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Issue #3860: GzipFile and BZ2File now support the context manager protocol.

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This commit is contained in:
Antoine Pitrou 2009-01-10 16:13:45 +00:00
parent 7c303e9a98
commit b74fc2b5fe
4 changed files with 83 additions and 1 deletions
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22
Lib/test/test_gzip.py
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@ -166,7 +166,6 @@ class TestGzip(unittest.TestCase):
fWrite = gzip.GzipFile(self.filename, 'w', mtime = mtime)
fWrite.write(data1)
fWrite.close()
fRead = gzip.GzipFile(self.filename)
dataRead = fRead.read()
self.assertEqual(dataRead, data1)
@ -222,6 +221,27 @@ class TestGzip(unittest.TestCase):
fRead.close()
def test_with_open(self):
# GzipFile supports the context management protocol
with gzip.GzipFile(self.filename, "wb") as f:
f.write(b"xxx")
f = gzip.GzipFile(self.filename, "rb")
f.close()
try:
with f:
pass
except ValueError:
pass
else:
self.fail("__enter__ on a closed file didn't raise an exception")
try:
with gzip.GzipFile(self.filename, "wb") as f:
1/0
except ZeroDivisionError:
pass
else:
self.fail("1/0 didn't raise an exception")
def test_main(verbose=None):
test_support.run_unittest(TestGzip)