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file_util_unittest.cc
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <stdint.h>
#include <algorithm>
#include <fstream>
#include <set>
#include <utility>
#include <vector>
#include "base/base_paths.h"
#include "base/environment.h"
#include "base/files/file_enumerator.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/files/scoped_file.h"
#include "base/files/scoped_temp_dir.h"
#include "base/macros.h"
#include "base/path_service.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/test_file_util.h"
#include "base/threading/platform_thread.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/platform_test.h"
#if defined(OS_WIN)
#include <windows.h>
#include <shellapi.h>
#include <shlobj.h>
#include <tchar.h>
#include <winioctl.h>
#include "base/win/scoped_handle.h"
#include "base/win/windows_version.h"
#endif
#if defined(OS_POSIX)
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#endif
#if defined(OS_ANDROID)
#include "base/android/content_uri_utils.h"
#endif
// This macro helps avoid wrapped lines in the test structs.
#define FPL(x) FILE_PATH_LITERAL(x)
namespace base {
namespace {
// To test that NormalizeFilePath() deals with NTFS reparse points correctly,
// we need functions to create and delete reparse points.
#if defined(OS_WIN)
typedef struct _REPARSE_DATA_BUFFER {
ULONG ReparseTag;
USHORT ReparseDataLength;
USHORT Reserved;
union {
struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
ULONG Flags;
WCHAR PathBuffer[1];
} SymbolicLinkReparseBuffer;
struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
WCHAR PathBuffer[1];
} MountPointReparseBuffer;
struct {
UCHAR DataBuffer[1];
} GenericReparseBuffer;
};
} REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;
// Sets a reparse point. |source| will now point to |target|. Returns true if
// the call succeeds, false otherwise.
bool SetReparsePoint(HANDLE source, const FilePath& target_path) {
std::wstring kPathPrefix = L"\\??\\";
std::wstring target_str;
// The juction will not work if the target path does not start with \??\ .
if (kPathPrefix != target_path.value().substr(0, kPathPrefix.size()))
target_str += kPathPrefix;
target_str += target_path.value();
const wchar_t* target = target_str.c_str();
USHORT size_target = static_cast<USHORT>(wcslen(target)) * sizeof(target[0]);
char buffer[2000] = {0};
DWORD returned;
REPARSE_DATA_BUFFER* data = reinterpret_cast<REPARSE_DATA_BUFFER*>(buffer);
data->ReparseTag = 0xa0000003;
memcpy(data->MountPointReparseBuffer.PathBuffer, target, size_target + 2);
data->MountPointReparseBuffer.SubstituteNameLength = size_target;
data->MountPointReparseBuffer.PrintNameOffset = size_target + 2;
data->ReparseDataLength = size_target + 4 + 8;
int data_size = data->ReparseDataLength + 8;
if (!DeviceIoControl(source, FSCTL_SET_REPARSE_POINT, &buffer, data_size,
NULL, 0, &returned, NULL)) {
return false;
}
return true;
}
// Delete the reparse point referenced by |source|. Returns true if the call
// succeeds, false otherwise.
bool DeleteReparsePoint(HANDLE source) {
DWORD returned;
REPARSE_DATA_BUFFER data = {0};
data.ReparseTag = 0xa0000003;
if (!DeviceIoControl(source, FSCTL_DELETE_REPARSE_POINT, &data, 8, NULL, 0,
&returned, NULL)) {
return false;
}
return true;
}
// Manages a reparse point for a test.
class ReparsePoint {
public:
// Creates a reparse point from |source| (an empty directory) to |target|.
ReparsePoint(const FilePath& source, const FilePath& target) {
dir_.Set(
::CreateFile(source.value().c_str(),
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
NULL,
OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS, // Needed to open a directory.
NULL));
created_ = dir_.IsValid() && SetReparsePoint(dir_.Get(), target);
}
~ReparsePoint() {
if (created_)
DeleteReparsePoint(dir_.Get());
}
bool IsValid() { return created_; }
private:
win::ScopedHandle dir_;
bool created_;
DISALLOW_COPY_AND_ASSIGN(ReparsePoint);
};
#endif
#if defined(OS_POSIX)
// Provide a simple way to change the permissions bits on |path| in tests.
// ASSERT failures will return, but not stop the test. Caller should wrap
// calls to this function in ASSERT_NO_FATAL_FAILURE().
void ChangePosixFilePermissions(const FilePath& path,
int mode_bits_to_set,
int mode_bits_to_clear) {
ASSERT_FALSE(mode_bits_to_set & mode_bits_to_clear)
<< "Can't set and clear the same bits.";
int mode = 0;
ASSERT_TRUE(GetPosixFilePermissions(path, &mode));
mode |= mode_bits_to_set;
mode &= ~mode_bits_to_clear;
ASSERT_TRUE(SetPosixFilePermissions(path, mode));
}
#endif // defined(OS_POSIX)
const wchar_t bogus_content[] = L"I'm cannon fodder.";
const int FILES_AND_DIRECTORIES =
FileEnumerator::FILES | FileEnumerator::DIRECTORIES;
// file_util winds up using autoreleased objects on the Mac, so this needs
// to be a PlatformTest
class FileUtilTest : public PlatformTest {
protected:
void SetUp() override {
PlatformTest::SetUp();
ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
}
ScopedTempDir temp_dir_;
};
// Collects all the results from the given file enumerator, and provides an
// interface to query whether a given file is present.
class FindResultCollector {
public:
explicit FindResultCollector(FileEnumerator* enumerator) {
FilePath cur_file;
while (!(cur_file = enumerator->Next()).value().empty()) {
FilePath::StringType path = cur_file.value();
// The file should not be returned twice.
EXPECT_TRUE(files_.end() == files_.find(path))
<< "Same file returned twice";
// Save for later.
files_.insert(path);
}
}
// Returns true if the enumerator found the file.
bool HasFile(const FilePath& file) const {
return files_.find(file.value()) != files_.end();
}
int size() {
return static_cast<int>(files_.size());
}
private:
std::set<FilePath::StringType> files_;
};
// Simple function to dump some text into a new file.
void CreateTextFile(const FilePath& filename,
const std::wstring& contents) {
std::wofstream file;
file.open(filename.value().c_str());
ASSERT_TRUE(file.is_open());
file << contents;
file.close();
}
// Simple function to take out some text from a file.
std::wstring ReadTextFile(const FilePath& filename) {
wchar_t contents[64];
std::wifstream file;
file.open(filename.value().c_str());
EXPECT_TRUE(file.is_open());
file.getline(contents, arraysize(contents));
file.close();
return std::wstring(contents);
}
TEST_F(FileUtilTest, FileAndDirectorySize) {
// Create three files of 20, 30 and 3 chars (utf8). ComputeDirectorySize
// should return 53 bytes.
FilePath file_01 = temp_dir_.GetPath().Append(FPL("The file 01.txt"));
CreateTextFile(file_01, L"12345678901234567890");
int64_t size_f1 = 0;
ASSERT_TRUE(GetFileSize(file_01, &size_f1));
EXPECT_EQ(20ll, size_f1);
FilePath subdir_path = temp_dir_.GetPath().Append(FPL("Level2"));
CreateDirectory(subdir_path);
FilePath file_02 = subdir_path.Append(FPL("The file 02.txt"));
CreateTextFile(file_02, L"123456789012345678901234567890");
int64_t size_f2 = 0;
ASSERT_TRUE(GetFileSize(file_02, &size_f2));
EXPECT_EQ(30ll, size_f2);
FilePath subsubdir_path = subdir_path.Append(FPL("Level3"));
CreateDirectory(subsubdir_path);
FilePath file_03 = subsubdir_path.Append(FPL("The file 03.txt"));
CreateTextFile(file_03, L"123");
int64_t computed_size = ComputeDirectorySize(temp_dir_.GetPath());
EXPECT_EQ(size_f1 + size_f2 + 3, computed_size);
}
TEST_F(FileUtilTest, NormalizeFilePathBasic) {
// Create a directory under the test dir. Because we create it,
// we know it is not a link.
FilePath file_a_path = temp_dir_.GetPath().Append(FPL("file_a"));
FilePath dir_path = temp_dir_.GetPath().Append(FPL("dir"));
FilePath file_b_path = dir_path.Append(FPL("file_b"));
CreateDirectory(dir_path);
FilePath normalized_file_a_path, normalized_file_b_path;
ASSERT_FALSE(PathExists(file_a_path));
ASSERT_FALSE(NormalizeFilePath(file_a_path, &normalized_file_a_path))
<< "NormalizeFilePath() should fail on nonexistent paths.";
CreateTextFile(file_a_path, bogus_content);
ASSERT_TRUE(PathExists(file_a_path));
ASSERT_TRUE(NormalizeFilePath(file_a_path, &normalized_file_a_path));
CreateTextFile(file_b_path, bogus_content);
ASSERT_TRUE(PathExists(file_b_path));
ASSERT_TRUE(NormalizeFilePath(file_b_path, &normalized_file_b_path));
// Beacuse this test created |dir_path|, we know it is not a link
// or junction. So, the real path of the directory holding file a
// must be the parent of the path holding file b.
ASSERT_TRUE(normalized_file_a_path.DirName()
.IsParent(normalized_file_b_path.DirName()));
}
#if defined(OS_WIN)
TEST_F(FileUtilTest, NormalizeFilePathReparsePoints) {
// Build the following directory structure:
//
// temp_dir
// |-> base_a
// | |-> sub_a
// | |-> file.txt
// | |-> long_name___... (Very long name.)
// | |-> sub_long
// | |-> deep.txt
// |-> base_b
// |-> to_sub_a (reparse point to temp_dir\base_a\sub_a)
// |-> to_base_b (reparse point to temp_dir\base_b)
// |-> to_sub_long (reparse point to temp_dir\sub_a\long_name_\sub_long)
FilePath base_a = temp_dir_.GetPath().Append(FPL("base_a"));
#if defined(OS_WIN)
// TEMP can have a lower case drive letter.
string16 temp_base_a = base_a.value();
ASSERT_FALSE(temp_base_a.empty());
*temp_base_a.begin() = ToUpperASCII(*temp_base_a.begin());
base_a = FilePath(temp_base_a);
#endif
ASSERT_TRUE(CreateDirectory(base_a));
FilePath sub_a = base_a.Append(FPL("sub_a"));
ASSERT_TRUE(CreateDirectory(sub_a));
FilePath file_txt = sub_a.Append(FPL("file.txt"));
CreateTextFile(file_txt, bogus_content);
// Want a directory whose name is long enough to make the path to the file
// inside just under MAX_PATH chars. This will be used to test that when
// a junction expands to a path over MAX_PATH chars in length,
// NormalizeFilePath() fails without crashing.
FilePath sub_long_rel(FPL("sub_long"));
FilePath deep_txt(FPL("deep.txt"));
int target_length = MAX_PATH;
target_length -= (sub_a.value().length() + 1); // +1 for the sepperator '\'.
target_length -= (sub_long_rel.Append(deep_txt).value().length() + 1);
// Without making the path a bit shorter, CreateDirectory() fails.
// the resulting path is still long enough to hit the failing case in
// NormalizePath().
const int kCreateDirLimit = 4;
target_length -= kCreateDirLimit;
FilePath::StringType long_name_str = FPL("long_name_");
long_name_str.resize(target_length, '_');
FilePath long_name = sub_a.Append(FilePath(long_name_str));
FilePath deep_file = long_name.Append(sub_long_rel).Append(deep_txt);
ASSERT_EQ(static_cast<size_t>(MAX_PATH - kCreateDirLimit),
deep_file.value().length());
FilePath sub_long = deep_file.DirName();
ASSERT_TRUE(CreateDirectory(sub_long));
CreateTextFile(deep_file, bogus_content);
FilePath base_b = temp_dir_.GetPath().Append(FPL("base_b"));
ASSERT_TRUE(CreateDirectory(base_b));
FilePath to_sub_a = base_b.Append(FPL("to_sub_a"));
ASSERT_TRUE(CreateDirectory(to_sub_a));
FilePath normalized_path;
{
ReparsePoint reparse_to_sub_a(to_sub_a, sub_a);
ASSERT_TRUE(reparse_to_sub_a.IsValid());
FilePath to_base_b = base_b.Append(FPL("to_base_b"));
ASSERT_TRUE(CreateDirectory(to_base_b));
ReparsePoint reparse_to_base_b(to_base_b, base_b);
ASSERT_TRUE(reparse_to_base_b.IsValid());
FilePath to_sub_long = base_b.Append(FPL("to_sub_long"));
ASSERT_TRUE(CreateDirectory(to_sub_long));
ReparsePoint reparse_to_sub_long(to_sub_long, sub_long);
ASSERT_TRUE(reparse_to_sub_long.IsValid());
// Normalize a junction free path: base_a\sub_a\file.txt .
ASSERT_TRUE(NormalizeFilePath(file_txt, &normalized_path));
ASSERT_STREQ(file_txt.value().c_str(), normalized_path.value().c_str());
// Check that the path base_b\to_sub_a\file.txt can be normalized to exclude
// the junction to_sub_a.
ASSERT_TRUE(NormalizeFilePath(to_sub_a.Append(FPL("file.txt")),
&normalized_path));
ASSERT_STREQ(file_txt.value().c_str(), normalized_path.value().c_str());
// Check that the path base_b\to_base_b\to_base_b\to_sub_a\file.txt can be
// normalized to exclude junctions to_base_b and to_sub_a .
ASSERT_TRUE(NormalizeFilePath(base_b.Append(FPL("to_base_b"))
.Append(FPL("to_base_b"))
.Append(FPL("to_sub_a"))
.Append(FPL("file.txt")),
&normalized_path));
ASSERT_STREQ(file_txt.value().c_str(), normalized_path.value().c_str());
// A long enough path will cause NormalizeFilePath() to fail. Make a long
// path using to_base_b many times, and check that paths long enough to fail
// do not cause a crash.
FilePath long_path = base_b;
const int kLengthLimit = MAX_PATH + 200;
while (long_path.value().length() <= kLengthLimit) {
long_path = long_path.Append(FPL("to_base_b"));
}
long_path = long_path.Append(FPL("to_sub_a"))
.Append(FPL("file.txt"));
ASSERT_FALSE(NormalizeFilePath(long_path, &normalized_path));
// Normalizing the junction to deep.txt should fail, because the expanded
// path to deep.txt is longer than MAX_PATH.
ASSERT_FALSE(NormalizeFilePath(to_sub_long.Append(deep_txt),
&normalized_path));
// Delete the reparse points, and see that NormalizeFilePath() fails
// to traverse them.
}
ASSERT_FALSE(NormalizeFilePath(to_sub_a.Append(FPL("file.txt")),
&normalized_path));
}
TEST_F(FileUtilTest, DevicePathToDriveLetter) {
// Get a drive letter.
string16 real_drive_letter =
ToUpperASCII(temp_dir_.GetPath().value().substr(0, 2));
if (!isalpha(real_drive_letter[0]) || ':' != real_drive_letter[1]) {
LOG(ERROR) << "Can't get a drive letter to test with.";
return;
}
// Get the NT style path to that drive.
wchar_t device_path[MAX_PATH] = {'\0'};
ASSERT_TRUE(
::QueryDosDevice(real_drive_letter.c_str(), device_path, MAX_PATH));
FilePath actual_device_path(device_path);
FilePath win32_path;
// Run DevicePathToDriveLetterPath() on the NT style path we got from
// QueryDosDevice(). Expect the drive letter we started with.
ASSERT_TRUE(DevicePathToDriveLetterPath(actual_device_path, &win32_path));
ASSERT_EQ(real_drive_letter, win32_path.value());
// Add some directories to the path. Expect those extra path componenets
// to be preserved.
FilePath kRelativePath(FPL("dir1\\dir2\\file.txt"));
ASSERT_TRUE(DevicePathToDriveLetterPath(
actual_device_path.Append(kRelativePath),
&win32_path));
EXPECT_EQ(FilePath(real_drive_letter + L"\\").Append(kRelativePath).value(),
win32_path.value());
// Deform the real path so that it is invalid by removing the last four
// characters. The way windows names devices that are hard disks
// (\Device\HardDiskVolume${NUMBER}) guarantees that the string is longer
// than three characters. The only way the truncated string could be a
// real drive is if more than 10^3 disks are mounted:
// \Device\HardDiskVolume10000 would be truncated to \Device\HardDiskVolume1
// Check that DevicePathToDriveLetterPath fails.
int path_length = actual_device_path.value().length();
int new_length = path_length - 4;
ASSERT_LT(0, new_length);
FilePath prefix_of_real_device_path(
actual_device_path.value().substr(0, new_length));
ASSERT_FALSE(DevicePathToDriveLetterPath(prefix_of_real_device_path,
&win32_path));
ASSERT_FALSE(DevicePathToDriveLetterPath(
prefix_of_real_device_path.Append(kRelativePath),
&win32_path));
// Deform the real path so that it is invalid by adding some characters. For
// example, if C: maps to \Device\HardDiskVolume8, then we simulate a
// request for the drive letter whose native path is
// \Device\HardDiskVolume812345 . We assume such a device does not exist,
// because drives are numbered in order and mounting 112345 hard disks will
// never happen.
const FilePath::StringType kExtraChars = FPL("12345");
FilePath real_device_path_plus_numbers(
actual_device_path.value() + kExtraChars);
ASSERT_FALSE(DevicePathToDriveLetterPath(
real_device_path_plus_numbers,
&win32_path));
ASSERT_FALSE(DevicePathToDriveLetterPath(
real_device_path_plus_numbers.Append(kRelativePath),
&win32_path));
}
TEST_F(FileUtilTest, CreateTemporaryFileInDirLongPathTest) {
// Test that CreateTemporaryFileInDir() creates a path and returns a long path
// if it is available. This test requires that:
// - the filesystem at |temp_dir_| supports long filenames.
// - the account has FILE_LIST_DIRECTORY permission for all ancestor
// directories of |temp_dir_|.
const FilePath::CharType kLongDirName[] = FPL("A long path");
const FilePath::CharType kTestSubDirName[] = FPL("test");
FilePath long_test_dir = temp_dir_.GetPath().Append(kLongDirName);
ASSERT_TRUE(CreateDirectory(long_test_dir));
// kLongDirName is not a 8.3 component. So GetShortName() should give us a
// different short name.
WCHAR path_buffer[MAX_PATH];
DWORD path_buffer_length = GetShortPathName(long_test_dir.value().c_str(),
path_buffer, MAX_PATH);
ASSERT_LT(path_buffer_length, DWORD(MAX_PATH));
ASSERT_NE(DWORD(0), path_buffer_length);
FilePath short_test_dir(path_buffer);
ASSERT_STRNE(kLongDirName, short_test_dir.BaseName().value().c_str());
FilePath temp_file;
ASSERT_TRUE(CreateTemporaryFileInDir(short_test_dir, &temp_file));
EXPECT_STREQ(kLongDirName, temp_file.DirName().BaseName().value().c_str());
EXPECT_TRUE(PathExists(temp_file));
// Create a subdirectory of |long_test_dir| and make |long_test_dir|
// unreadable. We should still be able to create a temp file in the
// subdirectory, but we won't be able to determine the long path for it. This
// mimics the environment that some users run where their user profiles reside
// in a location where the don't have full access to the higher level
// directories. (Note that this assumption is true for NTFS, but not for some
// network file systems. E.g. AFS).
FilePath access_test_dir = long_test_dir.Append(kTestSubDirName);
ASSERT_TRUE(CreateDirectory(access_test_dir));
FilePermissionRestorer long_test_dir_restorer(long_test_dir);
ASSERT_TRUE(MakeFileUnreadable(long_test_dir));
// Use the short form of the directory to create a temporary filename.
ASSERT_TRUE(CreateTemporaryFileInDir(
short_test_dir.Append(kTestSubDirName), &temp_file));
EXPECT_TRUE(PathExists(temp_file));
EXPECT_TRUE(short_test_dir.IsParent(temp_file.DirName()));
// Check that the long path can't be determined for |temp_file|.
path_buffer_length = GetLongPathName(temp_file.value().c_str(),
path_buffer, MAX_PATH);
EXPECT_EQ(DWORD(0), path_buffer_length);
}
#endif // defined(OS_WIN)
#if defined(OS_POSIX)
TEST_F(FileUtilTest, CreateAndReadSymlinks) {
FilePath link_from = temp_dir_.GetPath().Append(FPL("from_file"));
FilePath link_to = temp_dir_.GetPath().Append(FPL("to_file"));
CreateTextFile(link_to, bogus_content);
ASSERT_TRUE(CreateSymbolicLink(link_to, link_from))
<< "Failed to create file symlink.";
// If we created the link properly, we should be able to read the contents
// through it.
std::wstring contents = ReadTextFile(link_from);
EXPECT_EQ(bogus_content, contents);
FilePath result;
ASSERT_TRUE(ReadSymbolicLink(link_from, &result));
EXPECT_EQ(link_to.value(), result.value());
// Link to a directory.
link_from = temp_dir_.GetPath().Append(FPL("from_dir"));
link_to = temp_dir_.GetPath().Append(FPL("to_dir"));
ASSERT_TRUE(CreateDirectory(link_to));
ASSERT_TRUE(CreateSymbolicLink(link_to, link_from))
<< "Failed to create directory symlink.";
// Test failures.
EXPECT_FALSE(CreateSymbolicLink(link_to, link_to));
EXPECT_FALSE(ReadSymbolicLink(link_to, &result));
FilePath missing = temp_dir_.GetPath().Append(FPL("missing"));
EXPECT_FALSE(ReadSymbolicLink(missing, &result));
}
// The following test of NormalizeFilePath() require that we create a symlink.
// This can not be done on Windows before Vista. On Vista, creating a symlink
// requires privilege "SeCreateSymbolicLinkPrivilege".
// TODO(skerner): Investigate the possibility of giving base_unittests the
// privileges required to create a symlink.
TEST_F(FileUtilTest, NormalizeFilePathSymlinks) {
// Link one file to another.
FilePath link_from = temp_dir_.GetPath().Append(FPL("from_file"));
FilePath link_to = temp_dir_.GetPath().Append(FPL("to_file"));
CreateTextFile(link_to, bogus_content);
ASSERT_TRUE(CreateSymbolicLink(link_to, link_from))
<< "Failed to create file symlink.";
// Check that NormalizeFilePath sees the link.
FilePath normalized_path;
ASSERT_TRUE(NormalizeFilePath(link_from, &normalized_path));
EXPECT_NE(link_from, link_to);
EXPECT_EQ(link_to.BaseName().value(), normalized_path.BaseName().value());
EXPECT_EQ(link_to.BaseName().value(), normalized_path.BaseName().value());
// Link to a directory.
link_from = temp_dir_.GetPath().Append(FPL("from_dir"));
link_to = temp_dir_.GetPath().Append(FPL("to_dir"));
ASSERT_TRUE(CreateDirectory(link_to));
ASSERT_TRUE(CreateSymbolicLink(link_to, link_from))
<< "Failed to create directory symlink.";
EXPECT_FALSE(NormalizeFilePath(link_from, &normalized_path))
<< "Links to directories should return false.";
// Test that a loop in the links causes NormalizeFilePath() to return false.
link_from = temp_dir_.GetPath().Append(FPL("link_a"));
link_to = temp_dir_.GetPath().Append(FPL("link_b"));
ASSERT_TRUE(CreateSymbolicLink(link_to, link_from))
<< "Failed to create loop symlink a.";
ASSERT_TRUE(CreateSymbolicLink(link_from, link_to))
<< "Failed to create loop symlink b.";
// Infinite loop!
EXPECT_FALSE(NormalizeFilePath(link_from, &normalized_path));
}
#endif // defined(OS_POSIX)
TEST_F(FileUtilTest, DeleteNonExistent) {
FilePath non_existent =
temp_dir_.GetPath().AppendASCII("bogus_file_dne.foobar");
ASSERT_FALSE(PathExists(non_existent));
EXPECT_TRUE(DeleteFile(non_existent, false));
ASSERT_FALSE(PathExists(non_existent));
EXPECT_TRUE(DeleteFile(non_existent, true));
ASSERT_FALSE(PathExists(non_existent));
}
TEST_F(FileUtilTest, DeleteNonExistentWithNonExistentParent) {
FilePath non_existent = temp_dir_.GetPath().AppendASCII("bogus_topdir");
non_existent = non_existent.AppendASCII("bogus_subdir");
ASSERT_FALSE(PathExists(non_existent));
EXPECT_TRUE(DeleteFile(non_existent, false));
ASSERT_FALSE(PathExists(non_existent));
EXPECT_TRUE(DeleteFile(non_existent, true));
ASSERT_FALSE(PathExists(non_existent));
}
TEST_F(FileUtilTest, DeleteFile) {
// Create a file
FilePath file_name = temp_dir_.GetPath().Append(FPL("Test DeleteFile 1.txt"));
CreateTextFile(file_name, bogus_content);
ASSERT_TRUE(PathExists(file_name));
// Make sure it's deleted
EXPECT_TRUE(DeleteFile(file_name, false));
EXPECT_FALSE(PathExists(file_name));
// Test recursive case, create a new file
file_name = temp_dir_.GetPath().Append(FPL("Test DeleteFile 2.txt"));
CreateTextFile(file_name, bogus_content);
ASSERT_TRUE(PathExists(file_name));
// Make sure it's deleted
EXPECT_TRUE(DeleteFile(file_name, true));
EXPECT_FALSE(PathExists(file_name));
}
#if defined(OS_POSIX)
TEST_F(FileUtilTest, DeleteSymlinkToExistentFile) {
// Create a file.
FilePath file_name = temp_dir_.GetPath().Append(FPL("Test DeleteFile 2.txt"));
CreateTextFile(file_name, bogus_content);
ASSERT_TRUE(PathExists(file_name));
// Create a symlink to the file.
FilePath file_link = temp_dir_.GetPath().Append("file_link_2");
ASSERT_TRUE(CreateSymbolicLink(file_name, file_link))
<< "Failed to create symlink.";
// Delete the symbolic link.
EXPECT_TRUE(DeleteFile(file_link, false));
// Make sure original file is not deleted.
EXPECT_FALSE(PathExists(file_link));
EXPECT_TRUE(PathExists(file_name));
}
TEST_F(FileUtilTest, DeleteSymlinkToNonExistentFile) {
// Create a non-existent file path.
FilePath non_existent =
temp_dir_.GetPath().Append(FPL("Test DeleteFile 3.txt"));
EXPECT_FALSE(PathExists(non_existent));
// Create a symlink to the non-existent file.
FilePath file_link = temp_dir_.GetPath().Append("file_link_3");
ASSERT_TRUE(CreateSymbolicLink(non_existent, file_link))
<< "Failed to create symlink.";
// Make sure the symbolic link is exist.
EXPECT_TRUE(IsLink(file_link));
EXPECT_FALSE(PathExists(file_link));
// Delete the symbolic link.
EXPECT_TRUE(DeleteFile(file_link, false));
// Make sure the symbolic link is deleted.
EXPECT_FALSE(IsLink(file_link));
}
TEST_F(FileUtilTest, ChangeFilePermissionsAndRead) {
// Create a file path.
FilePath file_name =
temp_dir_.GetPath().Append(FPL("Test Readable File.txt"));
EXPECT_FALSE(PathExists(file_name));
const std::string kData("hello");
int buffer_size = kData.length();
char* buffer = new char[buffer_size];
// Write file.
EXPECT_EQ(static_cast<int>(kData.length()),
WriteFile(file_name, kData.data(), kData.length()));
EXPECT_TRUE(PathExists(file_name));
// Make sure the file is readable.
int32_t mode = 0;
EXPECT_TRUE(GetPosixFilePermissions(file_name, &mode));
EXPECT_TRUE(mode & FILE_PERMISSION_READ_BY_USER);
// Get rid of the read permission.
EXPECT_TRUE(SetPosixFilePermissions(file_name, 0u));
EXPECT_TRUE(GetPosixFilePermissions(file_name, &mode));
EXPECT_FALSE(mode & FILE_PERMISSION_READ_BY_USER);
// Make sure the file can't be read.
EXPECT_EQ(-1, ReadFile(file_name, buffer, buffer_size));
// Give the read permission.
EXPECT_TRUE(SetPosixFilePermissions(file_name, FILE_PERMISSION_READ_BY_USER));
EXPECT_TRUE(GetPosixFilePermissions(file_name, &mode));
EXPECT_TRUE(mode & FILE_PERMISSION_READ_BY_USER);
// Make sure the file can be read.
EXPECT_EQ(static_cast<int>(kData.length()),
ReadFile(file_name, buffer, buffer_size));
// Delete the file.
EXPECT_TRUE(DeleteFile(file_name, false));
EXPECT_FALSE(PathExists(file_name));
delete[] buffer;
}
TEST_F(FileUtilTest, ChangeFilePermissionsAndWrite) {
// Create a file path.
FilePath file_name =
temp_dir_.GetPath().Append(FPL("Test Readable File.txt"));
EXPECT_FALSE(PathExists(file_name));
const std::string kData("hello");
// Write file.
EXPECT_EQ(static_cast<int>(kData.length()),
WriteFile(file_name, kData.data(), kData.length()));
EXPECT_TRUE(PathExists(file_name));
// Make sure the file is writable.
int mode = 0;
EXPECT_TRUE(GetPosixFilePermissions(file_name, &mode));
EXPECT_TRUE(mode & FILE_PERMISSION_WRITE_BY_USER);
EXPECT_TRUE(PathIsWritable(file_name));
// Get rid of the write permission.
EXPECT_TRUE(SetPosixFilePermissions(file_name, 0u));
EXPECT_TRUE(GetPosixFilePermissions(file_name, &mode));
EXPECT_FALSE(mode & FILE_PERMISSION_WRITE_BY_USER);
// Make sure the file can't be write.
EXPECT_EQ(-1, WriteFile(file_name, kData.data(), kData.length()));
EXPECT_FALSE(PathIsWritable(file_name));
// Give read permission.
EXPECT_TRUE(SetPosixFilePermissions(file_name,
FILE_PERMISSION_WRITE_BY_USER));
EXPECT_TRUE(GetPosixFilePermissions(file_name, &mode));
EXPECT_TRUE(mode & FILE_PERMISSION_WRITE_BY_USER);
// Make sure the file can be write.
EXPECT_EQ(static_cast<int>(kData.length()),
WriteFile(file_name, kData.data(), kData.length()));
EXPECT_TRUE(PathIsWritable(file_name));
// Delete the file.
EXPECT_TRUE(DeleteFile(file_name, false));
EXPECT_FALSE(PathExists(file_name));
}
TEST_F(FileUtilTest, ChangeDirectoryPermissionsAndEnumerate) {
// Create a directory path.
FilePath subdir_path = temp_dir_.GetPath().Append(FPL("PermissionTest1"));
CreateDirectory(subdir_path);
ASSERT_TRUE(PathExists(subdir_path));
// Create a dummy file to enumerate.
FilePath file_name = subdir_path.Append(FPL("Test Readable File.txt"));
EXPECT_FALSE(PathExists(file_name));
const std::string kData("hello");
EXPECT_EQ(static_cast<int>(kData.length()),
WriteFile(file_name, kData.data(), kData.length()));
EXPECT_TRUE(PathExists(file_name));
// Make sure the directory has the all permissions.
int mode = 0;
EXPECT_TRUE(GetPosixFilePermissions(subdir_path, &mode));
EXPECT_EQ(FILE_PERMISSION_USER_MASK, mode & FILE_PERMISSION_USER_MASK);
// Get rid of the permissions from the directory.
EXPECT_TRUE(SetPosixFilePermissions(subdir_path, 0u));
EXPECT_TRUE(GetPosixFilePermissions(subdir_path, &mode));
EXPECT_FALSE(mode & FILE_PERMISSION_USER_MASK);
// Make sure the file in the directory can't be enumerated.
FileEnumerator f1(subdir_path, true, FileEnumerator::FILES);
EXPECT_TRUE(PathExists(subdir_path));
FindResultCollector c1(&f1);
EXPECT_EQ(0, c1.size());
EXPECT_FALSE(GetPosixFilePermissions(file_name, &mode));
// Give the permissions to the directory.
EXPECT_TRUE(SetPosixFilePermissions(subdir_path, FILE_PERMISSION_USER_MASK));
EXPECT_TRUE(GetPosixFilePermissions(subdir_path, &mode));
EXPECT_EQ(FILE_PERMISSION_USER_MASK, mode & FILE_PERMISSION_USER_MASK);
// Make sure the file in the directory can be enumerated.
FileEnumerator f2(subdir_path, true, FileEnumerator::FILES);
FindResultCollector c2(&f2);
EXPECT_TRUE(c2.HasFile(file_name));
EXPECT_EQ(1, c2.size());
// Delete the file.
EXPECT_TRUE(DeleteFile(subdir_path, true));
EXPECT_FALSE(PathExists(subdir_path));
}
TEST_F(FileUtilTest, ExecutableExistsInPath) {
// Create two directories that we will put in our PATH
const char kPath[] = "PATH";
const FilePath::CharType kDir1[] = FPL("dir1");
const FilePath::CharType kDir2[] = FPL("dir2");
FilePath dir1 = temp_dir_.GetPath().Append(kDir1);
FilePath dir2 = temp_dir_.GetPath().Append(kDir2);
ASSERT_TRUE(CreateDirectory(dir1));
ASSERT_TRUE(CreateDirectory(dir2));
std::unique_ptr<Environment> env(base::Environment::Create());
ASSERT_TRUE(env->SetVar(kPath, dir1.value() + ":" + dir2.value()));
const FilePath::CharType kRegularFileName[] = FPL("regular_file");
const FilePath::CharType kExeFileName[] = FPL("exe");
const FilePath::CharType kDneFileName[] = FPL("does_not_exist");
const FilePath kExePath = dir1.Append(kExeFileName);
const FilePath kRegularFilePath = dir2.Append(kRegularFileName);
// Write file.
const std::string kData("hello");
ASSERT_EQ(static_cast<int>(kData.length()),
WriteFile(kExePath, kData.data(), kData.length()));
ASSERT_TRUE(PathExists(kExePath));
ASSERT_EQ(static_cast<int>(kData.length()),
WriteFile(kRegularFilePath, kData.data(), kData.length()));
ASSERT_TRUE(PathExists(kRegularFilePath));
ASSERT_TRUE(SetPosixFilePermissions(dir1.Append(kExeFileName),
FILE_PERMISSION_EXECUTE_BY_USER));
EXPECT_TRUE(ExecutableExistsInPath(env.get(), kExeFileName));
EXPECT_FALSE(ExecutableExistsInPath(env.get(), kRegularFileName));
EXPECT_FALSE(ExecutableExistsInPath(env.get(), kDneFileName));
}
#endif // defined(OS_POSIX)
#if defined(OS_WIN)
// Tests that the Delete function works for wild cards, especially
// with the recursion flag. Also coincidentally tests PathExists.
// TODO(erikkay): see if anyone's actually using this feature of the API
TEST_F(FileUtilTest, DeleteWildCard) {
// Create a file and a directory
FilePath file_name =
temp_dir_.GetPath().Append(FPL("Test DeleteWildCard.txt"));
CreateTextFile(file_name, bogus_content);
ASSERT_TRUE(PathExists(file_name));
FilePath subdir_path = temp_dir_.GetPath().Append(FPL("DeleteWildCardDir"));
CreateDirectory(subdir_path);
ASSERT_TRUE(PathExists(subdir_path));
// Create the wildcard path
FilePath directory_contents = temp_dir_.GetPath();
directory_contents = directory_contents.Append(FPL("*"));
// Delete non-recursively and check that only the file is deleted
EXPECT_TRUE(DeleteFile(directory_contents, false));
EXPECT_FALSE(PathExists(file_name));
EXPECT_TRUE(PathExists(subdir_path));
// Delete recursively and make sure all contents are deleted
EXPECT_TRUE(DeleteFile(directory_contents, true));
EXPECT_FALSE(PathExists(file_name));
EXPECT_FALSE(PathExists(subdir_path));
}
// TODO(erikkay): see if anyone's actually using this feature of the API
TEST_F(FileUtilTest, DeleteNonExistantWildCard) {
// Create a file and a directory
FilePath subdir_path =
temp_dir_.GetPath().Append(FPL("DeleteNonExistantWildCard"));
CreateDirectory(subdir_path);
ASSERT_TRUE(PathExists(subdir_path));
// Create the wildcard path
FilePath directory_contents = subdir_path;
directory_contents = directory_contents.Append(FPL("*"));
// Delete non-recursively and check nothing got deleted
EXPECT_TRUE(DeleteFile(directory_contents, false));
EXPECT_TRUE(PathExists(subdir_path));
// Delete recursively and check nothing got deleted
EXPECT_TRUE(DeleteFile(directory_contents, true));
EXPECT_TRUE(PathExists(subdir_path));
}
#endif
// Tests non-recursive Delete() for a directory.
TEST_F(FileUtilTest, DeleteDirNonRecursive) {
// Create a subdirectory and put a file and two directories inside.
FilePath test_subdir =
temp_dir_.GetPath().Append(FPL("DeleteDirNonRecursive"));
CreateDirectory(test_subdir);
ASSERT_TRUE(PathExists(test_subdir));
FilePath file_name = test_subdir.Append(FPL("Test DeleteDir.txt"));
CreateTextFile(file_name, bogus_content);
ASSERT_TRUE(PathExists(file_name));
FilePath subdir_path1 = test_subdir.Append(FPL("TestSubDir1"));
CreateDirectory(subdir_path1);
ASSERT_TRUE(PathExists(subdir_path1));
FilePath subdir_path2 = test_subdir.Append(FPL("TestSubDir2"));
CreateDirectory(subdir_path2);
ASSERT_TRUE(PathExists(subdir_path2));
// Delete non-recursively and check that the empty dir got deleted
EXPECT_TRUE(DeleteFile(subdir_path2, false));
EXPECT_FALSE(PathExists(subdir_path2));
// Delete non-recursively and check that nothing got deleted
EXPECT_FALSE(DeleteFile(test_subdir, false));
EXPECT_TRUE(PathExists(test_subdir));
EXPECT_TRUE(PathExists(file_name));
EXPECT_TRUE(PathExists(subdir_path1));
}
// Tests recursive Delete() for a directory.
TEST_F(FileUtilTest, DeleteDirRecursive) {
// Create a subdirectory and put a file and two directories inside.
FilePath test_subdir = temp_dir_.GetPath().Append(FPL("DeleteDirRecursive"));
CreateDirectory(test_subdir);
ASSERT_TRUE(PathExists(test_subdir));
FilePath file_name = test_subdir.Append(FPL("Test DeleteDirRecursive.txt"));
CreateTextFile(file_name, bogus_content);
ASSERT_TRUE(PathExists(file_name));
FilePath subdir_path1 = test_subdir.Append(FPL("TestSubDir1"));
CreateDirectory(subdir_path1);
ASSERT_TRUE(PathExists(subdir_path1));
FilePath subdir_path2 = test_subdir.Append(FPL("TestSubDir2"));
CreateDirectory(subdir_path2);
ASSERT_TRUE(PathExists(subdir_path2));
// Delete recursively and check that the empty dir got deleted
EXPECT_TRUE(DeleteFile(subdir_path2, true));
EXPECT_FALSE(PathExists(subdir_path2));
// Delete recursively and check that everything got deleted
EXPECT_TRUE(DeleteFile(test_subdir, true));
EXPECT_FALSE(PathExists(file_name));
EXPECT_FALSE(PathExists(subdir_path1));
EXPECT_FALSE(PathExists(test_subdir));
}
TEST_F(FileUtilTest, MoveFileNew) {
// Create a file
FilePath file_name_from =