* long long long\n"
" * long long */",
format("/* long long long long\n"
" * long */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("///< long long long\n"
"///< long long\n",
format("///< long long long long\n"
"///< long\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("//!< long long long\n"
"//!< long long\n",
format("//!< long long long long\n"
"//!< long\n",
getLLVMStyleWithColumns(20)));
// Don't bring leading whitespace up while reflowing.
EXPECT_EQ("/* long long long\n"
" * long long long\n"
" */",
format("/* long long long long\n"
" * long long\n"
" */",
getLLVMStyleWithColumns(20)));
// Reflow the last line of a block comment with its trailing '*/'.
EXPECT_EQ("/* long long long\n"
" long long */",
format("/* long long long long\n"
" long */",
getLLVMStyleWithColumns(20)));
// Reflow two short lines; keep the postfix of the last one.
EXPECT_EQ("/* long long long\n"
" * long long long */",
format("/* long long long long\n"
" * long\n"
" * long */",
getLLVMStyleWithColumns(20)));
// Put the postfix of the last short reflow line on a newline if it doesn't
// fit.
EXPECT_EQ("/* long long long\n"
" * long long longg\n"
" */",
format("/* long long long long\n"
" * long\n"
" * longg */",
getLLVMStyleWithColumns(20)));
// Reflow lines with leading whitespace.
EXPECT_EQ("{\n"
" /*\n"
" * long long long\n"
" * long long long\n"
" * long long long\n"
" */\n"
"}",
format("{\n"
"/*\n"
" * long long long long\n"
" * long\n"
" * long long long long\n"
" */\n"
"}",
getLLVMStyleWithColumns(20)));
// Break single line block comments that are first in the line with ' *'
// decoration.
EXPECT_EQ("/* long long long\n"
" * long */",
format("/* long long long long */", getLLVMStyleWithColumns(20)));
// Break single line block comment that are not first in the line with ' '
// decoration.
EXPECT_EQ("int i; /* long long\n"
" long */",
format("int i; /* long long long */", getLLVMStyleWithColumns(20)));
// Reflow a line that goes just over the column limit.
EXPECT_EQ("// long long long\n"
"// lon long",
format("// long long long lon\n"
"// long",
getLLVMStyleWithColumns(20)));
// Stop reflowing if the next line has a different indentation than the
// previous line.
EXPECT_EQ("// long long long\n"
"// long\n"
"// long long\n"
"// long",
format("// long long long long\n"
"// long long\n"
"// long",
getLLVMStyleWithColumns(20)));
// Reflow into the last part of a really long line that has been broken into
// multiple lines.
EXPECT_EQ("// long long long\n"
"// long long long\n"
"// long long long\n",
format("// long long long long long long long long\n"
"// long\n",
getLLVMStyleWithColumns(20)));
// Break the first line, then reflow the beginning of the second and third
// line up.
EXPECT_EQ("// long long long\n"
"// lon1 lon2 lon2\n"
"// lon2 lon3 lon3",
format("// long long long lon1\n"
"// lon2 lon2 lon2\n"
"// lon3 lon3",
getLLVMStyleWithColumns(20)));
// Reflow the beginning of the second line, then break the rest.
EXPECT_EQ("// long long long\n"
"// lon1 lon2 lon2\n"
"// lon2 lon2 lon2\n"
"// lon3",
format("// long long long lon1\n"
"// lon2 lon2 lon2 lon2 lon2 lon3",
getLLVMStyleWithColumns(20)));
// Shrink the first line, then reflow the second line up.
EXPECT_EQ("// long long long", format("// long long\n"
"// long",
getLLVMStyleWithColumns(20)));
// Don't shrink leading whitespace.
EXPECT_EQ("int i; /// a",
format("int i; /// a", getLLVMStyleWithColumns(20)));
// Shrink trailing whitespace if there is no postfix and reflow.
EXPECT_EQ("// long long long\n"
"// long long",
format("// long long long long \n"
"// long",
getLLVMStyleWithColumns(20)));
// Shrink trailing whitespace to a single one if there is postfix.
EXPECT_EQ("/* long long long */",
format("/* long long long */", getLLVMStyleWithColumns(20)));
// Break a block comment postfix if exceeding the line limit.
EXPECT_EQ("/* long\n"
" */",
format("/* long */", getLLVMStyleWithColumns(20)));
// Reflow indented comments.
EXPECT_EQ("{\n"
" // long long long\n"
" // long long\n"
" int i; /* long lon\n"
" g long\n"
" */\n"
"}",
format("{\n"
" // long long long long\n"
" // long\n"
" int i; /* long lon g\n"
" long */\n"
"}",
getLLVMStyleWithColumns(20)));
// Don't realign trailing comments after reflow has happened.
EXPECT_EQ("// long long long\n"
"// long long\n"
"long i; // long",
format("// long long long long\n"
"// long\n"
"long i; // long",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// long long long\n"
"// longng long long\n"
"// long lo",
format("// long long long longng\n"
"// long long long\n"
"// lo",
getLLVMStyleWithColumns(20)));
// Reflow lines after a broken line.
EXPECT_EQ("int a; // Trailing\n"
" // comment on\n"
" // 2 or 3\n"
" // lines.\n",
format("int a; // Trailing comment\n"
" // on 2\n"
" // or 3\n"
" // lines.\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/// This long line\n"
"/// gets reflown.\n",
format("/// This long line gets\n"
"/// reflown.\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("//! This long line\n"
"//! gets reflown.\n",
format(" //! This long line gets\n"
" //! reflown.\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/* This long line\n"
" * gets reflown.\n"
" */\n",
format("/* This long line gets\n"
" * reflown.\n"
" */\n",
getLLVMStyleWithColumns(20)));
// Reflow after indentation makes a line too long.
EXPECT_EQ("{\n"
" // long long long\n"
" // lo long\n"
"}\n",
format("{\n"
"// long long long lo\n"
"// long\n"
"}\n",
getLLVMStyleWithColumns(20)));
// Break and reflow multiple lines.
EXPECT_EQ("/*\n"
" * Reflow the end of\n"
" * line by 11 22 33\n"
" * 4.\n"
" */\n",
format("/*\n"
" * Reflow the end of line\n"
" * by\n"
" * 11\n"
" * 22\n"
" * 33\n"
" * 4.\n"
" */\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/// First line gets\n"
"/// broken. Second\n"
"/// line gets\n"
"/// reflown and\n"
"/// broken. Third\n"
"/// gets reflown.\n",
format("/// First line gets broken.\n"
"/// Second line gets reflown and broken.\n"
"/// Third gets reflown.\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("int i; // first long\n"
" // long snd\n"
" // long.\n",
format("int i; // first long long\n"
" // snd long.\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("{\n"
" // first long line\n"
" // line second\n"
" // long line line\n"
" // third long line\n"
" // line\n"
"}\n",
format("{\n"
" // first long line line\n"
" // second long line line\n"
" // third long line line\n"
"}\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("int i; /* first line\n"
" * second\n"
" * line third\n"
" * line\n"
" */",
format("int i; /* first line\n"
" * second line\n"
" * third line\n"
" */",
getLLVMStyleWithColumns(20)));
// Reflow the last two lines of a section that starts with a line having
// different indentation.
EXPECT_EQ(
"// long\n"
"// long long long\n"
"// long long",
format("// long\n"
"// long long long long\n"
"// long",
getLLVMStyleWithColumns(20)));
// Keep the block comment endling '*/' while reflowing.
EXPECT_EQ("/* Long long long\n"
" * line short */\n",
format("/* Long long long line\n"
" * short */\n",
getLLVMStyleWithColumns(20)));
// Don't reflow between separate blocks of comments.
EXPECT_EQ("/* First comment\n"
" * block will */\n"
"/* Snd\n"
" */\n",
format("/* First comment block\n"
" * will */\n"
"/* Snd\n"
" */\n",
getLLVMStyleWithColumns(20)));
// Don't reflow across blank comment lines.
EXPECT_EQ("int i; // This long\n"
" // line gets\n"
" // broken.\n"
" //\n"
" // keep.\n",
format("int i; // This long line gets broken.\n"
" // \n"
" // keep.\n",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("{\n"
" /// long long long\n"
" /// long long\n"
" ///\n"
" /// long\n"
"}",
format("{\n"
" /// long long long long\n"
" /// long\n"
" ///\n"
" /// long\n"
"}",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("//! long long long\n"
"//! long\n"
"\n"
"//! long",
format("//! long long long long\n"
"\n"
"//! long",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/* long long long\n"
" long\n"
"\n"
" long */",
format("/* long long long long\n"
"\n"
" long */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/* long long long\n"
" * long\n"
" *\n"
" * long */",
format("/* long long long long\n"
" *\n"
" * long */",
getLLVMStyleWithColumns(20)));
// Don't reflow lines having content that is a single character.
EXPECT_EQ("// long long long\n"
"// long\n"
"// l",
format("// long long long long\n"
"// l",
getLLVMStyleWithColumns(20)));
// Don't reflow lines starting with two punctuation characters.
EXPECT_EQ("// long long long\n"
"// long\n"
"// ... --- ...",
format(
"// long long long long\n"
"// ... --- ...",
getLLVMStyleWithColumns(20)));
// Don't reflow lines starting with '@'.
EXPECT_EQ("// long long long\n"
"// long\n"
"// @param arg",
format("// long long long long\n"
"// @param arg",
getLLVMStyleWithColumns(20)));
// Don't reflow lines starting with 'TODO'.
EXPECT_EQ("// long long long\n"
"// long\n"
"// TODO: long",
format("// long long long long\n"
"// TODO: long",
getLLVMStyleWithColumns(20)));
// Don't reflow lines starting with 'FIXME'.
EXPECT_EQ("// long long long\n"
"// long\n"
"// FIXME: long",
format("// long long long long\n"
"// FIXME: long",
getLLVMStyleWithColumns(20)));
// Don't reflow lines starting with 'XXX'.
EXPECT_EQ("// long long long\n"
"// long\n"
"// XXX: long",
format("// long long long long\n"
"// XXX: long",
getLLVMStyleWithColumns(20)));
// Don't reflow comment pragmas.
EXPECT_EQ("// long long long\n"
"// long\n"
"// IWYU pragma:",
format("// long long long long\n"
"// IWYU pragma:",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/* long long long\n"
" * long\n"
" * IWYU pragma:\n"
" */",
format("/* long long long long\n"
" * IWYU pragma:\n"
" */",
getLLVMStyleWithColumns(20)));
// Reflow lines that have a non-punctuation character among their first 2
// characters.
EXPECT_EQ("// long long long\n"
"// long 'long'",
format(
"// long long long long\n"
"// 'long'",
getLLVMStyleWithColumns(20)));
// Don't reflow between separate blocks of comments.
EXPECT_EQ("/* First comment\n"
" * block will */\n"
"/* Snd\n"
" */\n",
format("/* First comment block\n"
" * will */\n"
"/* Snd\n"
" */\n",
getLLVMStyleWithColumns(20)));
// Don't reflow lines having different indentation.
EXPECT_EQ("// long long long\n"
"// long\n"
"// long",
format("// long long long long\n"
"// long",
getLLVMStyleWithColumns(20)));
// Don't reflow separate bullets in list
EXPECT_EQ("// - long long long\n"
"// long\n"
"// - long",
format("// - long long long long\n"
"// - long",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// * long long long\n"
"// long\n"
"// * long",
format("// * long long long long\n"
"// * long",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// + long long long\n"
"// long\n"
"// + long",
format("// + long long long long\n"
"// + long",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// 1. long long long\n"
"// long\n"
"// 2. long",
format("// 1. long long long long\n"
"// 2. long",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// -# long long long\n"
"// long\n"
"// -# long",
format("// -# long long long long\n"
"// -# long",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// - long long long\n"
"// long long long\n"
"// - long",
format("// - long long long long\n"
"// long long\n"
"// - long",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// - long long long\n"
"// long long long\n"
"// long\n"
"// - long",
format("// - long long long long\n"
"// long long long\n"
"// - long",
getLLVMStyleWithColumns(20)));
// Large number (>2 digits) are not list items
EXPECT_EQ("// long long long\n"
"// long 1024. long.",
format("// long long long long\n"
"// 1024. long.",
getLLVMStyleWithColumns(20)));
// Do not break before number, to avoid introducing a non-reflowable doxygen
// list item.
EXPECT_EQ("// long long\n"
"// long 10. long.",
format("// long long long 10.\n"
"// long.",
getLLVMStyleWithColumns(20)));
// Don't break or reflow after implicit string literals.
verifyFormat("#include <t> // l l l\n"
" // l",
getLLVMStyleWithColumns(20));
// Don't break or reflow comments on import lines.
EXPECT_EQ("#include \"t\" /* l l l\n"
" * l */",
format("#include \"t\" /* l l l\n"
" * l */",
getLLVMStyleWithColumns(20)));
// Don't reflow between different trailing comment sections.
EXPECT_EQ("int i; // long long\n"
" // long\n"
"int j; // long long\n"
" // long\n",
format("int i; // long long long\n"
"int j; // long long long\n",
getLLVMStyleWithColumns(20)));
// Don't reflow if the first word on the next line is longer than the
// available space at current line.
EXPECT_EQ("int i; // trigger\n"
" // reflow\n"
" // longsec\n",
format("int i; // trigger reflow\n"
" // longsec\n",
getLLVMStyleWithColumns(20)));
// Simple case that correctly handles reflow in parameter lists.
EXPECT_EQ("a = f(/* looooooooong\n"
" * long long\n"
" */\n"
" a);",
format("a = f(/* looooooooong long\n* long\n*/ a);",
getLLVMStyleWithColumns(22)));
// Tricky case that has fewer lines if we reflow the comment, ending up with
// fewer lines.
EXPECT_EQ("a = f(/* loooooong\n"
" * long long\n"
" */\n"
" a);",
format("a = f(/* loooooong long\n* long\n*/ a);",
getLLVMStyleWithColumns(22)));
// Keep empty comment lines.
EXPECT_EQ("/**/", format(" /**/", getLLVMStyleWithColumns(20)));
EXPECT_EQ("/* */", format(" /* */", getLLVMStyleWithColumns(20)));
EXPECT_EQ("/* */", format(" /* */", getLLVMStyleWithColumns(20)));
EXPECT_EQ("//", format(" // ", getLLVMStyleWithColumns(20)));
EXPECT_EQ("///", format(" /// ", getLLVMStyleWithColumns(20)));
}
TEST_F(FormatTestComments, ReflowsCommentsPrecise) {
// FIXME: This assumes we do not continue compressing whitespace once we are
// in reflow mode. Consider compressing whitespace.
// Test that we stop reflowing precisely at the column limit.
// After reflowing, "// reflows into foo" does not fit the column limit,
// so we compress the whitespace.
EXPECT_EQ("// some text that\n"
"// reflows into foo\n",
format("// some text that reflows\n"
"// into foo\n",
getLLVMStyleWithColumns(20)));
// Given one more column, "// reflows into foo" does fit the limit, so we
// do not compress the whitespace.
EXPECT_EQ("// some text that\n"
"// reflows into foo\n",
format("// some text that reflows\n"
"// into foo\n",
getLLVMStyleWithColumns(21)));
// Make sure that we correctly account for the space added in the reflow case
// when making the reflowing decision.
// First, when the next line ends precisely one column over the limit, do not
// reflow.
EXPECT_EQ("// some text that\n"
"// reflows\n"
"// into1234567\n",
format("// some text that reflows\n"
"// into1234567\n",
getLLVMStyleWithColumns(21)));
// Secondly, when the next line ends later, but the first word in that line
// is precisely one column over the limit, do not reflow.
EXPECT_EQ("// some text that\n"
"// reflows\n"
"// into1234567 f\n",
format("// some text that reflows\n"
"// into1234567 f\n",
getLLVMStyleWithColumns(21)));
}
TEST_F(FormatTestComments, ReflowsCommentsWithExtraWhitespace) {
// Baseline.
EXPECT_EQ("// some text\n"
"// that re flows\n",
format("// some text that\n"
"// re flows\n",
getLLVMStyleWithColumns(16)));
EXPECT_EQ("// some text\n"
"// that re flows\n",
format("// some text that\n"
"// re flows\n",
getLLVMStyleWithColumns(16)));
EXPECT_EQ("/* some text\n"
" * that re flows\n"
" */\n",
format("/* some text that\n"
"* re flows\n"
"*/\n",
getLLVMStyleWithColumns(16)));
// FIXME: We do not reflow if the indent of two subsequent lines differs;
// given that this is different behavior from block comments, do we want
// to keep this?
EXPECT_EQ("// some text\n"
"// that\n"
"// re flows\n",
format("// some text that\n"
"// re flows\n",
getLLVMStyleWithColumns(16)));
// Space within parts of a line that fit.
// FIXME: Use the earliest possible split while reflowing to compress the
// whitespace within the line.
EXPECT_EQ("// some text that\n"
"// does re flow\n"
"// more here\n",
format("// some text that does\n"
"// re flow more here\n",
getLLVMStyleWithColumns(21)));
}
TEST_F(FormatTestComments, IgnoresIf0Contents) {
EXPECT_EQ("#if 0\n"
"}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n"
"#endif\n"
"void f() {}",
format("#if 0\n"
"}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n"
"#endif\n"
"void f( ) { }"));
EXPECT_EQ("#if false\n"
"void f( ) { }\n"
"#endif\n"
"void g() {}\n",
format("#if false\n"
"void f( ) { }\n"
"#endif\n"
"void g( ) { }\n"));
EXPECT_EQ("enum E {\n"
" One,\n"
" Two,\n"
"#if 0\n"
"Three,\n"
" Four,\n"
"#endif\n"
" Five\n"
"};",
format("enum E {\n"
" One,Two,\n"
"#if 0\n"
"Three,\n"
" Four,\n"
"#endif\n"
" Five};"));
EXPECT_EQ("enum F {\n"
" One,\n"
"#if 1\n"
" Two,\n"
"#if 0\n"
"Three,\n"
" Four,\n"
"#endif\n"
" Five\n"
"#endif\n"
"};",
format("enum F {\n"
"One,\n"
"#if 1\n"
"Two,\n"
"#if 0\n"
"Three,\n"
" Four,\n"
"#endif\n"
"Five\n"
"#endif\n"
"};"));
EXPECT_EQ("enum G {\n"
" One,\n"
"#if 0\n"
"Two,\n"
"#else\n"
" Three,\n"
"#endif\n"
" Four\n"
"};",
format("enum G {\n"
"One,\n"
"#if 0\n"
"Two,\n"
"#else\n"
"Three,\n"
"#endif\n"
"Four\n"
"};"));
EXPECT_EQ("enum H {\n"
" One,\n"
"#if 0\n"
"#ifdef Q\n"
"Two,\n"
"#else\n"
"Three,\n"
"#endif\n"
"#endif\n"
" Four\n"
"};",
format("enum H {\n"
"One,\n"
"#if 0\n"
"#ifdef Q\n"
"Two,\n"
"#else\n"
"Three,\n"
"#endif\n"
"#endif\n"
"Four\n"
"};"));
EXPECT_EQ("enum I {\n"
" One,\n"
"#if /* test */ 0 || 1\n"
"Two,\n"
"Three,\n"
"#endif\n"
" Four\n"
"};",
format("enum I {\n"
"One,\n"
"#if /* test */ 0 || 1\n"
"Two,\n"
"Three,\n"
"#endif\n"
"Four\n"
"};"));
EXPECT_EQ("enum J {\n"
" One,\n"
"#if 0\n"
"#if 0\n"
"Two,\n"
"#else\n"
"Three,\n"
"#endif\n"
"Four,\n"
"#endif\n"
" Five\n"
"};",
format("enum J {\n"
"One,\n"
"#if 0\n"
"#if 0\n"
"Two,\n"
"#else\n"
"Three,\n"
"#endif\n"
"Four,\n"
"#endif\n"
"Five\n"
"};"));
// Ignore stuff in SWIG-blocks.
EXPECT_EQ("#ifdef SWIG\n"
"}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n"
"#endif\n"
"void f() {}",
format("#ifdef SWIG\n"
"}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n"
"#endif\n"
"void f( ) { }"));
EXPECT_EQ("#ifndef SWIG\n"
"void f() {}\n"
"#endif",
format("#ifndef SWIG\n"
"void f( ) { }\n"
"#endif"));
}
TEST_F(FormatTestComments, DontCrashOnBlockComments) {
EXPECT_EQ(
"int xxxxxxxxx; /* "
"yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy\n"
"zzzzzz\n"
"0*/",
format("int xxxxxxxxx; /* "
"yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy zzzzzz\n"
"0*/"));
}
TEST_F(FormatTestComments, BlockCommentsInControlLoops) {
verifyFormat("if (0) /* a comment in a strange place */ {\n"
" f();\n"
"}");
verifyFormat("if (0) /* a comment in a strange place */ {\n"
" f();\n"
"} /* another comment */ else /* comment #3 */ {\n"
" g();\n"
"}");
verifyFormat("while (0) /* a comment in a strange place */ {\n"
" f();\n"
"}");
verifyFormat("for (;;) /* a comment in a strange place */ {\n"
" f();\n"
"}");
verifyFormat("do /* a comment in a strange place */ {\n"
" f();\n"
"} /* another comment */ while (0);");
}
TEST_F(FormatTestComments, BlockComments) {
EXPECT_EQ("/* */ /* */ /* */\n/* */ /* */ /* */",
format("/* *//* */ /* */\n/* *//* */ /* */"));
EXPECT_EQ("/* */ a /* */ b;", format(" /* */ a/* */ b;"));
EXPECT_EQ("#define A /*123*/ \\\n"
" b\n"
"/* */\n"
"someCall(\n"
" parameter);",
format("#define A /*123*/ b\n"
"/* */\n"
"someCall(parameter);",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("#define A\n"
"/* */ someCall(\n"
" parameter);",
format("#define A\n"
"/* */someCall(parameter);",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("/*\n**\n*/", format("/*\n**\n*/"));
EXPECT_EQ("/*\n"
" *\n"
" * aaaaaa\n"
" * aaaaaa\n"
" */",
format("/*\n"
"*\n"
" * aaaaaa aaaaaa\n"
"*/",
getLLVMStyleWithColumns(10)));
EXPECT_EQ("/*\n"
"**\n"
"* aaaaaa\n"
"*aaaaaa\n"
"*/",
format("/*\n"
"**\n"
"* aaaaaa aaaaaa\n"
"*/",
getLLVMStyleWithColumns(10)));
EXPECT_EQ("int aaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" /* line 1\n"
" bbbbbbbbbbbb */\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" /* line 1\n"
" bbbbbbbbbbbb */ bbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
getLLVMStyleWithColumns(50)));
FormatStyle NoBinPacking = getLLVMStyle();
NoBinPacking.BinPackParameters = false;
EXPECT_EQ("someFunction(1, /* comment 1 */\n"
" 2, /* comment 2 */\n"
" 3, /* comment 3 */\n"
" aaaa,\n"
" bbbb);",
format("someFunction (1, /* comment 1 */\n"
" 2, /* comment 2 */ \n"
" 3, /* comment 3 */\n"
"aaaa, bbbb );",
NoBinPacking));
verifyFormat(
"bool aaaaaaaaaaaaa = /* comment: */ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
EXPECT_EQ(
"bool aaaaaaaaaaaaa = /* trailing comment */\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;",
format(
"bool aaaaaaaaaaaaa = /* trailing comment */\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa||aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;"));
EXPECT_EQ(
"int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
"int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n"
"int cccccccccccccccccccccccccccccc; /* comment */\n",
format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
"int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n"
"int cccccccccccccccccccccccccccccc; /* comment */\n"));
verifyFormat("void f(int * /* unused */) {}");
EXPECT_EQ("/*\n"
" **\n"
" */",
format("/*\n"
" **\n"
" */"));
EXPECT_EQ("/*\n"
" *q\n"
" */",
format("/*\n"
" *q\n"
" */"));
EXPECT_EQ("/*\n"
" * q\n"
" */",
format("/*\n"
" * q\n"
" */"));
EXPECT_EQ("/*\n"
" **/",
format("/*\n"
" **/"));
EXPECT_EQ("/*\n"
" ***/",
format("/*\n"
" ***/"));
}
TEST_F(FormatTestComments, BlockCommentsInMacros) {
EXPECT_EQ("#define A \\\n"
" { \\\n"
" /* one line */ \\\n"
" someCall();",
format("#define A { \\\n"
" /* one line */ \\\n"
" someCall();",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("#define A \\\n"
" { \\\n"
" /* previous */ \\\n"
" /* one line */ \\\n"
" someCall();",
format("#define A { \\\n"
" /* previous */ \\\n"
" /* one line */ \\\n"
" someCall();",
getLLVMStyleWithColumns(20)));
}
TEST_F(FormatTestComments, BlockCommentsAtEndOfLine) {
EXPECT_EQ("a = {\n"
" 1111 /* */\n"
"};",
format("a = {1111 /* */\n"
"};",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("a = {\n"
" 1111 /* */\n"
"};",
format("a = {1111 /* */\n"
"};",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("a = {\n"
" 1111 /* a\n"
" */\n"
"};",
format("a = {1111 /* a */\n"
"};",
getLLVMStyleWithColumns(15)));
}
TEST_F(FormatTestComments, BreaksAfterMultilineBlockCommentsInParamLists) {
EXPECT_EQ("a = f(/* long\n"
" long */\n"
" a);",
format("a = f(/* long long */ a);", getLLVMStyleWithColumns(16)));
EXPECT_EQ("a = f(\n"
" /* long\n"
" long */\n"
" a);",
format("a = f(/* long long */ a);", getLLVMStyleWithColumns(15)));
EXPECT_EQ("a = f(/* long\n"
" long\n"
" */\n"
" a);",
format("a = f(/* long\n"
" long\n"
" */a);",
getLLVMStyleWithColumns(16)));
EXPECT_EQ("a = f(/* long\n"
" long\n"
" */\n"
" a);",
format("a = f(/* long\n"
" long\n"
" */ a);",
getLLVMStyleWithColumns(16)));
EXPECT_EQ("a = f(/* long\n"
" long\n"
" */\n"
" (1 + 1));",
format("a = f(/* long\n"
" long\n"
" */ (1 + 1));",
getLLVMStyleWithColumns(16)));
EXPECT_EQ(
"a = f(a,\n"
" /* long\n"
" long */\n"
" b);",
format("a = f(a, /* long long */ b);", getLLVMStyleWithColumns(16)));
EXPECT_EQ(
"a = f(\n"
" a,\n"
" /* long\n"
" long */\n"
" b);",
format("a = f(a, /* long long */ b);", getLLVMStyleWithColumns(15)));
EXPECT_EQ("a = f(a,\n"
" /* long\n"
" long */\n"
" (1 + 1));",
format("a = f(a, /* long long */ (1 + 1));",
getLLVMStyleWithColumns(16)));
EXPECT_EQ("a = f(\n"
" a,\n"
" /* long\n"
" long */\n"
" (1 + 1));",
format("a = f(a, /* long long */ (1 + 1));",
getLLVMStyleWithColumns(15)));
}
TEST_F(FormatTestComments, IndentLineCommentsInStartOfBlockAtEndOfFile) {
verifyFormat("{\n"
" // a\n"
" // b");
}
TEST_F(FormatTestComments, AlignTrailingComments) {
EXPECT_EQ("#define MACRO(V) \\\n"
" V(Rt2) /* one more char */ \\\n"
" V(Rs) /* than here */ \\\n"
"/* comment 3 */\n",
format("#define MACRO(V)\\\n"
"V(Rt2) /* one more char */ \\\n"
"V(Rs) /* than here */ \\\n"
"/* comment 3 */\n",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("int i = f(abc, // line 1\n"
" d, // line 2\n"
" // line 3\n"
" b);",
format("int i = f(abc, // line 1\n"
" d, // line 2\n"
" // line 3\n"
" b);",
getLLVMStyleWithColumns(40)));
// Align newly broken trailing comments.
EXPECT_EQ("int ab; // line\n"
"int a; // long\n"
" // long\n",
format("int ab; // line\n"
"int a; // long long\n",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("int ab; // line\n"
"int a; // long\n"
" // long\n"
" // long",
format("int ab; // line\n"
"int a; // long long\n"
" // long",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("int ab; // line\n"
"int a; // long\n"
" // long\n"
"pt c; // long",
format("int ab; // line\n"
"int a; // long long\n"
"pt c; // long",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("int ab; // line\n"
"int a; // long\n"
" // long\n"
"\n"
"// long",
format("int ab; // line\n"
"int a; // long long\n"
"\n"
"// long",
getLLVMStyleWithColumns(15)));
// Don't align newly broken trailing comments if that would put them over the
// column limit.
EXPECT_EQ("int i, j; // line 1\n"
"int k; // line longg\n"
" // long",
format("int i, j; // line 1\n"
"int k; // line longg long",
getLLVMStyleWithColumns(20)));
// Always align if ColumnLimit = 0
EXPECT_EQ("int i, j; // line 1\n"
"int k; // line longg long",
format("int i, j; // line 1\n"
"int k; // line longg long",
getLLVMStyleWithColumns(0)));
// Align comment line sections aligned with the next token with the next
// token.
EXPECT_EQ("class A {\n"
"public: // public comment\n"
" // comment about a\n"
" int a;\n"
"};",
format("class A {\n"
"public: // public comment\n"
" // comment about a\n"
" int a;\n"
"};",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("class A {\n"
"public: // public comment 1\n"
" // public comment 2\n"
" // comment 1 about a\n"
" // comment 2 about a\n"
" int a;\n"
"};",
format("class A {\n"
"public: // public comment 1\n"
" // public comment 2\n"
" // comment 1 about a\n"
" // comment 2 about a\n"
" int a;\n"
"};",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("int f(int n) { // comment line 1 on f\n"
" // comment line 2 on f\n"
" // comment line 1 before return\n"
" // comment line 2 before return\n"
" return n; // comment line 1 on return\n"
" // comment line 2 on return\n"
" // comment line 1 after return\n"
"}",
format("int f(int n) { // comment line 1 on f\n"
" // comment line 2 on f\n"
" // comment line 1 before return\n"
" // comment line 2 before return\n"
" return n; // comment line 1 on return\n"
" // comment line 2 on return\n"
" // comment line 1 after return\n"
"}",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("int f(int n) {\n"
" switch (n) { // comment line 1 on switch\n"
" // comment line 2 on switch\n"
" // comment line 1 before case 1\n"
" // comment line 2 before case 1\n"
" case 1: // comment line 1 on case 1\n"
" // comment line 2 on case 1\n"
" // comment line 1 before return 1\n"
" // comment line 2 before return 1\n"
" return 1; // comment line 1 on return 1\n"
" // comment line 2 on return 1\n"
" // comment line 1 before default\n"
" // comment line 2 before default\n"
" default: // comment line 1 on default\n"
" // comment line 2 on default\n"
" // comment line 1 before return 2\n"
" return 2 * f(n - 1); // comment line 1 on return 2\n"
" // comment line 2 on return 2\n"
" // comment line 1 after return\n"
" // comment line 2 after return\n"
" }\n"
"}",
format("int f(int n) {\n"
" switch (n) { // comment line 1 on switch\n"
" // comment line 2 on switch\n"
" // comment line 1 before case 1\n"
" // comment line 2 before case 1\n"
" case 1: // comment line 1 on case 1\n"
" // comment line 2 on case 1\n"
" // comment line 1 before return 1\n"
" // comment line 2 before return 1\n"
" return 1; // comment line 1 on return 1\n"
" // comment line 2 on return 1\n"
" // comment line 1 before default\n"
" // comment line 2 before default\n"
" default: // comment line 1 on default\n"
" // comment line 2 on default\n"
" // comment line 1 before return 2\n"
" return 2 * f(n - 1); // comment line 1 on return 2\n"
" // comment line 2 on return 2\n"
" // comment line 1 after return\n"
" // comment line 2 after return\n"
" }\n"
"}",
getLLVMStyleWithColumns(80)));
// If all the lines in a sequence of line comments are aligned with the next
// token, the first line belongs to the previous token and the other lines
// belong to the next token.
EXPECT_EQ("int a; // line about a\n"
"long b;",
format("int a; // line about a\n"
" long b;",
getLLVMStyleWithColumns(80)));
EXPECT_EQ("int a; // line about a\n"
"// line about b\n"
"long b;",
format("int a; // line about a\n"
" // line about b\n"
" long b;",
getLLVMStyleWithColumns(80)));
EXPECT_EQ("int a; // line about a\n"
"// line 1 about b\n"
"// line 2 about b\n"
"long b;",
format("int a; // line about a\n"
" // line 1 about b\n"
" // line 2 about b\n"
" long b;",
getLLVMStyleWithColumns(80)));
}
TEST_F(FormatTestComments, AlignsBlockCommentDecorations) {
EXPECT_EQ("/*\n"
" */",
format("/*\n"
"*/", getLLVMStyle()));
EXPECT_EQ("/*\n"
" */",
format("/*\n"
" */", getLLVMStyle()));
EXPECT_EQ("/*\n"
" */",
format("/*\n"
" */", getLLVMStyle()));
// Align a single line.
EXPECT_EQ("/*\n"
" * line */",
format("/*\n"
"* line */",
getLLVMStyle()));
EXPECT_EQ("/*\n"
" * line */",
format("/*\n"
" * line */",
getLLVMStyle()));
EXPECT_EQ("/*\n"
" * line */",
format("/*\n"
" * line */",
getLLVMStyle()));
EXPECT_EQ("/*\n"
" * line */",
format("/*\n"
" * line */",
getLLVMStyle()));
EXPECT_EQ("/**\n"
" * line */",
format("/**\n"
"* line */",
getLLVMStyle()));
EXPECT_EQ("/**\n"
" * line */",
format("/**\n"
" * line */",
getLLVMStyle()));
EXPECT_EQ("/**\n"
" * line */",
format("/**\n"
" * line */",
getLLVMStyle()));
EXPECT_EQ("/**\n"
" * line */",
format("/**\n"
" * line */",
getLLVMStyle()));
EXPECT_EQ("/**\n"
" * line */",
format("/**\n"
" * line */",
getLLVMStyle()));
// Align the end '*/' after a line.
EXPECT_EQ("/*\n"
" * line\n"
" */",
format("/*\n"
"* line\n"
"*/", getLLVMStyle()));
EXPECT_EQ("/*\n"
" * line\n"
" */",
format("/*\n"
" * line\n"
" */", getLLVMStyle()));
EXPECT_EQ("/*\n"
" * line\n"
" */",
format("/*\n"
" * line\n"
" */", getLLVMStyle()));
// Align two lines.
EXPECT_EQ("/* line 1\n"
" * line 2 */",
format("/* line 1\n"
" * line 2 */",
getLLVMStyle()));
EXPECT_EQ("/* line 1\n"
" * line 2 */",
format("/* line 1\n"
"* line 2 */",
getLLVMStyle()));
EXPECT_EQ("/* line 1\n"
" * line 2 */",
format("/* line 1\n"
" * line 2 */",
getLLVMStyle()));
EXPECT_EQ("/* line 1\n"
" * line 2 */",
format("/* line 1\n"
" * line 2 */",
getLLVMStyle()));
EXPECT_EQ("/* line 1\n"
" * line 2 */",
format("/* line 1\n"
" * line 2 */",
getLLVMStyle()));
EXPECT_EQ("int i; /* line 1\n"
" * line 2 */",
format("int i; /* line 1\n"
"* line 2 */",
getLLVMStyle()));
EXPECT_EQ("int i; /* line 1\n"
" * line 2 */",
format("int i; /* line 1\n"
" * line 2 */",
getLLVMStyle()));
EXPECT_EQ("int i; /* line 1\n"
" * line 2 */",
format("int i; /* line 1\n"
" * line 2 */",
getLLVMStyle()));
// Align several lines.
EXPECT_EQ("/* line 1\n"
" * line 2\n"
" * line 3 */",
format("/* line 1\n"
" * line 2\n"
"* line 3 */",
getLLVMStyle()));
EXPECT_EQ("/* line 1\n"
" * line 2\n"
" * line 3 */",
format("/* line 1\n"
" * line 2\n"
"* line 3 */",
getLLVMStyle()));
EXPECT_EQ("/*\n"
"** line 1\n"
"** line 2\n"
"*/",
format("/*\n"
"** line 1\n"
" ** line 2\n"
"*/",
getLLVMStyle()));
// Align with different indent after the decorations.
EXPECT_EQ("/*\n"
" * line 1\n"
" * line 2\n"
" * line 3\n"
" * line 4\n"
" */",
format("/*\n"
"* line 1\n"
" * line 2\n"
" * line 3\n"
"* line 4\n"
"*/", getLLVMStyle()));
// Align empty or blank lines.
EXPECT_EQ("/**\n"
" *\n"
" *\n"
" *\n"
" */",
format("/**\n"
"* \n"
" * \n"
" *\n"
"*/", getLLVMStyle()));
// Align while breaking and reflowing.
EXPECT_EQ("/*\n"
" * long long long\n"
" * long long\n"
" *\n"
" * long */",
format("/*\n"
" * long long long long\n"
" * long\n"
" *\n"
"* long */",
getLLVMStyleWithColumns(20)));
}
TEST_F(FormatTestComments, NoCrash_Bug34236) {
// This is a test case from a crasher reported in:
// https://bugs.llvm.org/show_bug.cgi?id=34236
// Temporarily disable formatting for readability.
// clang-format off
EXPECT_EQ(
"/* */ /*\n"
" * a\n"
" * b c d*/",
format(
"/* */ /*\n"
" * a b\n"
" * c d*/",
getLLVMStyleWithColumns(80)));
// clang-format on
}
TEST_F(FormatTestComments, NonTrailingBlockComments) {
verifyFormat("const /** comment comment */ A = B;",
getLLVMStyleWithColumns(40));
verifyFormat("const /** comment comment comment */ A =\n"
" B;",
getLLVMStyleWithColumns(40));
EXPECT_EQ("const /** comment comment comment\n"
" comment */\n"
" A = B;",
format("const /** comment comment comment comment */\n"
" A = B;",
getLLVMStyleWithColumns(40)));
}
TEST_F(FormatTestComments, PythonStyleComments) {
// Keeps a space after '#'.
EXPECT_EQ("# comment\n"
"key: value",
format("#comment\n"
"key:value",
getTextProtoStyleWithColumns(20)));
EXPECT_EQ("# comment\n"
"key: value",
format("# comment\n"
"key:value",
getTextProtoStyleWithColumns(20)));
// Breaks long comment.
EXPECT_EQ("# comment comment\n"
"# comment\n"
"key: value",
format("# comment comment comment\n"
"key:value",
getTextProtoStyleWithColumns(20)));
// Indents comments.
EXPECT_EQ("data {\n"
" # comment comment\n"
" # comment\n"
" key: value\n"
"}",
format("data {\n"
"# comment comment comment\n"
"key: value}",
getTextProtoStyleWithColumns(20)));
EXPECT_EQ("data {\n"
" # comment comment\n"
" # comment\n"
" key: value\n"
"}",
format("data {# comment comment comment\n"
"key: value}",
getTextProtoStyleWithColumns(20)));
// Reflows long comments.
EXPECT_EQ("# comment comment\n"
"# comment comment\n"
"key: value",
format("# comment comment comment\n"
"# comment\n"
"key:value",
getTextProtoStyleWithColumns(20)));
// Breaks trailing comments.
EXPECT_EQ("k: val # comment\n"
" # comment\n"
"a: 1",
format("k:val#comment comment\n"
"a:1",
getTextProtoStyleWithColumns(20)));
EXPECT_EQ("id {\n"
" k: val # comment\n"
" # comment\n"
" # line line\n"
" a: 1\n"
"}",
format("id {k:val#comment comment\n"
"# line line\n"
"a:1}",
getTextProtoStyleWithColumns(20)));
// Aligns trailing comments.
EXPECT_EQ("k: val # commen1\n"
" # commen2\n"
" # commen3\n"
"# commen4\n"
"a: 1 # commen5\n"
" # commen6\n"
" # commen7",
format("k:val#commen1 commen2\n"
" # commen3\n"
"# commen4\n"
"a:1#commen5 commen6\n"
" #commen7",
getTextProtoStyleWithColumns(20)));
}
TEST_F(FormatTestComments, BreaksBeforeTrailingUnbreakableSequence) {
// The end of /* trail */ is exactly at 80 columns, but the unbreakable
// trailing sequence ); after it exceeds the column limit. Make sure we
// correctly break the line in that case.
verifyFormat("int a =\n"
" foo(/* trail */);",
getLLVMStyleWithColumns(23));
}
TEST_F(FormatTestComments, ReflowBackslashCrash) {
// clang-format off
EXPECT_EQ(
"// How to run:\n"
"// bbbbb run \\\n"
"// rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr\n"
"// \\ <log_file> -- --output_directory=\"<output_directory>\"",
format(
"// How to run:\n"
"// bbbbb run \\\n"
"// rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr \\\n"
"// <log_file> -- --output_directory=\"<output_directory>\""));
// clang-format on
}
TEST_F(FormatTestComments, IndentsLongJavadocAnnotatedLines) {
FormatStyle Style = getGoogleStyle(FormatStyle::LK_Java);
Style.ColumnLimit = 60;
FormatStyle Style20 = getGoogleStyle(FormatStyle::LK_Java);
Style20.ColumnLimit = 20;
EXPECT_EQ(
"/**\n"
" * @param x long long long long long long long long long\n"
" * long\n"
" */\n",
format("/**\n"
" * @param x long long long long long long long long long long\n"
" */\n",
Style));
EXPECT_EQ("/**\n"
" * @param x long long long long long long long long long\n"
" * long long long long long long long long long long\n"
" */\n",
format("/**\n"
" * @param x long long long long long long long long long "
"long long long long long long long long long long\n"
" */\n",
Style));
EXPECT_EQ("/**\n"
" * @param x long long long long long long long long long\n"
" * long long long long long long long long long long\n"
" * long\n"
" */\n",
format("/**\n"
" * @param x long long long long long long long long long "
"long long long long long long long long long long long\n"
" */\n",
Style));
EXPECT_EQ(
"/**\n"
" * Sentence that\n"
" * should be broken.\n"
" * @param short\n"
" * keep indentation\n"
" */\n", format(
"/**\n"
" * Sentence that should be broken.\n"
" * @param short\n"
" * keep indentation\n"
" */\n", Style20));
EXPECT_EQ("/**\n"
" * @param l1 long1\n"
" * to break\n"
" * @param l2 long2\n"
" * to break\n"
" */\n",
format("/**\n"
" * @param l1 long1 to break\n"
" * @param l2 long2 to break\n"
" */\n",
Style20));
EXPECT_EQ("/**\n"
" * @param xx to\n"
" * break\n"
" * no reflow\n"
" */\n",
format("/**\n"
" * @param xx to break\n"
" * no reflow\n"
" */\n",
Style20));
EXPECT_EQ("/**\n"
" * @param xx to\n"
" * break yes\n"
" * reflow\n"
" */\n",
format("/**\n"
" * @param xx to break\n"
" * yes reflow\n"
" */\n",
Style20));
FormatStyle JSStyle20 = getGoogleStyle(FormatStyle::LK_JavaScript);
JSStyle20.ColumnLimit = 20;
EXPECT_EQ("/**\n"
" * @param l1 long1\n"
" * to break\n"
" */\n",
format("/**\n"
" * @param l1 long1 to break\n"
" */\n",
JSStyle20));
EXPECT_EQ("/**\n"
" * @param {l1 long1\n"
" * to break}\n"
" */\n",
format("/**\n"
" * @param {l1 long1 to break}\n"
" */\n",
JSStyle20));
}
} // end namespace
} // end namespace format
} // end namespace clang
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