class TestModifyExif(unittest.TestCase):
"""Test cases for deleting EXIF attributes."""
def setUp(self):
"""Open sample image file in binary mode for use in test cases."""
grand_canyon = os.path.join(os.path.dirname(__file__), 'grand_canyon.jpg')
with open(grand_canyon, 'rb') as image_file:
self.image = Image(image_file)
assert self.image.has_exif
def test_delete_all_tags(self):
"""Verify deleting all EXIF tags from the Image object."""
self.image.delete_all()
segment_hex = self.image._segments['APP1'].get_segment_hex()
self.assertEqual('\n'.join(textwrap.wrap(segment_hex, 90)), DELETE_ALL_HEX_BASELINE)
with TemporaryFile("w+b") as temporary_file_stream:
temporary_file_stream.write(self.image.get_file())
temporary_file_stream.seek(0)
reloaded_image = Image(temporary_file_stream)
dunder_dir_text = '\n'.join(textwrap.wrap(repr(sorted(dir(reloaded_image))), 90))
self.assertEqual(dunder_dir_text, Baseline("""
['<unknown EXIF tag 59932>', '_segments', 'delete', 'delete_all', 'get', 'get_file',
'get_thumbnail', 'has_exif', 'resolution_unit', 'x_resolution', 'y_resolution']
"""))
def test_delete_ascii_tags(self):
"""Verify deleting EXIF ASCII from the Image object and the hexadecimal equivalent."""
del self.image.make
del self.image.model
with self.assertRaisesRegex(AttributeError, "image does not have attribute make"):
self.image.make
with self.assertRaisesRegex(AttributeError, "image does not have attribute model"):
self.image.model
segment_hex = self.image._segments['APP1'].get_segment_hex()
self.assertEqual('\n'.join(textwrap.wrap(segment_hex, 90)), DELETE_ASCII_TAGS_HEX_BASELINE)
def test_delete_gps_tags(self):
"""Verify deleting EXIF geotags from the Image object and the hexadecimal equivalent."""
del self.image.gps_latitude
del self.image.gps_longitude
del self.image.gps_altitude
with self.assertRaisesRegex(AttributeError, "image does not have attribute gps_latitude"):
self.image.gps_latitude
with self.assertRaisesRegex(AttributeError, "image does not have attribute gps_longitude"):
self.image.gps_longitude
with self.assertRaisesRegex(AttributeError, "image does not have attribute gps_altitude"):
self.image.gps_altitude
segment_hex = self.image._segments['APP1'].get_segment_hex()
self.assertEqual('\n'.join(textwrap.wrap(segment_hex, 90)), DELETE_GEOTAG_HEX_BASELINE)
def test_delete_method(self):
"""Test behavior when setting tags using the ``delete()`` method."""
self.image.delete("model")
with self.assertRaisesRegex(AttributeError, "image does not have attribute model"):
self.image.model
def test_handle_unset_attribute(self):
"""Verify that accessing an attribute not present in an image raises an AttributeError."""
with self.assertRaisesRegex(AttributeError, "image does not have attribute light_source"):
del self.image.light_source
def test_index_deleter(self):
"""Test deleting attributes using index syntax."""
del self.image["model"]
with self.assertRaisesRegex(AttributeError, "image does not have attribute model"):
self.image.model
def test_standard_delete(self):
"""Verify that writing and deleting non-EXIF attributes behave normally."""
self.image.dummy_attr = 123
assert self.image.dummy_attr == 123
del self.image.dummy_attr
with self.assertRaisesRegex(AttributeError, "unknown image attribute dummy_attr"):
self.image.dummy_attr
class TestModifyExif(unittest.TestCase):
"""Test cases for deleting EXIF attributes."""
def setUp(self):
"""Open sample image file in binary mode for use in test cases."""
grand_canyon = os.path.join(os.path.dirname(__file__),
'grand_canyon.jpg')
with open(grand_canyon, 'rb') as image_file:
self.image = Image(image_file)
assert self.image.has_exif
def test_delete_ascii_tags(self):
"""Verify deleting EXIF ASCII from the Image object and the hexadecimal equivalent."""
del self.image.make
del self.image.model
with self.assertRaisesRegex(AttributeError,
"image does not have attribute make"):
self.image.make
with self.assertRaisesRegex(AttributeError,
"image does not have attribute model"):
self.image.model
segment_hex = self.image._segments['APP1'].get_segment_hex()
self.assertEqual('\n'.join(textwrap.wrap(segment_hex, 90)),
DELETE_ASCII_TAGS_HEX_BASELINE)
def test_delete_gps_tags(self):
"""Verify deleting EXIF geotags from the Image object and the hexadecimal equivalent."""
del self.image.gps_latitude
del self.image.gps_longitude
del self.image.gps_altitude
with self.assertRaisesRegex(
AttributeError, "image does not have attribute gps_latitude"):
self.image.gps_latitude
with self.assertRaisesRegex(
AttributeError, "image does not have attribute gps_longitude"):
self.image.gps_longitude
with self.assertRaisesRegex(
AttributeError, "image does not have attribute gps_altitude"):
self.image.gps_altitude
segment_hex = self.image._segments['APP1'].get_segment_hex()
self.assertEqual('\n'.join(textwrap.wrap(segment_hex, 90)),
DELETE_GEOTAG_HEX_BASELINE)
def test_delete_method(self):
"""Test behavior when setting tags using the ``delete()`` method."""
self.image.delete("model")
with self.assertRaisesRegex(AttributeError,
"image does not have attribute model"):
self.image.model
def test_handle_unset_attribute(self):
"""Verify that accessing an attribute not present in an image raises an AttributeError."""
with self.assertRaisesRegex(
AttributeError, "image does not have attribute light_source"):
del self.image.light_source
def test_index_deleter(self):
"""Test deleting attributes using index syntax."""
del self.image["model"]
with self.assertRaisesRegex(AttributeError,
"image does not have attribute model"):
self.image.model
def test_standard_delete(self):
"""Verify that writing and deleting non-EXIF attributes behave normally."""
self.image.dummy_attr = 123
assert self.image.dummy_attr == 123
del self.image.dummy_attr
with self.assertRaisesRegex(AttributeError,
"unknown image attribute dummy_attr"):
self.image.dummy_attr
