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llvm-project/llvm/unittests/Support/Path.cpp

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//===- llvm/unittest/Support/Path.cpp - Path tests ------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/PathV2.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace llvm::sys;
#define ASSERT_NO_ERROR(x) \
if (error_code ASSERT_NO_ERROR_ec = x) { \
SmallString<128> MessageStorage; \
raw_svector_ostream Message(MessageStorage); \
Message << #x ": did not return errc::success.\n" \
<< "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \
<< "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \
GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \
} else {}
namespace {
TEST(is_separator, Works) {
EXPECT_TRUE(path::is_separator('/'));
EXPECT_FALSE(path::is_separator('\0'));
EXPECT_FALSE(path::is_separator('-'));
EXPECT_FALSE(path::is_separator(' '));
#ifdef LLVM_ON_WIN32
EXPECT_TRUE(path::is_separator('\\'));
#else
EXPECT_FALSE(path::is_separator('\\'));
#endif
}
TEST(Support, Path) {
SmallVector<StringRef, 40> paths;
paths.push_back("");
paths.push_back(".");
paths.push_back("..");
paths.push_back("foo");
paths.push_back("/");
paths.push_back("/foo");
paths.push_back("foo/");
paths.push_back("/foo/");
paths.push_back("foo/bar");
paths.push_back("/foo/bar");
paths.push_back("//net");
paths.push_back("//net/foo");
paths.push_back("///foo///");
paths.push_back("///foo///bar");
paths.push_back("/.");
paths.push_back("./");
paths.push_back("/..");
paths.push_back("../");
paths.push_back("foo/.");
paths.push_back("foo/..");
paths.push_back("foo/./");
paths.push_back("foo/./bar");
paths.push_back("foo/..");
paths.push_back("foo/../");
paths.push_back("foo/../bar");
paths.push_back("c:");
paths.push_back("c:/");
paths.push_back("c:foo");
paths.push_back("c:/foo");
paths.push_back("c:foo/");
paths.push_back("c:/foo/");
paths.push_back("c:/foo/bar");
paths.push_back("prn:");
paths.push_back("c:\\");
paths.push_back("c:foo");
paths.push_back("c:\\foo");
paths.push_back("c:foo\\");
paths.push_back("c:\\foo\\");
paths.push_back("c:\\foo/");
paths.push_back("c:/foo\\bar");
for (SmallVector<StringRef, 40>::const_iterator i = paths.begin(),
e = paths.end();
i != e;
++i) {
for (sys::path::const_iterator ci = sys::path::begin(*i),
ce = sys::path::end(*i);
ci != ce;
++ci) {
ASSERT_FALSE(ci->empty());
}
#if 0 // Valgrind is whining about this.
outs() << " Reverse Iteration: [";
for (sys::path::reverse_iterator ci = sys::path::rbegin(*i),
ce = sys::path::rend(*i);
ci != ce;
++ci) {
outs() << *ci << ',';
}
outs() << "]\n";
#endif
path::has_root_path(*i);
path::root_path(*i);
path::has_root_name(*i);
path::root_name(*i);
path::has_root_directory(*i);
path::root_directory(*i);
path::has_parent_path(*i);
path::parent_path(*i);
path::has_filename(*i);
path::filename(*i);
path::has_stem(*i);
path::stem(*i);
path::has_extension(*i);
path::extension(*i);
path::is_absolute(*i);
path::is_relative(*i);
SmallString<128> temp_store;
temp_store = *i;
ASSERT_NO_ERROR(fs::make_absolute(temp_store));
temp_store = *i;
path::remove_filename(temp_store);
temp_store = *i;
path::replace_extension(temp_store, "ext");
StringRef filename(temp_store.begin(), temp_store.size()), stem, ext;
stem = path::stem(filename);
ext = path::extension(filename);
EXPECT_EQ(*(--sys::path::end(filename)), (stem + ext).str());
path::native(*i, temp_store);
}
}
class FileSystemTest : public testing::Test {
protected:
/// Unique temporary directory in which all created filesystem entities must
/// be placed. It is recursively removed at the end of each test.
SmallString<128> TestDirectory;
virtual void SetUp() {
int fd;
ASSERT_NO_ERROR(
fs::unique_file("file-system-test-%%-%%-%%-%%/test-directory.anchor", fd,
TestDirectory));
// We don't care about this specific file.
::close(fd);
TestDirectory = path::parent_path(TestDirectory);
errs() << "Test Directory: " << TestDirectory << '\n';
errs().flush();
}
virtual void TearDown() {
uint32_t removed;
ASSERT_NO_ERROR(fs::remove_all(TestDirectory.str(), removed));
}
};
TEST_F(FileSystemTest, TempFiles) {
// Create a temp file.
int FileDescriptor;
SmallString<64> TempPath;
ASSERT_NO_ERROR(
fs::unique_file("%%-%%-%%-%%.temp", FileDescriptor, TempPath));
// Make sure it exists.
bool TempFileExists;
ASSERT_NO_ERROR(sys::fs::exists(Twine(TempPath), TempFileExists));
EXPECT_TRUE(TempFileExists);
// Create another temp tile.
int FD2;
SmallString<64> TempPath2;
ASSERT_NO_ERROR(fs::unique_file("%%-%%-%%-%%.temp", FD2, TempPath2));
ASSERT_NE(TempPath.str(), TempPath2.str());
fs::file_status A, B;
ASSERT_NO_ERROR(fs::status(Twine(TempPath), A));
ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B));
EXPECT_FALSE(fs::equivalent(A, B));
// Try to copy the first to the second.
EXPECT_EQ(
fs::copy_file(Twine(TempPath), Twine(TempPath2)), errc::file_exists);
::close(FD2);
// Try again with the proper options.
ASSERT_NO_ERROR(fs::copy_file(Twine(TempPath), Twine(TempPath2),
fs::copy_option::overwrite_if_exists));
// Remove Temp2.
ASSERT_NO_ERROR(fs::remove(Twine(TempPath2), TempFileExists));
EXPECT_TRUE(TempFileExists);
// Make sure Temp2 doesn't exist.
ASSERT_NO_ERROR(fs::exists(Twine(TempPath2), TempFileExists));
EXPECT_FALSE(TempFileExists);
// Create a hard link to Temp1.
ASSERT_NO_ERROR(fs::create_hard_link(Twine(TempPath), Twine(TempPath2)));
bool equal;
ASSERT_NO_ERROR(fs::equivalent(Twine(TempPath), Twine(TempPath2), equal));
EXPECT_TRUE(equal);
ASSERT_NO_ERROR(fs::status(Twine(TempPath), A));
ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B));
EXPECT_TRUE(fs::equivalent(A, B));
// Remove Temp1.
::close(FileDescriptor);
ASSERT_NO_ERROR(fs::remove(Twine(TempPath), TempFileExists));
EXPECT_TRUE(TempFileExists);
// Remove the hard link.
ASSERT_NO_ERROR(fs::remove(Twine(TempPath2), TempFileExists));
EXPECT_TRUE(TempFileExists);
// Make sure Temp1 doesn't exist.
ASSERT_NO_ERROR(fs::exists(Twine(TempPath), TempFileExists));
EXPECT_FALSE(TempFileExists);
}
TEST_F(FileSystemTest, DirectoryIteration) {
error_code ec;
for (fs::directory_iterator i(".", ec), e; i != e; i.increment(ec))
ASSERT_NO_ERROR(ec);
// Create a known hierarchy to recurse over.
bool existed;
ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory)
+ "/recursive/a0/aa1", existed));
ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory)
+ "/recursive/a0/ab1", existed));
ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory)
+ "/recursive/dontlookhere/da1", existed));
ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory)
+ "/recursive/z0/za1", existed));
ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory)
+ "/recursive/pop/p1", existed));
typedef std::vector<std::string> v_t;
v_t visited;
for (fs::recursive_directory_iterator i(Twine(TestDirectory)
+ "/recursive", ec), e; i != e; i.increment(ec)){
ASSERT_NO_ERROR(ec);
if (path::filename(i->path()) == "p1") {
i.pop();
// FIXME: recursive_directory_iterator should be more robust.
if (i == e) break;
}
if (path::filename(i->path()) == "dontlookhere")
i.no_push();
visited.push_back(path::filename(i->path()));
}
v_t::const_iterator a0 = std::find(visited.begin(), visited.end(), "a0");
v_t::const_iterator aa1 = std::find(visited.begin(), visited.end(), "aa1");
v_t::const_iterator ab1 = std::find(visited.begin(), visited.end(), "ab1");
v_t::const_iterator dontlookhere = std::find(visited.begin(), visited.end(),
"dontlookhere");
v_t::const_iterator da1 = std::find(visited.begin(), visited.end(), "da1");
v_t::const_iterator z0 = std::find(visited.begin(), visited.end(), "z0");
v_t::const_iterator za1 = std::find(visited.begin(), visited.end(), "za1");
v_t::const_iterator pop = std::find(visited.begin(), visited.end(), "pop");
v_t::const_iterator p1 = std::find(visited.begin(), visited.end(), "p1");
// Make sure that each path was visited correctly.
ASSERT_NE(a0, visited.end());
ASSERT_NE(aa1, visited.end());
ASSERT_NE(ab1, visited.end());
ASSERT_NE(dontlookhere, visited.end());
ASSERT_EQ(da1, visited.end()); // Not visited.
ASSERT_NE(z0, visited.end());
ASSERT_NE(za1, visited.end());
ASSERT_NE(pop, visited.end());
ASSERT_EQ(p1, visited.end()); // Not visited.
// Make sure that parents were visited before children. No other ordering
// guarantees can be made across siblings.
ASSERT_LT(a0, aa1);
ASSERT_LT(a0, ab1);
ASSERT_LT(z0, za1);
}
TEST_F(FileSystemTest, Magic) {
struct type {
const char *filename;
const char *magic_str;
size_t magic_str_len;
} types [] = {{"magic.archive", "!<arch>\x0A", 8}};
// Create some files filled with magic.
for (type *i = types, *e = types + (sizeof(types) / sizeof(type)); i != e;
++i) {
SmallString<128> file_pathname(TestDirectory);
path::append(file_pathname, i->filename);
std::string ErrMsg;
raw_fd_ostream file(file_pathname.c_str(), ErrMsg,
raw_fd_ostream::F_Binary);
ASSERT_FALSE(file.has_error());
StringRef magic(i->magic_str, i->magic_str_len);
file << magic;
file.close();
bool res = false;
ASSERT_NO_ERROR(fs::has_magic(file_pathname.c_str(), magic, res));
EXPECT_TRUE(res);
}
}
#if !defined(_WIN32) // FIXME: Win32 has different permission schema.
TEST_F(FileSystemTest, Permissions) {
// Create a temp file.
int FileDescriptor;
SmallString<64> TempPath;
ASSERT_NO_ERROR(
fs::unique_file("%%-%%-%%-%%.temp", FileDescriptor, TempPath));
// Mark file as read-only
const fs::perms AllWrite = fs::owner_write|fs::group_write|fs::others_write;
ASSERT_NO_ERROR(fs::permissions(Twine(TempPath), fs::remove_perms|AllWrite));
// Verify file is read-only
fs::file_status Status;
ASSERT_NO_ERROR(fs::status(Twine(TempPath), Status));
bool AnyWriteBits = (Status.permissions() & AllWrite);
EXPECT_FALSE(AnyWriteBits);
// Mark file as read-write
ASSERT_NO_ERROR(fs::permissions(Twine(TempPath), fs::add_perms|AllWrite));
// Verify file is read-write
ASSERT_NO_ERROR(fs::status(Twine(TempPath), Status));
AnyWriteBits = (Status.permissions() & AllWrite);
EXPECT_TRUE(AnyWriteBits);
}
#endif
TEST_F(FileSystemTest, FileMapping) {
// Create a temp file.
int FileDescriptor;
SmallString<64> TempPath;
ASSERT_NO_ERROR(
fs::unique_file("%%-%%-%%-%%.temp", FileDescriptor, TempPath));
// Map in temp file and add some content
error_code EC;
StringRef Val("hello there");
{
fs::mapped_file_region mfr(FileDescriptor,
fs::mapped_file_region::readwrite,
4096,
0,
EC);
ASSERT_NO_ERROR(EC);
std::copy(Val.begin(), Val.end(), mfr.data());
// Explicitly add a 0.
mfr.data()[Val.size()] = 0;
// Unmap temp file
}
// Map it back in read-only
fs::mapped_file_region mfr(Twine(TempPath),
fs::mapped_file_region::readonly,
0,
0,
EC);
ASSERT_NO_ERROR(EC);
// Verify content
EXPECT_EQ(StringRef(mfr.const_data()), Val);
// Unmap temp file
#if LLVM_USE_RVALUE_REFERENCES
fs::mapped_file_region m(Twine(TempPath),
fs::mapped_file_region::readonly,
0,
0,
EC);
ASSERT_NO_ERROR(EC);
const char *Data = m.const_data();
fs::mapped_file_region mfrrv(llvm_move(m));
EXPECT_EQ(mfrrv.const_data(), Data);
#endif
}
} // anonymous namespace
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