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Fix #10257. Clear resource warnings by using os.popen's context manager.

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This commit is contained in:
Brian Curtin 2010-10-30 21:24:21 +00:00
parent 1d7878a696
commit 810921b675
1 changed files with 10 additions and 8 deletions
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18
Lib/test/test_os.py
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@ -406,17 +406,19 @@ class EnvironTests(mapping_tests.BasicTestMappingProtocol):
os.environ.clear()
if os.path.exists("/bin/sh"):
os.environ.update(HELLO="World")
value = os.popen("/bin/sh -c 'echo $HELLO'").read().strip()
self.assertEquals(value, "World")
with os.popen("/bin/sh -c 'echo $HELLO'") as popen:
value = popen.read().strip()
self.assertEquals(value, "World")
def test_os_popen_iter(self):
if os.path.exists("/bin/sh"):
popen = os.popen("/bin/sh -c 'echo \"line1\nline2\nline3\"'")
it = iter(popen)
self.assertEquals(next(it), "line1\n")
self.assertEquals(next(it), "line2\n")
self.assertEquals(next(it), "line3\n")
self.assertRaises(StopIteration, next, it)
with os.popen(
"/bin/sh -c 'echo \"line1\nline2\nline3\"'") as popen:
it = iter(popen)
self.assertEquals(next(it), "line1\n")
self.assertEquals(next(it), "line2\n")
self.assertEquals(next(it), "line3\n")
self.assertRaises(StopIteration, next, it)
# Verify environ keys and values from the OS are of the
# correct str type.