def _Open(self, mode='rb'):
"""Opens the file system object defined by path specification.
Args:
mode (Optional[str]): file access mode. The default is 'rb' which
represents read-only binary.
Raises:
AccessError: if the access to open the file was denied.
IOError: if the file system object could not be opened.
PathSpecError: if the path specification is incorrect.
ValueError: if the path specification is invalid.
"""
if not self._path_spec.HasParent():
raise errors.PathSpecError(
'Unsupported path specification without parent.')
file_object = resolver.Resolver.OpenFileObject(
self._path_spec.parent, resolver_context=self._resolver_context)
vsgpt_volume = pyvsgpt.volume()
vsgpt_volume.open_file_object(file_object)
self._file_object = file_object
self._vsgpt_volume = vsgpt_volume
def test_open_file_object(self):
"""Tests the open_file_object function."""
test_source = unittest.source
if not test_source:
raise unittest.SkipTest("missing source")
if not os.path.isfile(test_source):
raise unittest.SkipTest("source not a regular file")
vsgpt_volume = pyvsgpt.volume()
with open(test_source, "rb") as file_object:
vsgpt_volume.open_file_object(file_object)
with self.assertRaises(IOError):
vsgpt_volume.open_file_object(file_object)
vsgpt_volume.close()
with self.assertRaises(TypeError):
vsgpt_volume.open_file_object(None)
with self.assertRaises(ValueError):
vsgpt_volume.open_file_object(file_object, mode="w")
def test_open_close(self):
"""Tests the open and close functions."""
test_source = unittest.source
if not test_source:
return
vsgpt_volume = pyvsgpt.volume()
# Test open and close.
vsgpt_volume.open(test_source)
vsgpt_volume.close()
# Test open and close a second time to validate clean up on close.
vsgpt_volume.open(test_source)
vsgpt_volume.close()
if os.path.isfile(test_source):
with open(test_source, "rb") as file_object:
# Test open_file_object and close.
vsgpt_volume.open_file_object(file_object)
vsgpt_volume.close()
# Test open_file_object and close a second time to validate clean up on close.
vsgpt_volume.open_file_object(file_object)
vsgpt_volume.close()
# Test open_file_object and close and dereferencing file_object.
vsgpt_volume.open_file_object(file_object)
del file_object
vsgpt_volume.close()
def test_close(self):
"""Tests the close function."""
test_source = unittest.source
if not test_source:
raise unittest.SkipTest("missing source")
vsgpt_volume = pyvsgpt.volume()
with self.assertRaises(IOError):
vsgpt_volume.close()
def test_get_number_of_partitions(self):
"""Tests the get_number_of_partitions function and number_of_partitions property."""
test_source = unittest.source
if not test_source:
raise unittest.SkipTest("missing source")
vsgpt_volume = pyvsgpt.volume()
vsgpt_volume.open(test_source)
number_of_partitions = vsgpt_volume.get_number_of_partitions()
self.assertIsNotNone(number_of_partitions)
self.assertIsNotNone(vsgpt_volume.number_of_partitions)
vsgpt_volume.close()
def test_get_bytes_per_sector(self):
"""Tests the get_bytes_per_sector function and bytes_per_sector property."""
test_source = unittest.source
if not test_source:
raise unittest.SkipTest("missing source")
vsgpt_volume = pyvsgpt.volume()
vsgpt_volume.open(test_source)
bytes_per_sector = vsgpt_volume.get_bytes_per_sector()
self.assertIsNotNone(bytes_per_sector)
self.assertIsNotNone(vsgpt_volume.bytes_per_sector)
vsgpt_volume.close()
def test_open(self):
"""Tests the open function."""
test_source = unittest.source
if not test_source:
raise unittest.SkipTest("missing source")
vsgpt_volume = pyvsgpt.volume()
vsgpt_volume.open(test_source)
with self.assertRaises(IOError):
vsgpt_volume.open(test_source)
vsgpt_volume.close()
with self.assertRaises(TypeError):
vsgpt_volume.open(None)
with self.assertRaises(ValueError):
vsgpt_volume.open(test_source, mode="w")
def test_signal_abort(self):
"""Tests the signal_abort function."""
vsgpt_volume = pyvsgpt.volume()
vsgpt_volume.signal_abort()