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Added warning for deprecated as_dict method

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This commit is contained in:
Andrew Murray 2016-04-03 23:41:28 +10:00
parent a490d8890f
commit 26bf1937c7
2 changed files with 25 additions and 17 deletions
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5
PIL/TiffImagePlugin.py
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@ -448,11 +448,10 @@ class ImageFileDirectory_v2(collections.MutableMapping):
def as_dict(self):
"""Return a dictionary of the image's tags.
use `dict(ifd)` instead.
.. deprecated:: 3.0.0
"""
# FIXME Deprecate: use dict(self)
warnings.warn("as_dict() is deprecated. " +
"Please use dict(ifd) instead.", DeprecationWarning)
return dict(self)
def named(self):

31
Tests/test_file_tiff.py
View File

@ -244,31 +244,40 @@ class TestFileTiff(PillowTestCase):
# Assert
self.assertIsInstance(ret, str)
def test_as_dict(self):
def test_as_dict_deprecation(self):
# Arrange
filename = "Tests/images/pil136.tiff"
im = Image.open(filename)
self.assert_warning(DeprecationWarning, lambda: im.tag_v2.as_dict())
self.assert_warning(DeprecationWarning, lambda: im.tag.as_dict())
def test_dict(self):
# Arrange
filename = "Tests/images/pil136.tiff"
im = Image.open(filename)
# v2 interface
self.assertEqual(
im.tag_v2.as_dict(),
{256: 55, 257: 43, 258: (8, 8, 8, 8), 259: 1,
v2_tags = {256: 55, 257: 43, 258: (8, 8, 8, 8), 259: 1,
262: 2, 296: 2, 273: (8,), 338: (1,), 277: 4,
279: (9460,), 282: 72.0, 283: 72.0, 284: 1})
279: (9460,), 282: 72.0, 283: 72.0, 284: 1}
self.assertEqual(dict(im.tag_v2), v2_tags)
self.assertEqual(im.tag_v2.as_dict(), v2_tags)
# legacy interface
self.assertEqual(
im.tag.as_dict(),
{256: (55,), 257: (43,), 258: (8, 8, 8, 8), 259: (1,),
legacy_tags = {256: (55,), 257: (43,), 258: (8, 8, 8, 8), 259: (1,),
262: (2,), 296: (2,), 273: (8,), 338: (1,), 277: (4,),
279: (9460,), 282: ((720000, 10000),),
283: ((720000, 10000),), 284: (1,)})
283: ((720000, 10000),), 284: (1,)}
self.assertEqual(dict(im.tag), legacy_tags)
self.assertEqual(im.tag.as_dict(), legacy_tags)
def test__delitem__(self):
filename = "Tests/images/pil136.tiff"
im = Image.open(filename)
len_before = len(im.ifd.as_dict())
len_before = len(dict(im.ifd))
del im.ifd[256]
len_after = len(im.ifd.as_dict())
len_after = len(dict(im.ifd))
self.assertEqual(len_before, len_after + 1)
def test_load_byte(self):