1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_TEST_TEST_FILE_UTIL_H_ 6 #define BASE_TEST_TEST_FILE_UTIL_H_ 7 8 // File utility functions used only by tests. 9 10 #include <string> 11 12 #include "base/compiler_specific.h" 13 #include "base/files/file_path.h" 14 15 #if defined(OS_ANDROID) 16 #include <jni.h> 17 #include "base/basictypes.h" 18 #endif 19 20 namespace base { 21 22 class FilePath; 23 24 // Clear a specific file from the system cache like EvictFileFromSystemCache, 25 // but on failure it will sleep and retry. On the Windows buildbots, eviction 26 // can fail if the file is marked in use, and this will throw off timings that 27 // rely on uncached files. 28 bool EvictFileFromSystemCacheWithRetry(const FilePath& file); 29 30 // Wrapper over base::Delete. On Windows repeatedly invokes Delete in case 31 // of failure to workaround Windows file locking semantics. Returns true on 32 // success. 33 bool DieFileDie(const FilePath& file, bool recurse); 34 35 // Clear a specific file from the system cache. After this call, trying 36 // to access this file will result in a cold load from the hard drive. 37 bool EvictFileFromSystemCache(const FilePath& file); 38 39 #if defined(OS_WIN) 40 // Returns true if the volume supports Alternate Data Streams. 41 bool VolumeSupportsADS(const FilePath& path); 42 43 // Returns true if the ZoneIdentifier is correctly set to "Internet" (3). 44 // Note that this function must be called from the same process as 45 // the one that set the zone identifier. I.e. don't use it in UI/automation 46 // based tests. 47 bool HasInternetZoneIdentifier(const FilePath& full_path); 48 #endif // defined(OS_WIN) 49 50 // For testing, make the file unreadable or unwritable. 51 // In POSIX, this does not apply to the root user. 52 bool MakeFileUnreadable(const FilePath& path) WARN_UNUSED_RESULT; 53 bool MakeFileUnwritable(const FilePath& path) WARN_UNUSED_RESULT; 54 55 // Saves the current permissions for a path, and restores it on destruction. 56 class FilePermissionRestorer { 57 public: 58 explicit FilePermissionRestorer(const FilePath& path); 59 ~FilePermissionRestorer(); 60 61 private: 62 const FilePath path_; 63 void* info_; // The opaque stored permission information. 64 size_t length_; // The length of the stored permission information. 65 66 DISALLOW_COPY_AND_ASSIGN(FilePermissionRestorer); 67 }; 68 69 #if defined(OS_ANDROID) 70 // Register the ContentUriTestUrils JNI bindings. 71 bool RegisterContentUriTestUtils(JNIEnv* env); 72 73 // Insert an image file into the MediaStore, and retrieve the content URI for 74 // testing purpose. 75 FilePath InsertImageIntoMediaStore(const FilePath& path); 76 #endif // defined(OS_ANDROID) 77 78 } // namespace base 79 80 #endif // BASE_TEST_TEST_FILE_UTIL_H_ 81