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Rewrote the test for a file truncated by 5000 bytes. #180

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This commit is contained in:
John Evans 2014-03-10 20:44:24 -04:00
commit 3e490d0c28
1 changed files with 20 additions and 18 deletions
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38
glymur/test/test_conformance.py
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@ -62,6 +62,26 @@ class TestSuiteConformance(unittest.TestCase):
with self.assertRaises(OSError):
j2k.read(rlevel=-1)
def test_truncated_5000(self):
"""File is missing last 5000 bytes."""
with open(self.j2kfile, 'rb') as ifile:
data = ifile.read()
with tempfile.NamedTemporaryFile(suffix='.j2k') as ofile:
ofile.write(data[:-5000])
ofile.flush()
j2k = Jp2k(ofile.name)
with self.assertWarns(UserWarning):
codestream = j2k.get_codestream(header_only=False)
# The last segment is truncated, so there should not be an EOC
# marker.
self.assertNotEqual(codestream.segment[-1].marker_id, 'EOC')
# The codestream is not as long as claimed.
with self.assertRaises(OSError):
j2k.read(rlevel=-1)
@unittest.skipIf(FORMAT_CORPUS_DATA_ROOT is None,
"FORMAT_CORPUS_DATA_ROOT environment variable not set")
@ -70,24 +90,6 @@ class TestSuiteConformance(unittest.TestCase):
class TestSuiteFormatCorpus(unittest.TestCase):
"""Test suite for files in format corpus repository."""
@unittest.skipIf(re.match(r"""1\.[01234]""",
glymur.version.openjpeg_version) is not None,
"Needs 1.4+ to catch this.")
def test_balloon_trunc2(self):
"""Shortened by 5000 bytes."""
jfile = os.path.join(FORMAT_CORPUS_DATA_ROOT,
'jp2k-test/byteCorruption/balloon_trunc2.jp2')
j2k = Jp2k(jfile)
with self.assertWarns(UserWarning):
codestream = j2k.get_codestream(header_only=False)
# The last segment is truncated, so there should not be an EOC marker.
self.assertNotEqual(codestream.segment[-1].marker_id, 'EOC')
# The codestream is not as long as claimed.
with self.assertRaises(OSError):
j2k.read(rlevel=-1)
def test_balloon_trunc3(self):
"""Most of last tile is missing."""
jfile = os.path.join(FORMAT_CORPUS_DATA_ROOT,