teak-llvm/clang/unittests/Tooling/RefactoringTest.cpp
Jonas Devlieghere fc51490baf Lift VFS from clang to llvm (NFC)
This patch moves the virtual file system form clang to llvm so it can be
used by more projects.

Concretely the patch:
 - Moves VirtualFileSystem.{h|cpp} from clang/Basic to llvm/Support.
 - Moves the corresponding unit test from clang to llvm.
 - Moves the vfs namespace from clang::vfs to llvm::vfs.
 - Formats the lines affected by this change, mostly this is the result of
   the added llvm namespace.

RFC on the mailing list:
http://lists.llvm.org/pipermail/llvm-dev/2018-October/126657.html

Differential revision: https://reviews.llvm.org/D52783

llvm-svn: 344140
2018-10-10 13:27:25 +00:00

1722 lines
64 KiB
C++

//===- unittest/Tooling/RefactoringTest.cpp - Refactoring 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/Tooling/Refactoring.h"
#include "ReplacementTest.h"
#include "RewriterTestContext.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclGroup.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Format/Format.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FrontendAction.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Rewrite/Core/Rewriter.h"
#include "clang/Tooling/Refactoring/AtomicChange.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "gtest/gtest.h"
namespace clang {
namespace tooling {
TEST_F(ReplacementTest, CanDeleteAllText) {
FileID ID = Context.createInMemoryFile("input.cpp", "text");
SourceLocation Location = Context.getLocation(ID, 1, 1);
Replacement Replace(createReplacement(Location, 4, ""));
EXPECT_TRUE(Replace.apply(Context.Rewrite));
EXPECT_EQ("", Context.getRewrittenText(ID));
}
TEST_F(ReplacementTest, CanDeleteAllTextInTextWithNewlines) {
FileID ID = Context.createInMemoryFile("input.cpp", "line1\nline2\nline3");
SourceLocation Location = Context.getLocation(ID, 1, 1);
Replacement Replace(createReplacement(Location, 17, ""));
EXPECT_TRUE(Replace.apply(Context.Rewrite));
EXPECT_EQ("", Context.getRewrittenText(ID));
}
TEST_F(ReplacementTest, CanAddText) {
FileID ID = Context.createInMemoryFile("input.cpp", "");
SourceLocation Location = Context.getLocation(ID, 1, 1);
Replacement Replace(createReplacement(Location, 0, "result"));
EXPECT_TRUE(Replace.apply(Context.Rewrite));
EXPECT_EQ("result", Context.getRewrittenText(ID));
}
TEST_F(ReplacementTest, CanReplaceTextAtPosition) {
FileID ID = Context.createInMemoryFile("input.cpp",
"line1\nline2\nline3\nline4");
SourceLocation Location = Context.getLocation(ID, 2, 3);
Replacement Replace(createReplacement(Location, 12, "x"));
EXPECT_TRUE(Replace.apply(Context.Rewrite));
EXPECT_EQ("line1\nlixne4", Context.getRewrittenText(ID));
}
TEST_F(ReplacementTest, CanReplaceTextAtPositionMultipleTimes) {
FileID ID = Context.createInMemoryFile("input.cpp",
"line1\nline2\nline3\nline4");
SourceLocation Location1 = Context.getLocation(ID, 2, 3);
Replacement Replace1(createReplacement(Location1, 12, "x\ny\n"));
EXPECT_TRUE(Replace1.apply(Context.Rewrite));
EXPECT_EQ("line1\nlix\ny\nne4", Context.getRewrittenText(ID));
// Since the original source has not been modified, the (4, 4) points to the
// 'e' in the original content.
SourceLocation Location2 = Context.getLocation(ID, 4, 4);
Replacement Replace2(createReplacement(Location2, 1, "f"));
EXPECT_TRUE(Replace2.apply(Context.Rewrite));
EXPECT_EQ("line1\nlix\ny\nnf4", Context.getRewrittenText(ID));
}
TEST_F(ReplacementTest, ApplyFailsForNonExistentLocation) {
Replacement Replace("nonexistent-file.cpp", 0, 1, "");
EXPECT_FALSE(Replace.apply(Context.Rewrite));
}
TEST_F(ReplacementTest, CanRetrivePath) {
Replacement Replace("/path/to/file.cpp", 0, 1, "");
EXPECT_EQ("/path/to/file.cpp", Replace.getFilePath());
}
TEST_F(ReplacementTest, ReturnsInvalidPath) {
Replacement Replace1(Context.Sources, SourceLocation(), 0, "");
EXPECT_TRUE(Replace1.getFilePath().empty());
Replacement Replace2;
EXPECT_TRUE(Replace2.getFilePath().empty());
}
// Checks that an llvm::Error instance contains a ReplacementError with expected
// error code, expected new replacement, and expected existing replacement.
static bool checkReplacementError(llvm::Error &&Error,
replacement_error ExpectedErr,
llvm::Optional<Replacement> ExpectedExisting,
llvm::Optional<Replacement> ExpectedNew) {
if (!Error) {
llvm::errs() << "Error is a success.";
return false;
}
std::string ErrorMessage;
llvm::raw_string_ostream OS(ErrorMessage);
llvm::handleAllErrors(std::move(Error), [&](const ReplacementError &RE) {
llvm::errs() << "Handling error...\n";
if (ExpectedErr != RE.get())
OS << "Unexpected error code: " << int(RE.get()) << "\n";
if (ExpectedExisting != RE.getExistingReplacement()) {
OS << "Expected Existing != Actual Existing.\n";
if (ExpectedExisting.hasValue())
OS << "Expected existing replacement: " << ExpectedExisting->toString()
<< "\n";
if (RE.getExistingReplacement().hasValue())
OS << "Actual existing replacement: "
<< RE.getExistingReplacement()->toString() << "\n";
}
if (ExpectedNew != RE.getNewReplacement()) {
OS << "Expected New != Actual New.\n";
if (ExpectedNew.hasValue())
OS << "Expected new replacement: " << ExpectedNew->toString() << "\n";
if (RE.getNewReplacement().hasValue())
OS << "Actual new replacement: " << RE.getNewReplacement()->toString()
<< "\n";
}
});
OS.flush();
if (ErrorMessage.empty()) return true;
llvm::errs() << ErrorMessage;
return false;
}
TEST_F(ReplacementTest, FailAddReplacements) {
Replacements Replaces;
Replacement Deletion("x.cc", 0, 10, "3");
auto Err = Replaces.add(Deletion);
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Replacement OverlappingReplacement("x.cc", 0, 2, "a");
Err = Replaces.add(OverlappingReplacement);
EXPECT_TRUE(checkReplacementError(std::move(Err),
replacement_error::overlap_conflict,
Deletion, OverlappingReplacement));
Replacement ContainedReplacement("x.cc", 2, 2, "a");
Err = Replaces.add(Replacement(ContainedReplacement));
EXPECT_TRUE(checkReplacementError(std::move(Err),
replacement_error::overlap_conflict,
Deletion, ContainedReplacement));
Replacement WrongPathReplacement("y.cc", 20, 2, "");
Err = Replaces.add(WrongPathReplacement);
EXPECT_TRUE(checkReplacementError(std::move(Err),
replacement_error::wrong_file_path,
Deletion, WrongPathReplacement));
EXPECT_EQ(1u, Replaces.size());
EXPECT_EQ(Deletion, *Replaces.begin());
}
TEST_F(ReplacementTest, DeletionInReplacements) {
Replacements Replaces;
Replacement R("x.cc", 0, 10, "3");
auto Err = Replaces.add(R);
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 0, 2, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 2, 2, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(1u, Replaces.size());
EXPECT_EQ(R, *Replaces.begin());
}
TEST_F(ReplacementTest, OverlappingReplacements) {
Replacements Replaces;
auto Err = Replaces.add(Replacement("x.cc", 0, 3, "345"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 2, 3, "543"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(1u, Replaces.size());
EXPECT_EQ(Replacement("x.cc", 0, 5, "34543"), *Replaces.begin());
Err = Replaces.add(Replacement("x.cc", 2, 1, "5"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(1u, Replaces.size());
EXPECT_EQ(Replacement("x.cc", 0, 5, "34543"), *Replaces.begin());
}
TEST_F(ReplacementTest, AddAdjacentInsertionAndReplacement) {
Replacements Replaces;
// Test adding an insertion at the offset of an existing replacement.
auto Err = Replaces.add(Replacement("x.cc", 10, 3, "replace"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 10, 0, "insert"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(Replaces.size(), 2u);
Replaces.clear();
// Test overlap with an existing insertion.
Err = Replaces.add(Replacement("x.cc", 10, 0, "insert"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 10, 3, "replace"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(Replaces.size(), 2u);
}
TEST_F(ReplacementTest, MergeNewDeletions) {
Replacements Replaces;
Replacement ContainingReplacement("x.cc", 0, 10, "");
auto Err = Replaces.add(ContainingReplacement);
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 5, 3, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 0, 10, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 5, 5, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(1u, Replaces.size());
EXPECT_EQ(*Replaces.begin(), ContainingReplacement);
}
TEST_F(ReplacementTest, MergeOverlappingButNotAdjacentReplacement) {
Replacements Replaces;
auto Err = Replaces.add(Replacement("x.cc", 0, 2, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 5, 5, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Replacement After = Replacement("x.cc", 10, 5, "");
Err = Replaces.add(After);
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Replacement ContainingReplacement("x.cc", 0, 10, "");
Err = Replaces.add(ContainingReplacement);
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(2u, Replaces.size());
EXPECT_EQ(*Replaces.begin(), ContainingReplacement);
EXPECT_EQ(*(++Replaces.begin()), After);
}
TEST_F(ReplacementTest, InsertionBeforeMergedDeletions) {
Replacements Replaces;
Replacement Insertion("x.cc", 0, 0, "123");
auto Err = Replaces.add(Insertion);
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 5, 5, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Replacement Deletion("x.cc", 0, 10, "");
Err = Replaces.add(Deletion);
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(2u, Replaces.size());
EXPECT_EQ(*Replaces.begin(), Insertion);
EXPECT_EQ(*(++Replaces.begin()), Deletion);
}
TEST_F(ReplacementTest, MergeOverlappingDeletions) {
Replacements Replaces;
auto Err = Replaces.add(Replacement("x.cc", 0, 2, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 0, 5, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(1u, Replaces.size());
EXPECT_EQ(Replacement("x.cc", 0, 5, ""), *Replaces.begin());
Err = Replaces.add(Replacement("x.cc", 1, 5, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(1u, Replaces.size());
EXPECT_EQ(Replacement("x.cc", 0, 6, ""), *Replaces.begin());
}
TEST_F(ReplacementTest, FailedMergeExistingDeletions) {
Replacements Replaces;
Replacement First("x.cc", 0, 2, "");
auto Err = Replaces.add(First);
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Replacement Second("x.cc", 5, 5, "");
Err = Replaces.add(Second);
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 1, 10, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(1u, Replaces.size());
EXPECT_EQ(Replacement("x.cc", 0, 11, ""), *Replaces.begin());
}
TEST_F(ReplacementTest, FailAddRegression) {
Replacements Replaces;
// Create two replacements, where the second one is an insertion of the empty
// string exactly at the end of the first one.
auto Err = Replaces.add(Replacement("x.cc", 0, 10, "1"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 10, 0, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
// Make sure we find the overlap with the first entry when inserting a
// replacement that ends exactly at the seam of the existing replacements.
Replacement OverlappingReplacement("x.cc", 5, 5, "fail");
Err = Replaces.add(OverlappingReplacement);
EXPECT_TRUE(checkReplacementError(std::move(Err),
replacement_error::overlap_conflict,
*Replaces.begin(), OverlappingReplacement));
Err = Replaces.add(Replacement("x.cc", 10, 0, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
}
TEST_F(ReplacementTest, InsertAtOffsetOfReplacement) {
Replacements Replaces;
auto Err = Replaces.add(Replacement("x.cc", 10, 2, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 10, 0, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(Replaces.size(), 2u);
Replaces.clear();
Err = Replaces.add(Replacement("x.cc", 10, 0, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 10, 2, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(Replaces.size(), 2u);
}
TEST_F(ReplacementTest, AddInsertAtOtherInsertWhenOderIndependent) {
Replacements Replaces;
auto Err = Replaces.add(Replacement("x.cc", 10, 0, "a"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Replacement ConflictInsertion("x.cc", 10, 0, "b");
Err = Replaces.add(ConflictInsertion);
EXPECT_TRUE(checkReplacementError(std::move(Err),
replacement_error::insert_conflict,
*Replaces.begin(), ConflictInsertion));
Replaces.clear();
Err = Replaces.add(Replacement("x.cc", 10, 0, "a"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 10, 0, "aa"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(1u, Replaces.size());
EXPECT_EQ(Replacement("x.cc", 10, 0, "aaa"), *Replaces.begin());
Replaces.clear();
Err = Replaces.add(Replacement("x.cc", 10, 0, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 10, 3, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 10, 0, ""));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(2u, Replaces.size());
EXPECT_EQ(Replacement("x.cc", 10, 0, ""), *Replaces.begin());
EXPECT_EQ(Replacement("x.cc", 10, 3, ""), *std::next(Replaces.begin()));
}
TEST_F(ReplacementTest, InsertBetweenAdjacentReplacements) {
Replacements Replaces;
auto Err = Replaces.add(Replacement("x.cc", 10, 5, "a"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 8, 2, "a"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement("x.cc", 10, 0, "b"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
}
TEST_F(ReplacementTest, CanApplyReplacements) {
FileID ID = Context.createInMemoryFile("input.cpp",
"line1\nline2\nline3\nline4");
Replacements Replaces =
toReplacements({Replacement(Context.Sources,
Context.getLocation(ID, 2, 1), 5, "replaced"),
Replacement(Context.Sources,
Context.getLocation(ID, 3, 1), 5, "other")});
EXPECT_TRUE(applyAllReplacements(Replaces, Context.Rewrite));
EXPECT_EQ("line1\nreplaced\nother\nline4", Context.getRewrittenText(ID));
}
// Verifies that replacement/deletion is applied before insertion at the same
// offset.
TEST_F(ReplacementTest, InsertAndDelete) {
FileID ID = Context.createInMemoryFile("input.cpp",
"line1\nline2\nline3\nline4");
Replacements Replaces = toReplacements(
{Replacement(Context.Sources, Context.getLocation(ID, 2, 1), 6, ""),
Replacement(Context.Sources, Context.getLocation(ID, 2, 1), 0,
"other\n")});
EXPECT_TRUE(applyAllReplacements(Replaces, Context.Rewrite));
EXPECT_EQ("line1\nother\nline3\nline4", Context.getRewrittenText(ID));
}
TEST_F(ReplacementTest, AdjacentReplacements) {
FileID ID = Context.createInMemoryFile("input.cpp",
"ab");
Replacements Replaces = toReplacements(
{Replacement(Context.Sources, Context.getLocation(ID, 1, 1), 1, "x"),
Replacement(Context.Sources, Context.getLocation(ID, 1, 2), 1, "y")});
EXPECT_TRUE(applyAllReplacements(Replaces, Context.Rewrite));
EXPECT_EQ("xy", Context.getRewrittenText(ID));
}
TEST_F(ReplacementTest, AddDuplicateReplacements) {
FileID ID = Context.createInMemoryFile("input.cpp",
"line1\nline2\nline3\nline4");
auto Replaces = toReplacements({Replacement(
Context.Sources, Context.getLocation(ID, 2, 1), 5, "replaced")});
auto Err = Replaces.add(Replacement(
Context.Sources, Context.getLocation(ID, 2, 1), 5, "replaced"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
Err = Replaces.add(Replacement(Context.Sources, Context.getLocation(ID, 2, 1),
5, "replaced"));
EXPECT_TRUE(!Err);
llvm::consumeError(std::move(Err));
EXPECT_TRUE(applyAllReplacements(Replaces, Context.Rewrite));
EXPECT_EQ("line1\nreplaced\nline3\nline4", Context.getRewrittenText(ID));
}
TEST_F(ReplacementTest, FailOrderDependentReplacements) {
FileID ID = Context.createInMemoryFile("input.cpp",
"line1\nline2\nline3\nline4");
auto Replaces = toReplacements({Replacement(
Context.Sources, Context.getLocation(ID, 2, 1), 5, "other")});
Replacement ConflictReplacement(Context.Sources,
Context.getLocation(ID, 2, 1), 5, "rehto");
auto Err = Replaces.add(ConflictReplacement);
EXPECT_TRUE(checkReplacementError(std::move(Err),
replacement_error::overlap_conflict,
*Replaces.begin(), ConflictReplacement));
EXPECT_TRUE(applyAllReplacements(Replaces, Context.Rewrite));
EXPECT_EQ("line1\nother\nline3\nline4", Context.getRewrittenText(ID));
}
TEST_F(ReplacementTest, InvalidSourceLocationFailsApplyAll) {
Replacements Replaces =
toReplacements({Replacement(Context.Sources, SourceLocation(), 5, "2")});
EXPECT_FALSE(applyAllReplacements(Replaces, Context.Rewrite));
}
TEST_F(ReplacementTest, MultipleFilesReplaceAndFormat) {
// Column limit is 20.
std::string Code1 = "Long *a =\n"
" new Long();\n"
"long x = 1;";
std::string Expected1 = "auto a = new Long();\n"
"long x =\n"
" 12345678901;";
std::string Code2 = "int x = 123;\n"
"int y = 0;";
std::string Expected2 = "int x =\n"
" 1234567890123;\n"
"int y = 10;";
StringRef File1 = "format_1.cpp";
StringRef File2 = "format_2.cpp";
FileID ID1 = Context.createInMemoryFile(File1, Code1);
FileID ID2 = Context.createInMemoryFile(File2, Code2);
// Scrambled the order of replacements.
std::map<std::string, Replacements> FileToReplaces;
FileToReplaces[File1] = toReplacements(
{tooling::Replacement(Context.Sources, Context.getLocation(ID1, 1, 1), 6,
"auto "),
tooling::Replacement(Context.Sources, Context.getLocation(ID1, 3, 10), 1,
"12345678901")});
FileToReplaces[File2] = toReplacements(
{tooling::Replacement(Context.Sources, Context.getLocation(ID2, 1, 12), 0,
"4567890123"),
tooling::Replacement(Context.Sources, Context.getLocation(ID2, 2, 9), 1,
"10")});
EXPECT_TRUE(
formatAndApplyAllReplacements(FileToReplaces, Context.Rewrite,
"{BasedOnStyle: LLVM, ColumnLimit: 20}"));
EXPECT_EQ(Expected1, Context.getRewrittenText(ID1));
EXPECT_EQ(Expected2, Context.getRewrittenText(ID2));
}
TEST(ShiftedCodePositionTest, FindsNewCodePosition) {
Replacements Replaces =
toReplacements({Replacement("", 0, 1, ""), Replacement("", 4, 3, " ")});
// Assume ' int i;' is turned into 'int i;' and cursor is located at '|'.
EXPECT_EQ(0u, Replaces.getShiftedCodePosition(0)); // |int i;
EXPECT_EQ(0u, Replaces.getShiftedCodePosition(1)); // |nt i;
EXPECT_EQ(1u, Replaces.getShiftedCodePosition(2)); // i|t i;
EXPECT_EQ(2u, Replaces.getShiftedCodePosition(3)); // in| i;
EXPECT_EQ(3u, Replaces.getShiftedCodePosition(4)); // int| i;
EXPECT_EQ(3u, Replaces.getShiftedCodePosition(5)); // int | i;
EXPECT_EQ(3u, Replaces.getShiftedCodePosition(6)); // int |i;
EXPECT_EQ(4u, Replaces.getShiftedCodePosition(7)); // int |;
EXPECT_EQ(5u, Replaces.getShiftedCodePosition(8)); // int i|
}
TEST(ShiftedCodePositionTest, FindsNewCodePositionWithInserts) {
Replacements Replaces = toReplacements({Replacement("", 4, 0, "\"\n\"")});
// Assume '"12345678"' is turned into '"1234"\n"5678"'.
EXPECT_EQ(3u, Replaces.getShiftedCodePosition(3)); // "123|5678"
EXPECT_EQ(7u, Replaces.getShiftedCodePosition(4)); // "1234|678"
EXPECT_EQ(8u, Replaces.getShiftedCodePosition(5)); // "12345|78"
}
TEST(ShiftedCodePositionTest, FindsNewCodePositionInReplacedText) {
// Replace the first four characters with "abcd".
auto Replaces = toReplacements({Replacement("", 0, 4, "abcd")});
for (unsigned i = 0; i < 3; ++i)
EXPECT_EQ(i, Replaces.getShiftedCodePosition(i));
}
TEST(ShiftedCodePositionTest, NoReplacementText) {
Replacements Replaces = toReplacements({Replacement("", 0, 42, "")});
EXPECT_EQ(0u, Replaces.getShiftedCodePosition(0));
EXPECT_EQ(0u, Replaces.getShiftedCodePosition(39));
EXPECT_EQ(3u, Replaces.getShiftedCodePosition(45));
EXPECT_EQ(0u, Replaces.getShiftedCodePosition(42));
}
class FlushRewrittenFilesTest : public ::testing::Test {
public:
FlushRewrittenFilesTest() {}
~FlushRewrittenFilesTest() override {
for (llvm::StringMap<std::string>::iterator I = TemporaryFiles.begin(),
E = TemporaryFiles.end();
I != E; ++I) {
llvm::StringRef Name = I->second;
std::error_code EC = llvm::sys::fs::remove(Name);
(void)EC;
assert(!EC);
}
}
FileID createFile(llvm::StringRef Name, llvm::StringRef Content) {
SmallString<1024> Path;
int FD;
std::error_code EC = llvm::sys::fs::createTemporaryFile(Name, "", FD, Path);
assert(!EC);
(void)EC;
llvm::raw_fd_ostream OutStream(FD, true);
OutStream << Content;
OutStream.close();
const FileEntry *File = Context.Files.getFile(Path);
assert(File != nullptr);
StringRef Found =
TemporaryFiles.insert(std::make_pair(Name, Path.str())).first->second;
assert(Found == Path);
(void)Found;
return Context.Sources.createFileID(File, SourceLocation(), SrcMgr::C_User);
}
std::string getFileContentFromDisk(llvm::StringRef Name) {
std::string Path = TemporaryFiles.lookup(Name);
assert(!Path.empty());
// We need to read directly from the FileManager without relaying through
// a FileEntry, as otherwise we'd read through an already opened file
// descriptor, which might not see the changes made.
// FIXME: Figure out whether there is a way to get the SourceManger to
// reopen the file.
auto FileBuffer = Context.Files.getBufferForFile(Path);
return (*FileBuffer)->getBuffer();
}
llvm::StringMap<std::string> TemporaryFiles;
RewriterTestContext Context;
};
TEST_F(FlushRewrittenFilesTest, StoresChangesOnDisk) {
FileID ID = createFile("input.cpp", "line1\nline2\nline3\nline4");
Replacements Replaces = toReplacements({Replacement(
Context.Sources, Context.getLocation(ID, 2, 1), 5, "replaced")});
EXPECT_TRUE(applyAllReplacements(Replaces, Context.Rewrite));
EXPECT_FALSE(Context.Rewrite.overwriteChangedFiles());
EXPECT_EQ("line1\nreplaced\nline3\nline4",
getFileContentFromDisk("input.cpp"));
}
namespace {
template <typename T>
class TestVisitor : public clang::RecursiveASTVisitor<T> {
public:
bool runOver(StringRef Code) {
return runToolOnCode(new TestAction(this), Code);
}
protected:
clang::SourceManager *SM;
clang::ASTContext *Context;
private:
class FindConsumer : public clang::ASTConsumer {
public:
FindConsumer(TestVisitor *Visitor) : Visitor(Visitor) {}
void HandleTranslationUnit(clang::ASTContext &Context) override {
Visitor->TraverseDecl(Context.getTranslationUnitDecl());
}
private:
TestVisitor *Visitor;
};
class TestAction : public clang::ASTFrontendAction {
public:
TestAction(TestVisitor *Visitor) : Visitor(Visitor) {}
std::unique_ptr<clang::ASTConsumer>
CreateASTConsumer(clang::CompilerInstance &compiler,
llvm::StringRef dummy) override {
Visitor->SM = &compiler.getSourceManager();
Visitor->Context = &compiler.getASTContext();
/// TestConsumer will be deleted by the framework calling us.
return llvm::make_unique<FindConsumer>(Visitor);
}
private:
TestVisitor *Visitor;
};
};
} // end namespace
void expectReplacementAt(const Replacement &Replace,
StringRef File, unsigned Offset, unsigned Length) {
ASSERT_TRUE(Replace.isApplicable());
EXPECT_EQ(File, Replace.getFilePath());
EXPECT_EQ(Offset, Replace.getOffset());
EXPECT_EQ(Length, Replace.getLength());
}
class ClassDeclXVisitor : public TestVisitor<ClassDeclXVisitor> {
public:
bool VisitCXXRecordDecl(CXXRecordDecl *Record) {
if (Record->getName() == "X") {
Replace = Replacement(*SM, Record, "");
}
return true;
}
Replacement Replace;
};
TEST(Replacement, CanBeConstructedFromNode) {
ClassDeclXVisitor ClassDeclX;
EXPECT_TRUE(ClassDeclX.runOver(" class X;"));
expectReplacementAt(ClassDeclX.Replace, "input.cc", 5, 7);
}
TEST(Replacement, ReplacesAtSpellingLocation) {
ClassDeclXVisitor ClassDeclX;
EXPECT_TRUE(ClassDeclX.runOver("#define A(Y) Y\nA(class X);"));
expectReplacementAt(ClassDeclX.Replace, "input.cc", 17, 7);
}
class CallToFVisitor : public TestVisitor<CallToFVisitor> {
public:
bool VisitCallExpr(CallExpr *Call) {
if (Call->getDirectCallee()->getName() == "F") {
Replace = Replacement(*SM, Call, "");
}
return true;
}
Replacement Replace;
};
TEST(Replacement, FunctionCall) {
CallToFVisitor CallToF;
EXPECT_TRUE(CallToF.runOver("void F(); void G() { F(); }"));
expectReplacementAt(CallToF.Replace, "input.cc", 21, 3);
}
TEST(Replacement, TemplatedFunctionCall) {
CallToFVisitor CallToF;
EXPECT_TRUE(CallToF.runOver(
"template <typename T> void F(); void G() { F<int>(); }"));
expectReplacementAt(CallToF.Replace, "input.cc", 43, 8);
}
class NestedNameSpecifierAVisitor
: public TestVisitor<NestedNameSpecifierAVisitor> {
public:
bool TraverseNestedNameSpecifierLoc(NestedNameSpecifierLoc NNSLoc) {
if (NNSLoc.getNestedNameSpecifier()) {
if (const NamespaceDecl* NS = NNSLoc.getNestedNameSpecifier()->getAsNamespace()) {
if (NS->getName() == "a") {
Replace = Replacement(*SM, &NNSLoc, "", Context->getLangOpts());
}
}
}
return TestVisitor<NestedNameSpecifierAVisitor>::TraverseNestedNameSpecifierLoc(
NNSLoc);
}
Replacement Replace;
};
TEST(Replacement, ColonColon) {
NestedNameSpecifierAVisitor VisitNNSA;
EXPECT_TRUE(VisitNNSA.runOver("namespace a { void f() { ::a::f(); } }"));
expectReplacementAt(VisitNNSA.Replace, "input.cc", 25, 5);
}
TEST(Range, overlaps) {
EXPECT_TRUE(Range(10, 10).overlapsWith(Range(0, 11)));
EXPECT_TRUE(Range(0, 11).overlapsWith(Range(10, 10)));
EXPECT_FALSE(Range(10, 10).overlapsWith(Range(0, 10)));
EXPECT_FALSE(Range(0, 10).overlapsWith(Range(10, 10)));
EXPECT_TRUE(Range(0, 10).overlapsWith(Range(2, 6)));
EXPECT_TRUE(Range(2, 6).overlapsWith(Range(0, 10)));
}
TEST(Range, contains) {
EXPECT_TRUE(Range(0, 10).contains(Range(0, 10)));
EXPECT_TRUE(Range(0, 10).contains(Range(2, 6)));
EXPECT_FALSE(Range(2, 6).contains(Range(0, 10)));
EXPECT_FALSE(Range(0, 10).contains(Range(0, 11)));
}
TEST(Range, CalculateRangesOfReplacements) {
// Before: aaaabbbbbbz
// After : bbbbbbzzzzzzoooooooooooooooo
Replacements Replaces = toReplacements(
{Replacement("foo", 0, 4, ""), Replacement("foo", 10, 1, "zzzzzz"),
Replacement("foo", 11, 0, "oooooooooooooooo")});
std::vector<Range> Ranges = Replaces.getAffectedRanges();
EXPECT_EQ(2ul, Ranges.size());
EXPECT_TRUE(Ranges[0].getOffset() == 0);
EXPECT_TRUE(Ranges[0].getLength() == 0);
EXPECT_TRUE(Ranges[1].getOffset() == 6);
EXPECT_TRUE(Ranges[1].getLength() == 22);
}
TEST(Range, CalculateRangesOfInsertionAroundReplacement) {
Replacements Replaces = toReplacements(
{Replacement("foo", 0, 2, ""), Replacement("foo", 0, 0, "ba")});
std::vector<Range> Ranges = Replaces.getAffectedRanges();
EXPECT_EQ(1ul, Ranges.size());
EXPECT_EQ(0u, Ranges[0].getOffset());
EXPECT_EQ(2u, Ranges[0].getLength());
}
TEST(Range, RangesAfterEmptyReplacements) {
std::vector<Range> Ranges = {Range(5, 6), Range(10, 5)};
Replacements Replaces;
std::vector<Range> Expected = {Range(5, 10)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, RangesAfterReplacements) {
std::vector<Range> Ranges = {Range(5, 2), Range(10, 5)};
Replacements Replaces = toReplacements({Replacement("foo", 0, 2, "1234")});
std::vector<Range> Expected = {Range(0, 4), Range(7, 2), Range(12, 5)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, RangesBeforeReplacements) {
std::vector<Range> Ranges = {Range(5, 2), Range(10, 5)};
Replacements Replaces = toReplacements({Replacement("foo", 20, 2, "1234")});
std::vector<Range> Expected = {Range(5, 2), Range(10, 5), Range(20, 4)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, NotAffectedByReplacements) {
std::vector<Range> Ranges = {Range(0, 2), Range(5, 2), Range(10, 5)};
Replacements Replaces = toReplacements({Replacement("foo", 3, 2, "12"),
Replacement("foo", 12, 2, "12"),
Replacement("foo", 20, 5, "")});
std::vector<Range> Expected = {Range(0, 2), Range(3, 4), Range(10, 5),
Range(20, 0)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, RangesWithNonOverlappingReplacements) {
std::vector<Range> Ranges = {Range(0, 2), Range(5, 2), Range(10, 5)};
Replacements Replaces = toReplacements({Replacement("foo", 3, 1, ""),
Replacement("foo", 6, 1, "123"),
Replacement("foo", 20, 2, "12345")});
std::vector<Range> Expected = {Range(0, 2), Range(3, 0), Range(4, 4),
Range(11, 5), Range(21, 5)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, RangesWithOverlappingReplacements) {
std::vector<Range> Ranges = {Range(0, 2), Range(5, 2), Range(15, 5),
Range(30, 5)};
Replacements Replaces = toReplacements(
{Replacement("foo", 1, 3, ""), Replacement("foo", 6, 1, "123"),
Replacement("foo", 13, 3, "1"), Replacement("foo", 25, 15, "")});
std::vector<Range> Expected = {Range(0, 1), Range(2, 4), Range(12, 5),
Range(22, 0)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, MergeIntoOneRange) {
std::vector<Range> Ranges = {Range(0, 2), Range(5, 2), Range(15, 5)};
Replacements Replaces =
toReplacements({Replacement("foo", 1, 15, "1234567890")});
std::vector<Range> Expected = {Range(0, 15)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, ReplacementsStartingAtRangeOffsets) {
std::vector<Range> Ranges = {Range(0, 2), Range(5, 5), Range(15, 5)};
Replacements Replaces = toReplacements(
{Replacement("foo", 0, 2, "12"), Replacement("foo", 5, 1, "123"),
Replacement("foo", 7, 4, "12345"), Replacement("foo", 15, 10, "12")});
std::vector<Range> Expected = {Range(0, 2), Range(5, 9), Range(18, 2)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, ReplacementsEndingAtRangeEnds) {
std::vector<Range> Ranges = {Range(0, 2), Range(5, 2), Range(15, 5)};
Replacements Replaces = toReplacements(
{Replacement("foo", 6, 1, "123"), Replacement("foo", 17, 3, "12")});
std::vector<Range> Expected = {Range(0, 2), Range(5, 4), Range(17, 4)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, AjacentReplacements) {
std::vector<Range> Ranges = {Range(0, 0), Range(15, 5)};
Replacements Replaces = toReplacements(
{Replacement("foo", 1, 2, "123"), Replacement("foo", 12, 3, "1234")});
std::vector<Range> Expected = {Range(0, 0), Range(1, 3), Range(13, 9)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, MergeRangesAfterReplacements) {
std::vector<Range> Ranges = {Range(8, 0), Range(5, 2), Range(9, 0), Range(0, 1)};
Replacements Replaces = toReplacements({Replacement("foo", 1, 3, ""),
Replacement("foo", 7, 0, "12"),
Replacement("foo", 9, 2, "")});
std::vector<Range> Expected = {Range(0, 1), Range(2, 4), Range(7, 0),
Range(8, 0)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
TEST(Range, ConflictingRangesBeforeReplacements) {
std::vector<Range> Ranges = {Range(8, 3), Range(5, 4), Range(9, 1)};
Replacements Replaces = toReplacements({Replacement("foo", 1, 3, "")});
std::vector<Range> Expected = {Range(1, 0), Range(2, 6)};
EXPECT_EQ(Expected, calculateRangesAfterReplacements(Replaces, Ranges));
}
class MergeReplacementsTest : public ::testing::Test {
protected:
void mergeAndTestRewrite(StringRef Code, StringRef Intermediate,
StringRef Result, const Replacements &First,
const Replacements &Second) {
// These are mainly to verify the test itself and make it easier to read.
auto AfterFirst = applyAllReplacements(Code, First);
EXPECT_TRUE(static_cast<bool>(AfterFirst));
auto InSequenceRewrite = applyAllReplacements(*AfterFirst, Second);
EXPECT_TRUE(static_cast<bool>(InSequenceRewrite));
EXPECT_EQ(Intermediate, *AfterFirst);
EXPECT_EQ(Result, *InSequenceRewrite);
tooling::Replacements Merged = First.merge(Second);
auto MergedRewrite = applyAllReplacements(Code, Merged);
EXPECT_TRUE(static_cast<bool>(MergedRewrite));
EXPECT_EQ(*InSequenceRewrite, *MergedRewrite);
if (*InSequenceRewrite != *MergedRewrite)
for (tooling::Replacement M : Merged)
llvm::errs() << M.getOffset() << " " << M.getLength() << " "
<< M.getReplacementText() << "\n";
}
void mergeAndTestRewrite(StringRef Code, const Replacements &First,
const Replacements &Second) {
auto AfterFirst = applyAllReplacements(Code, First);
EXPECT_TRUE(static_cast<bool>(AfterFirst));
auto InSequenceRewrite = applyAllReplacements(*AfterFirst, Second);
tooling::Replacements Merged = First.merge(Second);
auto MergedRewrite = applyAllReplacements(Code, Merged);
EXPECT_TRUE(static_cast<bool>(MergedRewrite));
EXPECT_EQ(*InSequenceRewrite, *MergedRewrite);
if (*InSequenceRewrite != *MergedRewrite)
for (tooling::Replacement M : Merged)
llvm::errs() << M.getOffset() << " " << M.getLength() << " "
<< M.getReplacementText() << "\n";
}
};
TEST_F(MergeReplacementsTest, Offsets) {
mergeAndTestRewrite("aaa", "aabab", "cacabab",
toReplacements({{"", 2, 0, "b"}, {"", 3, 0, "b"}}),
toReplacements({{"", 0, 0, "c"}, {"", 1, 0, "c"}}));
mergeAndTestRewrite("aaa", "babaa", "babacac",
toReplacements({{"", 0, 0, "b"}, {"", 1, 0, "b"}}),
toReplacements({{"", 4, 0, "c"}, {"", 5, 0, "c"}}));
mergeAndTestRewrite("aaaa", "aaa", "aac", toReplacements({{"", 1, 1, ""}}),
toReplacements({{"", 2, 1, "c"}}));
mergeAndTestRewrite("aa", "bbabba", "bbabcba",
toReplacements({{"", 0, 0, "bb"}, {"", 1, 0, "bb"}}),
toReplacements({{"", 4, 0, "c"}}));
}
TEST_F(MergeReplacementsTest, Concatenations) {
// Basic concatenations. It is important to merge these into a single
// replacement to ensure the correct order.
{
auto First = toReplacements({{"", 0, 0, "a"}});
auto Second = toReplacements({{"", 1, 0, "b"}});
EXPECT_EQ(toReplacements({{"", 0, 0, "ab"}}), First.merge(Second));
}
{
auto First = toReplacements({{"", 0, 0, "a"}});
auto Second = toReplacements({{"", 0, 0, "b"}});
EXPECT_EQ(toReplacements({{"", 0, 0, "ba"}}), First.merge(Second));
}
mergeAndTestRewrite("", "a", "ab", toReplacements({{"", 0, 0, "a"}}),
toReplacements({{"", 1, 0, "b"}}));
mergeAndTestRewrite("", "a", "ba", toReplacements({{"", 0, 0, "a"}}),
toReplacements({{"", 0, 0, "b"}}));
}
TEST_F(MergeReplacementsTest, NotChangingLengths) {
mergeAndTestRewrite("aaaa", "abba", "acca",
toReplacements({{"", 1, 2, "bb"}}),
toReplacements({{"", 1, 2, "cc"}}));
mergeAndTestRewrite("aaaa", "abba", "abcc",
toReplacements({{"", 1, 2, "bb"}}),
toReplacements({{"", 2, 2, "cc"}}));
mergeAndTestRewrite("aaaa", "abba", "ccba",
toReplacements({{"", 1, 2, "bb"}}),
toReplacements({{"", 0, 2, "cc"}}));
mergeAndTestRewrite("aaaaaa", "abbdda", "abccda",
toReplacements({{"", 1, 2, "bb"}, {"", 3, 2, "dd"}}),
toReplacements({{"", 2, 2, "cc"}}));
}
TEST_F(MergeReplacementsTest, OverlappingRanges) {
mergeAndTestRewrite("aaa", "bbd", "bcbcd",
toReplacements({{"", 0, 1, "bb"}, {"", 1, 2, "d"}}),
toReplacements({{"", 1, 0, "c"}, {"", 2, 0, "c"}}));
mergeAndTestRewrite("aaaa", "aabbaa", "acccca",
toReplacements({{"", 2, 0, "bb"}}),
toReplacements({{"", 1, 4, "cccc"}}));
mergeAndTestRewrite("aaaa", "aababa", "acccca",
toReplacements({{"", 2, 0, "b"}, {"", 3, 0, "b"}}),
toReplacements({{"", 1, 4, "cccc"}}));
mergeAndTestRewrite("aaaaaa", "abbbba", "abba",
toReplacements({{"", 1, 4, "bbbb"}}),
toReplacements({{"", 2, 2, ""}}));
mergeAndTestRewrite("aaaa", "aa", "cc",
toReplacements({{"", 1, 1, ""}, {"", 2, 1, ""}}),
toReplacements({{"", 0, 2, "cc"}}));
mergeAndTestRewrite("aa", "abbba", "abcbcba",
toReplacements({{"", 1, 0, "bbb"}}),
toReplacements({{"", 2, 0, "c"}, {"", 3, 0, "c"}}));
mergeAndTestRewrite(
"aaa", "abbab", "ccdd",
toReplacements({{"", 0, 1, ""}, {"", 2, 0, "bb"}, {"", 3, 0, "b"}}),
toReplacements({{"", 0, 2, "cc"}, {"", 2, 3, "dd"}}));
mergeAndTestRewrite(
"aa", "babbab", "ccdd",
toReplacements({{"", 0, 0, "b"}, {"", 1, 0, "bb"}, {"", 2, 0, "b"}}),
toReplacements({{"", 0, 3, "cc"}, {"", 3, 3, "dd"}}));
}
TEST(DeduplicateByFileTest, PathsWithDots) {
std::map<std::string, Replacements> FileToReplaces;
llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> VFS(
new llvm::vfs::InMemoryFileSystem());
FileManager FileMgr(FileSystemOptions(), VFS);
#if !defined(_WIN32)
StringRef Path1 = "a/b/.././c.h";
StringRef Path2 = "a/c.h";
#else
StringRef Path1 = "a\\b\\..\\.\\c.h";
StringRef Path2 = "a\\c.h";
#endif
EXPECT_TRUE(VFS->addFile(Path1, 0, llvm::MemoryBuffer::getMemBuffer("")));
EXPECT_TRUE(VFS->addFile(Path2, 0, llvm::MemoryBuffer::getMemBuffer("")));
FileToReplaces[Path1] = Replacements();
FileToReplaces[Path2] = Replacements();
FileToReplaces = groupReplacementsByFile(FileMgr, FileToReplaces);
EXPECT_EQ(1u, FileToReplaces.size());
EXPECT_EQ(Path1, FileToReplaces.begin()->first);
}
TEST(DeduplicateByFileTest, PathWithDotSlash) {
std::map<std::string, Replacements> FileToReplaces;
llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> VFS(
new llvm::vfs::InMemoryFileSystem());
FileManager FileMgr(FileSystemOptions(), VFS);
#if !defined(_WIN32)
StringRef Path1 = "./a/b/c.h";
StringRef Path2 = "a/b/c.h";
#else
StringRef Path1 = ".\\a\\b\\c.h";
StringRef Path2 = "a\\b\\c.h";
#endif
EXPECT_TRUE(VFS->addFile(Path1, 0, llvm::MemoryBuffer::getMemBuffer("")));
EXPECT_TRUE(VFS->addFile(Path2, 0, llvm::MemoryBuffer::getMemBuffer("")));
FileToReplaces[Path1] = Replacements();
FileToReplaces[Path2] = Replacements();
FileToReplaces = groupReplacementsByFile(FileMgr, FileToReplaces);
EXPECT_EQ(1u, FileToReplaces.size());
EXPECT_EQ(Path1, FileToReplaces.begin()->first);
}
TEST(DeduplicateByFileTest, NonExistingFilePath) {
std::map<std::string, Replacements> FileToReplaces;
llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> VFS(
new llvm::vfs::InMemoryFileSystem());
FileManager FileMgr(FileSystemOptions(), VFS);
#if !defined(_WIN32)
StringRef Path1 = "./a/b/c.h";
StringRef Path2 = "a/b/c.h";
#else
StringRef Path1 = ".\\a\\b\\c.h";
StringRef Path2 = "a\\b\\c.h";
#endif
FileToReplaces[Path1] = Replacements();
FileToReplaces[Path2] = Replacements();
FileToReplaces = groupReplacementsByFile(FileMgr, FileToReplaces);
EXPECT_TRUE(FileToReplaces.empty());
}
class AtomicChangeTest : public ::testing::Test {
protected:
void SetUp() override {
DefaultFileID = Context.createInMemoryFile("input.cpp", DefaultCode);
DefaultLoc = Context.Sources.getLocForStartOfFile(DefaultFileID)
.getLocWithOffset(20);
assert(DefaultLoc.isValid() && "Default location must be valid.");
}
RewriterTestContext Context;
std::string DefaultCode = std::string(100, 'a');
unsigned DefaultOffset = 20;
SourceLocation DefaultLoc;
FileID DefaultFileID;
};
TEST_F(AtomicChangeTest, AtomicChangeToYAML) {
AtomicChange Change(Context.Sources, DefaultLoc);
llvm::Error Err =
Change.insert(Context.Sources, DefaultLoc, "aa", /*InsertAfter=*/false);
ASSERT_TRUE(!Err);
Err = Change.insert(Context.Sources, DefaultLoc.getLocWithOffset(10), "bb",
/*InsertAfter=*/false);
ASSERT_TRUE(!Err);
Change.addHeader("a.h");
Change.removeHeader("b.h");
std::string YAMLString = Change.toYAMLString();
// NOTE: If this test starts to fail for no obvious reason, check whitespace.
ASSERT_STREQ("---\n"
"Key: 'input.cpp:20'\n"
"FilePath: input.cpp\n"
"Error: ''\n"
"InsertedHeaders: \n" // Extra whitespace here!
" - a.h\n"
"RemovedHeaders: \n" // Extra whitespace here!
" - b.h\n"
"Replacements: \n" // Extra whitespace here!
" - FilePath: input.cpp\n"
" Offset: 20\n"
" Length: 0\n"
" ReplacementText: aa\n"
" - FilePath: input.cpp\n"
" Offset: 30\n"
" Length: 0\n"
" ReplacementText: bb\n"
"...\n",
YAMLString.c_str());
}
TEST_F(AtomicChangeTest, YAMLToAtomicChange) {
std::string YamlContent = "---\n"
"Key: 'input.cpp:20'\n"
"FilePath: input.cpp\n"
"Error: 'ok'\n"
"InsertedHeaders: \n" // Extra whitespace here!
" - a.h\n"
"RemovedHeaders: \n" // Extra whitespace here!
" - b.h\n"
"Replacements: \n" // Extra whitespace here!
" - FilePath: input.cpp\n"
" Offset: 20\n"
" Length: 0\n"
" ReplacementText: aa\n"
" - FilePath: input.cpp\n"
" Offset: 30\n"
" Length: 0\n"
" ReplacementText: bb\n"
"...\n";
AtomicChange ExpectedChange(Context.Sources, DefaultLoc);
llvm::Error Err = ExpectedChange.insert(Context.Sources, DefaultLoc, "aa",
/*InsertAfter=*/false);
ASSERT_TRUE(!Err);
Err = ExpectedChange.insert(Context.Sources, DefaultLoc.getLocWithOffset(10),
"bb", /*InsertAfter=*/false);
ASSERT_TRUE(!Err);
ExpectedChange.addHeader("a.h");
ExpectedChange.removeHeader("b.h");
ExpectedChange.setError("ok");
AtomicChange ActualChange = AtomicChange::convertFromYAML(YamlContent);
EXPECT_EQ(ExpectedChange.getKey(), ActualChange.getKey());
EXPECT_EQ(ExpectedChange.getFilePath(), ActualChange.getFilePath());
EXPECT_EQ(ExpectedChange.getError(), ActualChange.getError());
EXPECT_EQ(ExpectedChange.getInsertedHeaders(),
ActualChange.getInsertedHeaders());
EXPECT_EQ(ExpectedChange.getRemovedHeaders(),
ActualChange.getRemovedHeaders());
EXPECT_EQ(ExpectedChange.getReplacements().size(),
ActualChange.getReplacements().size());
EXPECT_EQ(2u, ActualChange.getReplacements().size());
EXPECT_EQ(*ExpectedChange.getReplacements().begin(),
*ActualChange.getReplacements().begin());
EXPECT_EQ(*(++ExpectedChange.getReplacements().begin()),
*(++ActualChange.getReplacements().begin()));
}
TEST_F(AtomicChangeTest, CheckKeyAndKeyFile) {
AtomicChange Change(Context.Sources, DefaultLoc);
EXPECT_EQ("input.cpp:20", Change.getKey());
EXPECT_EQ("input.cpp", Change.getFilePath());
}
TEST_F(AtomicChangeTest, Replace) {
AtomicChange Change(Context.Sources, DefaultLoc);
llvm::Error Err = Change.replace(Context.Sources, DefaultLoc, 2, "aa");
ASSERT_TRUE(!Err);
EXPECT_EQ(Change.getReplacements().size(), 1u);
EXPECT_EQ(*Change.getReplacements().begin(),
Replacement(Context.Sources, DefaultLoc, 2, "aa"));
// Add a new replacement that conflicts with the existing one.
Err = Change.replace(Context.Sources, DefaultLoc, 3, "ab");
EXPECT_TRUE((bool)Err);
llvm::consumeError(std::move(Err));
EXPECT_EQ(Change.getReplacements().size(), 1u);
}
TEST_F(AtomicChangeTest, ReplaceWithRange) {
AtomicChange Change(Context.Sources, DefaultLoc);
SourceLocation End = DefaultLoc.getLocWithOffset(20);
llvm::Error Err = Change.replace(
Context.Sources, CharSourceRange::getCharRange(DefaultLoc, End), "aa");
ASSERT_TRUE(!Err);
EXPECT_EQ(Change.getReplacements().size(), 1u);
EXPECT_EQ(*Change.getReplacements().begin(),
Replacement(Context.Sources, DefaultLoc, 20, "aa"));
}
TEST_F(AtomicChangeTest, InsertBefore) {
AtomicChange Change(Context.Sources, DefaultLoc);
llvm::Error Err = Change.insert(Context.Sources, DefaultLoc, "aa");
ASSERT_TRUE(!Err);
EXPECT_EQ(Change.getReplacements().size(), 1u);
EXPECT_EQ(*Change.getReplacements().begin(),
Replacement(Context.Sources, DefaultLoc, 0, "aa"));
Err = Change.insert(Context.Sources, DefaultLoc, "b", /*InsertAfter=*/false);
ASSERT_TRUE(!Err);
EXPECT_EQ(Change.getReplacements().size(), 1u);
EXPECT_EQ(*Change.getReplacements().begin(),
Replacement(Context.Sources, DefaultLoc, 0, "baa"));
}
TEST_F(AtomicChangeTest, InsertAfter) {
AtomicChange Change(Context.Sources, DefaultLoc);
llvm::Error Err = Change.insert(Context.Sources, DefaultLoc, "aa");
ASSERT_TRUE(!Err);
EXPECT_EQ(Change.getReplacements().size(), 1u);
EXPECT_EQ(*Change.getReplacements().begin(),
Replacement(Context.Sources, DefaultLoc, 0, "aa"));
Err = Change.insert(Context.Sources, DefaultLoc, "b");
ASSERT_TRUE(!Err);
EXPECT_EQ(Change.getReplacements().size(), 1u);
EXPECT_EQ(*Change.getReplacements().begin(),
Replacement(Context.Sources, DefaultLoc, 0, "aab"));
}
TEST_F(AtomicChangeTest, InsertBeforeWithInvalidLocation) {
AtomicChange Change(Context.Sources, DefaultLoc);
llvm::Error Err =
Change.insert(Context.Sources, DefaultLoc, "a", /*InsertAfter=*/false);
ASSERT_TRUE(!Err);
// Invalid location.
Err = Change.insert(Context.Sources, SourceLocation(), "a",
/*InsertAfter=*/false);
ASSERT_TRUE((bool)Err);
EXPECT_TRUE(checkReplacementError(
std::move(Err), replacement_error::wrong_file_path,
Replacement(Context.Sources, DefaultLoc, 0, "a"),
Replacement(Context.Sources, SourceLocation(), 0, "a")));
}
TEST_F(AtomicChangeTest, InsertBeforeToWrongFile) {
AtomicChange Change(Context.Sources, DefaultLoc);
llvm::Error Err =
Change.insert(Context.Sources, DefaultLoc, "a", /*InsertAfter=*/false);
ASSERT_TRUE(!Err);
// Inserting at a different file.
FileID NewID = Context.createInMemoryFile("extra.cpp", DefaultCode);
SourceLocation NewLoc = Context.Sources.getLocForStartOfFile(NewID);
Err = Change.insert(Context.Sources, NewLoc, "b", /*InsertAfter=*/false);
ASSERT_TRUE((bool)Err);
EXPECT_TRUE(
checkReplacementError(std::move(Err), replacement_error::wrong_file_path,
Replacement(Context.Sources, DefaultLoc, 0, "a"),
Replacement(Context.Sources, NewLoc, 0, "b")));
}
TEST_F(AtomicChangeTest, InsertAfterWithInvalidLocation) {
AtomicChange Change(Context.Sources, DefaultLoc);
llvm::Error Err = Change.insert(Context.Sources, DefaultLoc, "a");
ASSERT_TRUE(!Err);
// Invalid location.
Err = Change.insert(Context.Sources, SourceLocation(), "b");
ASSERT_TRUE((bool)Err);
EXPECT_TRUE(checkReplacementError(
std::move(Err), replacement_error::wrong_file_path,
Replacement(Context.Sources, DefaultLoc, 0, "a"),
Replacement(Context.Sources, SourceLocation(), 0, "b")));
}
class ApplyAtomicChangesTest : public ::testing::Test {
protected:
ApplyAtomicChangesTest() : FilePath("file.cc") {
Spec.Cleanup = true;
Spec.Format = ApplyChangesSpec::kAll;
Spec.Style = format::getLLVMStyle();
}
~ApplyAtomicChangesTest() override {}
void setInput(llvm::StringRef Input) {
Code = Input;
FID = Context.createInMemoryFile(FilePath, Code);
}
SourceLocation getLoc(unsigned Offset) const {
return Context.Sources.getLocForStartOfFile(FID).getLocWithOffset(Offset);
}
AtomicChange replacementToAtomicChange(llvm::StringRef Key, unsigned Offset,
unsigned Length,
llvm::StringRef Text) {
AtomicChange Change(FilePath, Key);
llvm::Error Err =
Change.replace(Context.Sources, getLoc(Offset), Length, Text);
EXPECT_FALSE(Err);
return Change;
}
std::string rewrite(bool FailureExpected = false) {
llvm::Expected<std::string> ChangedCode =
applyAtomicChanges(FilePath, Code, Changes, Spec);
EXPECT_EQ(FailureExpected, !ChangedCode);
if (!ChangedCode) {
llvm::errs() << "Failed to apply changes: "
<< llvm::toString(ChangedCode.takeError()) << "\n";
return "";
}
return *ChangedCode;
}
RewriterTestContext Context;
FileID FID;
ApplyChangesSpec Spec;
std::string Code;
std::string FilePath;
llvm::SmallVector<AtomicChange, 8> Changes;
};
TEST_F(ApplyAtomicChangesTest, BasicRefactoring) {
setInput("int a;");
AtomicChange Change(FilePath, "key1");
Changes.push_back(replacementToAtomicChange("key1", 4, 1, "b"));
EXPECT_EQ("int b;", rewrite());
}
TEST_F(ApplyAtomicChangesTest, SeveralRefactorings) {
setInput("int a;\n"
"int b;");
Changes.push_back(replacementToAtomicChange("key1", 0, 3, "float"));
Changes.push_back(replacementToAtomicChange("key2", 4, 1, "f"));
Changes.push_back(replacementToAtomicChange("key3", 11, 1, "g"));
Changes.push_back(replacementToAtomicChange("key4", 7, 3, "float"));
EXPECT_EQ("float f;\n"
"float g;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, IgnorePathsInRefactorings) {
setInput("int a;\n"
"int b;");
Changes.push_back(replacementToAtomicChange("key1", 4, 1, "aa"));
FileID ID = Context.createInMemoryFile("AnotherFile", "12345678912345");
Changes.emplace_back("AnotherFile", "key2");
auto Err = Changes.back().replace(
Context.Sources,
Context.Sources.getLocForStartOfFile(ID).getLocWithOffset(11), 1, "bb");
ASSERT_TRUE(!Err);
EXPECT_EQ("int aa;\n"
"int bb;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, AppliesDuplicateInsertions) {
setInput("int a;");
Changes.push_back(replacementToAtomicChange("key1", 5, 0, "b"));
Changes.push_back(replacementToAtomicChange("key2", 5, 0, "b"));
EXPECT_EQ("int abb;", rewrite());
}
TEST_F(ApplyAtomicChangesTest, BailsOnOverlappingRefactorings) {
setInput("int a;");
Changes.push_back(replacementToAtomicChange("key1", 0, 5, "float f"));
Changes.push_back(replacementToAtomicChange("key2", 4, 1, "b"));
EXPECT_EQ("", rewrite(/*FailureExpected=*/true));
}
TEST_F(ApplyAtomicChangesTest, BasicReformatting) {
setInput("int a;");
Changes.push_back(replacementToAtomicChange("key1", 5, 1, "b"));
EXPECT_EQ("int b;", rewrite());
}
TEST_F(ApplyAtomicChangesTest, OnlyFormatWhenViolateColumnLimits) {
Spec.Format = ApplyChangesSpec::kViolations;
Spec.Style.ColumnLimit = 8;
setInput("int a;\n"
"int a;\n"
"int aaaaaaaa;\n");
Changes.push_back(replacementToAtomicChange("key1", 5, 1, "x"));
Changes.push_back(replacementToAtomicChange("key2", 15, 1, "x"));
Changes.push_back(replacementToAtomicChange("key3", 23, 8, "xx"));
EXPECT_EQ("int x;\n"
"int x;\n"
"int xx;\n",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, LastLineViolateColumnLimits) {
Spec.Format = ApplyChangesSpec::kViolations;
Spec.Style.ColumnLimit = 8;
setInput("int a;\n"
"int a;");
Changes.push_back(replacementToAtomicChange("key1", 0, 1, "i"));
Changes.push_back(replacementToAtomicChange("key2", 15, 2, "y;"));
EXPECT_EQ("int a;\n"
"int y;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, LastLineWithNewlineViolateColumnLimits) {
Spec.Format = ApplyChangesSpec::kViolations;
Spec.Style.ColumnLimit = 8;
setInput("int a;\n"
"int a;\n");
Changes.push_back(replacementToAtomicChange("key1", 0, 1, "i"));
Changes.push_back(replacementToAtomicChange("key2", 14, 3, "y;\n"));
EXPECT_EQ("int a;\n"
"int y;\n",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, Longer) {
setInput("int a;");
Changes.push_back(replacementToAtomicChange("key1", 5, 1, "bbb"));
EXPECT_EQ("int bbb;", rewrite());
}
TEST_F(ApplyAtomicChangesTest, Shorter) {
setInput("int aaa;");
Changes.push_back(replacementToAtomicChange("key1", 5, 3, "b"));
EXPECT_EQ("int b;", rewrite());
}
TEST_F(ApplyAtomicChangesTest, OnlyFormatChangedLines) {
setInput("int aaa;\n"
"int a = b;\n"
"int bbb;");
Changes.push_back(replacementToAtomicChange("key1", 14, 1, "b"));
EXPECT_EQ("int aaa;\n"
"int b = b;\n"
"int bbb;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, DisableFormatting) {
Spec.Format = ApplyChangesSpec::kNone;
setInput("int aaa;\n"
"int a = b;\n"
"int bbb;");
Changes.push_back(replacementToAtomicChange("key1", 14, 1, "b"));
EXPECT_EQ("int aaa;\n"
"int b = b;\n"
"int bbb;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, AdaptsToLocalPointerStyle) {
setInput("int *aaa;\n"
"int *bbb;");
Changes.push_back(replacementToAtomicChange("key1", 0, 0, "int* ccc;\n"));
EXPECT_EQ("int *ccc;\n"
"int *aaa;\n"
"int *bbb;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, AcceptsSurroundingFormatting) {
setInput(" int aaa;\n"
" int a = b;\n"
" int bbb;");
Changes.push_back(replacementToAtomicChange("key1", 20, 1, "b"));
EXPECT_EQ(" int aaa;\n"
" int b = b;\n"
" int bbb;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, BailsOutOnConflictingChanges) {
setInput("int c;\n"
"int f;");
// Insertions at the same offset are only allowed in the same AtomicChange.
Changes.push_back(replacementToAtomicChange("key1", 0, 0, "int a;\n"));
Changes.push_back(replacementToAtomicChange("key2", 0, 0, "int b;\n"));
EXPECT_EQ("", rewrite(/*FailureExpected=*/true));
}
TEST_F(ApplyAtomicChangesTest, InsertsNewIncludesInRightOrder) {
setInput("int a;");
Changes.emplace_back(FilePath, "key1");
Changes.back().addHeader("b");
Changes.back().addHeader("c");
Changes.emplace_back(FilePath, "key2");
Changes.back().addHeader("a");
EXPECT_EQ("#include \"a\"\n"
"#include \"b\"\n"
"#include \"c\"\n"
"int a;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, RemoveAndSortIncludes) {
setInput("#include \"a\"\n"
"#include \"b\"\n"
"#include \"c\"\n"
"\n"
"int a;");
Changes.emplace_back(FilePath, "key1");
Changes.back().removeHeader("b");
EXPECT_EQ("#include \"a\"\n"
"#include \"c\"\n"
"\n"
"int a;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, InsertsSystemIncludes) {
setInput("#include <asys>\n"
"#include <csys>\n"
"\n"
"#include \"a\"\n"
"#include \"c\"\n");
Changes.emplace_back(FilePath, "key1");
Changes.back().addHeader("<asys>"); // Already exists.
Changes.back().addHeader("<b>");
Changes.back().addHeader("<d>");
Changes.back().addHeader("\"b-already-escaped\"");
EXPECT_EQ("#include <asys>\n"
"#include <b>\n"
"#include <csys>\n"
"#include <d>\n"
"\n"
"#include \"a\"\n"
"#include \"b-already-escaped\"\n"
"#include \"c\"\n",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, RemoveSystemIncludes) {
setInput("#include <a>\n"
"#include <b>\n"
"\n"
"#include \"c\""
"\n"
"int a;");
Changes.emplace_back(FilePath, "key1");
Changes.back().removeHeader("<a>");
EXPECT_EQ("#include <b>\n"
"\n"
"#include \"c\""
"\n"
"int a;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest,
DoNotFormatFollowingLinesIfSeparatedWithNewline) {
setInput("#ifndef __H__\n"
"#define __H__\n"
"#include \"b\"\n"
"\n"
"int a;\n"
"int a;\n"
"int a;\n"
"#endif // __H__\n");
Changes.push_back(replacementToAtomicChange("key1",
llvm::StringRef("#ifndef __H__\n"
"#define __H__\n"
"\n"
"#include \"b\"\n"
"int a;\n"
"int ")
.size(),
1, "b"));
Changes.back().addHeader("a");
EXPECT_EQ("#ifndef __H__\n"
"#define __H__\n"
"#include \"a\"\n"
"#include \"b\"\n"
"\n"
"int a;\n"
"int b;\n"
"int a;\n"
"#endif // __H__\n",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, FormatsCorrectLineWhenHeaderIsRemoved) {
setInput("#include \"a\"\n"
"\n"
"int a;\n"
"int a;\n"
"int a;");
Changes.push_back(replacementToAtomicChange("key1", 27, 1, "b"));
Changes.back().removeHeader("a");
EXPECT_EQ("\n"
"int a;\n"
"int b;\n"
"int a;",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, CleansUpCtorInitializers) {
setInput("A::A() : a(), b() {}\n"
"A::A() : a(), b() {}\n"
"A::A() : a(), b() {}\n"
"A::A() : a()/**/, b() {}\n"
"A::A() : a() ,// \n"
" /**/ b() {}");
Changes.emplace_back(FilePath, "key1");
auto Err = Changes.back().replace(Context.Sources, getLoc(9), 3, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(35), 3, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(51), 3, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(56), 3, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(72), 3, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(97), 3, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(118), 3, "");
ASSERT_TRUE(!Err);
EXPECT_EQ("A::A() : b() {}\n"
"A::A() : a() {}\n"
"A::A() {}\n"
"A::A() : b() {}\n"
"A::A() {}",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, CleansUpParameterLists) {
setInput("void f(int i, float f, string s);\n"
"f(1, 2.0f, \"a\");\n"
"g(1, 1);");
Changes.emplace_back(FilePath, "key1");
auto Err = Changes.back().replace(Context.Sources, getLoc(7), 5, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(23), 8, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(36), 1, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(45), 3, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(53), 1, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(56), 1, "");
ASSERT_TRUE(!Err);
EXPECT_EQ("void f(float f);\n"
"f(2.0f);\n"
"g();",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, DisableCleanup) {
Spec.Cleanup = false;
setInput("void f(int i, float f, string s);\n"
"f(1, 2.0f, \"a\");\n"
"g(1, 1);");
Changes.emplace_back(FilePath, "key1");
auto Err = Changes.back().replace(Context.Sources, getLoc(7), 5, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(23), 8, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(36), 1, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(45), 3, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(53), 1, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(56), 1, "");
ASSERT_TRUE(!Err);
EXPECT_EQ("void f(, float f, );\n"
"f(, 2.0f, );\n"
"g(, );",
rewrite());
}
TEST_F(ApplyAtomicChangesTest, EverythingDeleted) {
setInput("int a;");
Changes.push_back(replacementToAtomicChange("key1", 0, 6, ""));
EXPECT_EQ("", rewrite());
}
TEST_F(ApplyAtomicChangesTest, DoesNotDeleteInserts) {
setInput("int a;\n"
"int b;");
Changes.emplace_back(FilePath, "key1");
auto Err = Changes.back().replace(Context.Sources, getLoc(4), 1, "");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(4), 0, "b");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(11), 0, "a");
ASSERT_TRUE(!Err);
Err = Changes.back().replace(Context.Sources, getLoc(11), 1, "");
ASSERT_TRUE(!Err);
EXPECT_EQ("int b;\n"
"int a;",
rewrite());
}
} // end namespace tooling
} // end namespace clang