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Merge pull request #462 from cgohlke/patch-3

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TST: fix X/Y Resolution didn't roundtrip in test_file_libtiff
This commit is contained in:
Alex Clark ☺ 2013-12-30 02:57:04 -08:00
commit 9eae73a6d8
2 changed files with 18 additions and 2 deletions
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14
Tests/test_file_libtiff.py
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@ -124,11 +124,21 @@ def test_write_metadata():
for tag, value in reloaded.items(): for tag, value in reloaded.items():
if tag not in ignored: if tag not in ignored:
assert_equal(original[tag], value, "%s didn't roundtrip" % tag) if tag.endswith('Resolution'):
val = original[tag]
assert_almost_equal(val[0][0]/val[0][1], value[0][0]/value[0][1],
msg="%s didn't roundtrip" % tag)
else:
assert_equal(original[tag], value, "%s didn't roundtrip" % tag)
for tag, value in original.items(): for tag, value in original.items():
if tag not in ignored: if tag not in ignored:
assert_equal(value, reloaded[tag], "%s didn't roundtrip" % tag) if tag.endswith('Resolution'):
val = reloaded[tag]
assert_almost_equal(val[0][0]/val[0][1], value[0][0]/value[0][1],
msg="%s didn't roundtrip" % tag)
else:
assert_equal(value, reloaded[tag], "%s didn't roundtrip" % tag)
def test_g3_compression(): def test_g3_compression():

6
Tests/tester.py
View File

@ -67,6 +67,12 @@ def assert_equal(a, b, msg=None):
else: else:
failure(msg or "got %r, expected %r" % (a, b)) failure(msg or "got %r, expected %r" % (a, b))
def assert_almost_equal(a, b, msg=None, eps=1e-6):
if abs(a-b) < eps:
success()
else:
failure(msg or "got %r, expected %r" % (a, b))
def assert_deep_equal(a, b, msg=None): def assert_deep_equal(a, b, msg=None):
try: try:
if len(a) == len(b): if len(a) == len(b):