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//===- unittests/Lex/HeaderSearchTest.cpp ------ HeaderSearch tests -------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "clang/Lex/HeaderSearch.h"
#include "HeaderMapTestUtils.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/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/HeaderSearchOptions.h"
#include "clang/Serialization/InMemoryModuleCache.h"
#include "gtest/gtest.h"
namespace clang {
namespace {
// The test fixture.
class HeaderSearchTest : public ::testing::Test {
protected:
HeaderSearchTest()
: VFS(new llvm::vfs::InMemoryFileSystem), FileMgr(FileMgrOpts, VFS),
DiagID(new DiagnosticIDs()),
Diags(DiagID, new DiagnosticOptions, new IgnoringDiagConsumer()),
SourceMgr(Diags, FileMgr), TargetOpts(new TargetOptions),
Search(std::make_shared<HeaderSearchOptions>(), SourceMgr, Diags,
LangOpts, Target.get()) {
TargetOpts->Triple = "x86_64-apple-darwin11.1.0";
Target = TargetInfo::CreateTargetInfo(Diags, TargetOpts);
}
void addSearchDir(llvm::StringRef Dir) {
VFS->addFile(Dir, 0, llvm::MemoryBuffer::getMemBuffer(""), /*User=*/None,
/*Group=*/None, llvm::sys::fs::file_type::directory_file);
auto DE = FileMgr.getOptionalDirectoryRef(Dir);
assert(DE);
auto DL = DirectoryLookup(*DE, SrcMgr::C_User, /*isFramework=*/false);
Search.AddSearchPath(DL, /*isAngled=*/false);
}
void addHeaderMap(llvm::StringRef Filename,
std::unique_ptr<llvm::MemoryBuffer> Buf) {
VFS->addFile(Filename, 0, std::move(Buf), /*User=*/None, /*Group=*/None,
llvm::sys::fs::file_type::regular_file);
auto FE = FileMgr.getFile(Filename, true);
assert(FE);
// Test class supports only one HMap at a time.
assert(!HMap);
HMap = HeaderMap::Create(*FE, FileMgr);
auto DL =
DirectoryLookup(HMap.get(), SrcMgr::C_User, /*isFramework=*/false);
Search.AddSearchPath(DL, /*isAngled=*/false);
}
IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> VFS;
FileSystemOptions FileMgrOpts;
FileManager FileMgr;
IntrusiveRefCntPtr<DiagnosticIDs> DiagID;
DiagnosticsEngine Diags;
SourceManager SourceMgr;
LangOptions LangOpts;
std::shared_ptr<TargetOptions> TargetOpts;
IntrusiveRefCntPtr<TargetInfo> Target;
HeaderSearch Search;
std::unique_ptr<HeaderMap> HMap;
};
TEST_F(HeaderSearchTest, NoSearchDir) {
EXPECT_EQ(Search.search_dir_size(), 0u);
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/x/y/z", /*WorkingDir=*/"",
/*MainFile=*/""),
"/x/y/z");
}
TEST_F(HeaderSearchTest, SimpleShorten) {
addSearchDir("/x");
addSearchDir("/x/y");
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/x/y/z", /*WorkingDir=*/"",
/*MainFile=*/""),
"z");
addSearchDir("/a/b/");
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/a/b/c", /*WorkingDir=*/"",
/*MainFile=*/""),
"c");
}
TEST_F(HeaderSearchTest, ShortenWithWorkingDir) {
addSearchDir("x/y");
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/a/b/c/x/y/z",
/*WorkingDir=*/"/a/b/c",
/*MainFile=*/""),
"z");
}
TEST_F(HeaderSearchTest, Dots) {
addSearchDir("/x/./y/");
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/x/y/./z",
/*WorkingDir=*/"",
/*MainFile=*/""),
"z");
addSearchDir("a/.././c/");
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/m/n/./c/z",
/*WorkingDir=*/"/m/n/",
/*MainFile=*/""),
"z");
}
#ifdef _WIN32
TEST_F(HeaderSearchTest, BackSlash) {
addSearchDir("C:\\x\\y\\");
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("C:\\x\\y\\z\\t",
/*WorkingDir=*/"",
/*MainFile=*/""),
"z/t");
}
TEST_F(HeaderSearchTest, BackSlashWithDotDot) {
addSearchDir("..\\y");
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("C:\\x\\y\\z\\t",
/*WorkingDir=*/"C:/x/y/",
/*MainFile=*/""),
"z/t");
}
#endif
TEST_F(HeaderSearchTest, DotDotsWithAbsPath) {
addSearchDir("/x/../y/");
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/y/z",
/*WorkingDir=*/"",
/*MainFile=*/""),
"z");
}
TEST_F(HeaderSearchTest, IncludeFromSameDirectory) {
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/y/z/t.h",
/*WorkingDir=*/"",
/*MainFile=*/"/y/a.cc"),
"z/t.h");
addSearchDir("/");
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/y/z/t.h",
/*WorkingDir=*/"",
/*MainFile=*/"/y/a.cc"),
"y/z/t.h");
}
// Helper struct with null terminator character to make MemoryBuffer happy.
template <class FileTy, class PaddingTy>
struct NullTerminatedFile : public FileTy {
PaddingTy Padding = 0;
};
TEST_F(HeaderSearchTest, HeaderMapReverseLookup) {
typedef NullTerminatedFile<test::HMapFileMock<2, 32>, char> FileTy;
FileTy File;
File.init();
test::HMapFileMockMaker<FileTy> Maker(File);
auto a = Maker.addString("d.h");
auto b = Maker.addString("b/");
auto c = Maker.addString("c.h");
Maker.addBucket("d.h", a, b, c);
addHeaderMap("/x/y/z.hmap", File.getBuffer());
addSearchDir("/a");
EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/a/b/c.h",
/*WorkingDir=*/"",
/*MainFile=*/""),
"d.h");
}
} // namespace
} // namespace clang
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