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43 lines
1.1 KiB
Python
43 lines
1.1 KiB
Python
import imp
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from test.test_support import TestFailed, TestSkipped
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try:
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import thread
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except ImportError:
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raise TestSkipped("test only valid when thread support is available")
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def verify_lock_state(expected):
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if imp.lock_held() != expected:
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raise TestFailed("expected imp.lock_held() to be %r" % expected)
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def testLock():
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LOOPS = 50
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# The import lock may already be held, e.g. if the test suite is run
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# via "import test.autotest".
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lock_held_at_start = imp.lock_held()
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verify_lock_state(lock_held_at_start)
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for i in range(LOOPS):
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imp.acquire_lock()
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verify_lock_state(True)
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for i in range(LOOPS):
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imp.release_lock()
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# The original state should be restored now.
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verify_lock_state(lock_held_at_start)
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if not lock_held_at_start:
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try:
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imp.release_lock()
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except RuntimeError:
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pass
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else:
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raise TestFailed("release_lock() without lock should raise "
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"RuntimeError")
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def test_main():
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testLock()
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if __name__ == "__main__":
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test_main()
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