def test_with_no_change(self):
watcher = win32_file_watcher.Win32FileWatcher('/tmp')
ctypes.windll.kernel32.CreateFileW(
mox_c('/tmp'), mox_c(1), mox_c(3), None, mox_c(3),
mox_c(win32_file_watcher._FILE_FLAG_BACKUP_SEMANTICS),
None).AndReturn(31415)
# pylint: disable=unused-argument
def found_nothing(handle, buff, size, recursive, change_type,
size_returned_by_ref, unused1, unused2):
ctypes.cast(size_returned_by_ref,
ctypes.POINTER(ctypes.c_ulong))[0] = 0
ctypes.windll.kernel32.ReadDirectoryChangesW(
31415, mox.IgnoreArg(), mox_c(4096), True, mox_c(351),
mox.IgnoreArg(), None,
None).WithSideEffects(found_nothing).AndReturn(-1)
ctypes.windll.kernel32.CancelIoEx(31415, None)
ctypes.windll.kernel32.CloseHandle(31415)
self.mox.ReplayAll()
watcher.start()
watcher.quit()
self.assertEqual(watcher.changes(), set())
self.mox.VerifyAll()
def get_file_watcher(directories, use_mtime_file_watcher):
"""Returns an instance that monitors a hierarchy of directories.
Args:
directories: A list representing the paths of the directories to monitor.
use_mtime_file_watcher: A bool containing whether to use mtime polling to
monitor file changes even if other options are available on the current
platform.
Returns:
A FileWatcher appropriate for the current platform. start() must be called
before has_changes().
"""
assert not isinstance(directories,
types.StringTypes), 'expected list got str'
if len(directories) != 1:
return _MultipleFileWatcher(directories, use_mtime_file_watcher)
directory = directories[0]
if use_mtime_file_watcher:
return mtime_file_watcher.MtimeFileWatcher(directory)
elif sys.platform.startswith('linux'):
return inotify_file_watcher.InotifyFileWatcher(directory)
elif sys.platform.startswith('win'):
return win32_file_watcher.Win32FileWatcher(directory)
return mtime_file_watcher.MtimeFileWatcher(directory)
def test_changes_wait_failed(self):
watcher = win32_file_watcher.Win32FileWatcher('/tmp')
watcher._find_change_handle = 5
ctypes.windll.kernel32.WaitForSingleObject(5, 0).AndReturn(
win32_file_watcher.WAIT_FAILED)
self.mox.ReplayAll()
self.assertRaises(WinError, watcher.changes)
self.mox.VerifyAll()
def test_changes_no_changes(self):
watcher = win32_file_watcher.Win32FileWatcher('/tmp')
watcher._find_change_handle = 5
ctypes.windll.kernel32.WaitForSingleObject(5, 0).AndReturn(
win32_file_watcher.WAIT_TIMEOUT)
self.mox.ReplayAll()
self.assertFalse(watcher.changes())
self.mox.VerifyAll()
def test_with_error(self):
watcher = win32_file_watcher.Win32FileWatcher('/tmp')
ctypes.windll.kernel32.CreateFileW(
mox_c('/tmp'), mox_c(1), mox_c(3), None, mox_c(3),
mox_c(win32_file_watcher._FILE_FLAG_BACKUP_SEMANTICS),
None).AndReturn(win32_file_watcher._INVALID_HANDLE_VALUE)
self.mox.ReplayAll()
self.assertRaises(WinError, watcher.start)
self.mox.VerifyAll()
def test_start_find_next_change_notification_failed(self):
watcher = win32_file_watcher.Win32FileWatcher('/tmp')
ctypes.windll.kernel32.FindFirstChangeNotificationA(
os.path.abspath('/tmp'), True,
win32_file_watcher._INTERESTING_NOTIFICATIONS).AndReturn(5)
ctypes.windll.kernel32.FindNextChangeNotification(5).AndReturn(False)
self.mox.ReplayAll()
self.assertRaises(WinError, watcher.start)
self.mox.VerifyAll()
def test_start_successful(self):
watcher = win32_file_watcher.Win32FileWatcher('/tmp')
ctypes.windll.kernel32.FindFirstChangeNotificationA(
os.path.abspath('/tmp'), True,
win32_file_watcher._INTERESTING_NOTIFICATIONS).AndReturn(5)
ctypes.windll.kernel32.FindNextChangeNotification(5).AndReturn(True)
self.mox.ReplayAll()
watcher.start()
self.mox.VerifyAll()
def test_changes_find_next_change_notification_failed(self):
watcher = win32_file_watcher.Win32FileWatcher('/tmp')
watcher._find_change_handle = 5
ctypes.windll.kernel32.WaitForSingleObject(5, 0).AndReturn(
win32_file_watcher.WAIT_OBJECT_0)
ctypes.windll.kernel32.FindNextChangeNotification(5).AndReturn(False)
self.mox.ReplayAll()
self.assertRaises(WinError, watcher.changes)
self.mox.VerifyAll()
def test_changes_with_changes(self):
watcher = win32_file_watcher.Win32FileWatcher('/tmp')
watcher._find_change_handle = 5
ctypes.windll.kernel32.WaitForSingleObject(5, 0).AndReturn(
win32_file_watcher.WAIT_OBJECT_0)
ctypes.windll.kernel32.FindNextChangeNotification(5).AndReturn(True)
ctypes.windll.kernel32.WaitForSingleObject(5, 0).AndReturn(
win32_file_watcher.WAIT_TIMEOUT)
self.mox.ReplayAll()
self.assertTrue(watcher.changes())
self.mox.VerifyAll()
def test_with_change(self):
watcher = win32_file_watcher.Win32FileWatcher('/tmp')
ctypes.windll.kernel32.CreateFileW(
mox_c('/tmp'), mox_c(1), mox_c(3), None, mox_c(3),
mox_c(win32_file_watcher._FILE_FLAG_BACKUP_SEMANTICS),
None).AndReturn(31415)
# pylint: disable=unused-argument
def found_something(handle, buff, size, recursive, change_type,
size_returned_by_ref, unused1, unused2):
parray = [
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00, # next offset = 0
0x10,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00, # Action
0x28,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00, # 4 * 10 chrs
0x74,
0x00,
0x00,
0x00, # 't'
0x65,
0x00,
0x00,
0x00, # 'e'
0x73,
0x00,
0x00,
0x00, # 's'
0x74,
0x00,
0x00,
0x00, # 't'
0x20,
0x00,
0x00,
0x00, # ' '
0x73,
0x00,
0x00,
0x00, # 's'
0x74,
0x00,
0x00,
0x00, # 't'
0x75,
0x00,
0x00,
0x00, # 'u'
0x66,
0x00,
0x00,
0x00, # 'f'
0x66,
0x00,
0x00,
0x00
] # 'f'
nbuff = (ctypes.c_ubyte * len(parray))(*parray)
ctypes.memmove(buff, ctypes.addressof(nbuff), ctypes.sizeof(nbuff))
psize = ctypes.cast(size_returned_by_ref,
ctypes.POINTER(ctypes.c_ulong))
psize[0] = ctypes.sizeof(nbuff)
ctypes.windll.kernel32.ReadDirectoryChangesW(
31415, mox.IgnoreArg(), mox_c(win32_file_watcher._BUFF_SIZE), True,
mox_c(351), mox.IgnoreArg(), None,
None).WithSideEffects(found_something).AndReturn(1)
ctypes.windll.kernel32.CancelIoEx(31415, None)
ctypes.windll.kernel32.CloseHandle(31415)
self.mox.ReplayAll()
watcher.start()
watcher.quit()
self.assertEqual(watcher.changes(), {'test stuff'})
self.mox.VerifyAll()
