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//===- cpp11-migrate/FileOverridesTest.cpp - File overrides unit tests ----===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Core/FileOverrides.h"
#include "Core/Refactoring.h"
#include "gtest/gtest.h"
#include "VirtualFileHelper.h"
#include "clang/Rewrite/Core/Rewriter.h"
using namespace clang;
using namespace clang::tooling;
static Replacement makeReplacement(unsigned Offset, unsigned Length,
unsigned ReplacementLength,
llvm::StringRef FilePath) {
return Replacement(FilePath, Offset, Length,
std::string(ReplacementLength, '~'));
}
// generate a set of replacements containing one element
static ReplacementsVec makeReplacements(unsigned Offset, unsigned Length,
unsigned ReplacementLength,
llvm::StringRef FilePath = "~") {
ReplacementsVec Replaces;
Replaces.push_back(
makeReplacement(Offset, Length, ReplacementLength, FilePath));
return Replaces;
}
static bool equalRanges(Range A, Range B) {
return A.getOffset() == B.getOffset() && A.getLength() == B.getLength();
}
TEST(ChangedRangesTest, adjustChangedRangesShrink) {
ChangedRanges Changes;
Changes.adjustChangedRanges(makeReplacements(0, 0, 4));
EXPECT_NE(Changes.begin(), Changes.end());
EXPECT_TRUE(equalRanges(Range(0, 4), *Changes.begin()));
// create a replacement that cuts the end of the last insertion
Changes.adjustChangedRanges(makeReplacements(2, 4, 0));
Range ExpectedChanges[] = { Range(0, 2) };
EXPECT_TRUE(
std::equal(Changes.begin(), Changes.end(), ExpectedChanges, equalRanges));
}
TEST(ChangedRangesTest, adjustChangedRangesExtend) {
ChangedRanges Changes;
Changes.adjustChangedRanges(makeReplacements(1, 0, 4));
// cut the old one by a bigger one
Changes.adjustChangedRanges(makeReplacements(3, 4, 6));
Range ExpectedChanges[] = { Range(1, 8) };
EXPECT_TRUE(
std::equal(Changes.begin(), Changes.end(), ExpectedChanges, equalRanges));
}
TEST(ChangedRangesTest, adjustChangedRangesNoOverlap) {
ChangedRanges Changes;
Changes.adjustChangedRanges(makeReplacements(0, 0, 4));
Changes.adjustChangedRanges(makeReplacements(6, 0, 4));
Range ExpectedChanges[] = { Range(0, 4), Range(6, 4) };
EXPECT_TRUE(
std::equal(Changes.begin(), Changes.end(), ExpectedChanges, equalRanges));
}
TEST(ChangedRangesTest, adjustChangedRangesNullRange) {
ChangedRanges Changes;
Changes.adjustChangedRanges(makeReplacements(0, 4, 0));
Range ExpectedChanges[] = { Range(0, 0) };
EXPECT_TRUE(
std::equal(Changes.begin(), Changes.end(), ExpectedChanges, equalRanges));
}
TEST(ChangedRangesTest, adjustChangedRangesExtendExisting) {
ChangedRanges Changes;
Changes.adjustChangedRanges(makeReplacements(0, 0, 3));
Changes.adjustChangedRanges(makeReplacements(2, 5, 8));
Range ExpectedChanges[] = { Range(0, 10) };
EXPECT_TRUE(
std::equal(Changes.begin(), Changes.end(), ExpectedChanges, equalRanges));
}
TEST(ChangedRangesTest, adjustChangedRangesSplit) {
ChangedRanges Changes;
Changes.adjustChangedRanges(makeReplacements(0, 0, 3));
Changes.adjustChangedRanges(makeReplacements(1, 1, 0));
Range ExpectedChanges[] = { Range(0, 2) };
EXPECT_TRUE(
std::equal(Changes.begin(), Changes.end(), ExpectedChanges, equalRanges));
}
TEST(ChangedRangesTest, adjustChangedRangesRangeContained) {
ChangedRanges Changes;
Changes.adjustChangedRanges(makeReplacements(3, 0, 2));
Changes.adjustChangedRanges(makeReplacements(1, 4, 5));
Range ExpectedChanges[] = { Range(1, 5) };
EXPECT_TRUE(
std::equal(Changes.begin(), Changes.end(), ExpectedChanges, equalRanges));
}
TEST(ChangedRangesTest, adjustChangedRangesRangeResized) {
ChangedRanges Changes;
Changes.adjustChangedRanges(makeReplacements(2, 0, 5));
// first make the range bigger
Changes.adjustChangedRanges(makeReplacements(4, 1, 3));
Range ExpectedChanges[] = { Range(2, 7) };
EXPECT_TRUE(
std::equal(Changes.begin(), Changes.end(), ExpectedChanges, equalRanges));
// then smaller
Changes.adjustChangedRanges(makeReplacements(3, 3, 1));
ExpectedChanges[0] = Range(2, 5);
EXPECT_TRUE(
std::equal(Changes.begin(), Changes.end(), ExpectedChanges, equalRanges));
}
TEST(FileOverridesTest, applyOverrides) {
// Set up initial state
VirtualFileHelper VFHelper;
SmallString<128> fileAPath("fileA.cpp");
ASSERT_FALSE(llvm::sys::fs::make_absolute(fileAPath));
SmallString<128> fileBPath("fileB.cpp");
ASSERT_FALSE(llvm::sys::fs::make_absolute(fileBPath));
VFHelper.mapFile(fileAPath, "Content A");
VFHelper.mapFile(fileBPath, "Content B");
SourceManager &SM = VFHelper.getNewSourceManager();
// Fill a Rewriter with changes
Rewriter Rewrites(SM, LangOptions());
ReplacementsVec R(1, Replacement(fileAPath, 0, 7, "Stuff"));
ASSERT_TRUE(applyAllReplacements(R, Rewrites));
FileOverrides Overrides;
Overrides.updateState(Rewrites);
const FileOverrides::FileStateMap &State = Overrides.getState();
// Ensure state updated
ASSERT_TRUE(State.end() == State.find(fileBPath));
ASSERT_TRUE(State.begin() == State.find(fileAPath));
ASSERT_EQ("Stuff A", State.begin()->getValue());
Overrides.applyOverrides(SM);
const FileEntry *EntryA = SM.getFileManager().getFile(fileAPath);
FileID IdA = SM.translateFile(EntryA);
ASSERT_FALSE(IdA.isInvalid());
// Ensure the contents of the buffer matches what we'd expect.
const llvm::MemoryBuffer *BufferA = SM.getBuffer(IdA);
ASSERT_FALSE(0 == BufferA);
ASSERT_EQ("Stuff A", BufferA->getBuffer());
}
TEST(FileOverridesTest, adjustChangedRanges) {
SmallString<128> fileAPath("fileA.cpp");
ASSERT_FALSE(llvm::sys::fs::make_absolute(fileAPath));
SmallString<128> fileBPath("fileB.cpp");
ASSERT_FALSE(llvm::sys::fs::make_absolute(fileBPath));
replace::FileToReplacementsMap GroupedReplacements;
GroupedReplacements[fileAPath] = makeReplacements(0, 5, 4, fileAPath);
GroupedReplacements[fileBPath] = makeReplacements(10, 0, 6, fileBPath);
FileOverrides Overrides;
const FileOverrides::ChangeMap &Map = Overrides.getChangedRanges();
ASSERT_TRUE(Map.empty());
Overrides.adjustChangedRanges(GroupedReplacements);
ASSERT_TRUE(Map.end() != Map.find(fileAPath));
ASSERT_TRUE(Map.end() != Map.find(fileBPath));
const Range &RA = *Map.find(fileAPath)->second.begin();
EXPECT_EQ(0u, RA.getOffset());
EXPECT_EQ(4u, RA.getLength());
const Range &RB = *Map.find(fileBPath)->second.begin();
EXPECT_EQ(10u, RB.getOffset());
EXPECT_EQ(6u, RB.getLength());
}
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