import unittest
import _thread


class TestLockAfterTimeout(unittest.TestCase):

    def create_dodgy_lock(self):
        l = _thread.allocate_lock()
        self.assertTrue(l.acquire())
        self.assertFalse(l.acquire(timeout=0.01))       # times out
        l.release()
        return l                                        # should be unlocked

    def test_locked(self):
        l = self.create_dodgy_lock()
        self.assertFalse(l.locked())                    # fails on Py3.2 win32

    def test_nonblocking_acquire(self):
        l = self.create_dodgy_lock()
        self.assertTrue(l.acquire(blocking=False))      # fails on Py3.2 win32

    def test_releasing_unowned_lock(self):
        l = self.create_dodgy_lock()
        self.assertRaises(_thread.error, l.release)     # fails on Py3.2 win32


if __name__ == '__main__':
    unittest.main()