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bpo-41919: Avoid resource leak in test_io (GH-22973) 

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
This commit is contained in:
Hai Shi 2020-10-26 02:38:33 +08:00 committed by GitHub
parent df8d4c83a6
commit 14cdc215aa
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 13 additions and 12 deletions
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15
Lib/test/test_io.py
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@ -2519,15 +2519,17 @@ class StatefulIncrementalDecoder(codecs.IncrementalDecoder):
codecEnabled = False
@classmethod
def lookupTestDecoder(cls, name):
if cls.codecEnabled and name == 'test_decoder':
# bpo-41919: This method is separated from StatefulIncrementalDecoder to avoid a resource leak
# when registering codecs and cleanup functions.
def lookupTestDecoder(name):
if StatefulIncrementalDecoder.codecEnabled and name == 'test_decoder':
latin1 = codecs.lookup('latin-1')
return codecs.CodecInfo(
name='test_decoder', encode=latin1.encode, decode=None,
incrementalencoder=None,
streamreader=None, streamwriter=None,
incrementaldecoder=cls)
incrementaldecoder=StatefulIncrementalDecoder)
class StatefulIncrementalDecoderTest(unittest.TestCase):
@ -2579,9 +2581,8 @@ class TextIOWrapperTest(unittest.TestCase):
self.testdata = b"AAA\r\nBBB\rCCC\r\nDDD\nEEE\r\n"
self.normalized = b"AAA\nBBB\nCCC\nDDD\nEEE\n".decode("ascii")
os_helper.unlink(os_helper.TESTFN)
codecs.register(StatefulIncrementalDecoder.lookupTestDecoder)
self.addCleanup(codecs.unregister,
StatefulIncrementalDecoder.lookupTestDecoder)
codecs.register(lookupTestDecoder)
self.addCleanup(codecs.unregister, lookupTestDecoder)
def tearDown(self):
os_helper.unlink(os_helper.TESTFN)