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67 lines
1.9 KiB
Python
67 lines
1.9 KiB
Python
"""
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Create and delete FILES_PER_THREAD temp files (via tempfile.TemporaryFile)
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in each of NUM_THREADS threads, recording the number of successes and
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failures. A failure is a bug in tempfile, and may be due to:
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+ Trying to create more than one tempfile with the same name.
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+ Trying to delete a tempfile that doesn't still exist.
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+ Something we've never seen before.
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By default, NUM_THREADS == 20 and FILES_PER_THREAD == 50. This is enough to
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create about 150 failures per run under Win98SE in 2.0, and runs pretty
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quickly. Guido reports needing to boost FILES_PER_THREAD to 500 before
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provoking a 2.0 failure under Linux.
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"""
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import tempfile
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from test.support import threading_helper
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import unittest
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import io
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import threading
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from traceback import print_exc
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threading_helper.requires_working_threading(module=True)
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NUM_THREADS = 20
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FILES_PER_THREAD = 50
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startEvent = threading.Event()
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class TempFileGreedy(threading.Thread):
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error_count = 0
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ok_count = 0
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def run(self):
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self.errors = io.StringIO()
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startEvent.wait()
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for i in range(FILES_PER_THREAD):
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try:
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f = tempfile.TemporaryFile("w+b")
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f.close()
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except:
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self.error_count += 1
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print_exc(file=self.errors)
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else:
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self.ok_count += 1
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class ThreadedTempFileTest(unittest.TestCase):
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def test_main(self):
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threads = [TempFileGreedy() for i in range(NUM_THREADS)]
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with threading_helper.start_threads(threads, startEvent.set):
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pass
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ok = sum(t.ok_count for t in threads)
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errors = [str(t.name) + str(t.errors.getvalue())
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for t in threads if t.error_count]
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msg = "Errors: errors %d ok %d\n%s" % (len(errors), ok,
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'\n'.join(errors))
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self.assertEqual(errors, [], msg)
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self.assertEqual(ok, NUM_THREADS * FILES_PER_THREAD)
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if __name__ == "__main__":
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unittest.main()
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