| 4710c53d |
1 | import imp\r |
| 2 | import unittest\r |
| 3 | from test import test_support\r |
| 4 | \r |
| 5 | \r |
| 6 | class LockTests(unittest.TestCase):\r |
| 7 | \r |
| 8 | """Very basic test of import lock functions."""\r |
| 9 | \r |
| 10 | def verify_lock_state(self, expected):\r |
| 11 | self.assertEqual(imp.lock_held(), expected,\r |
| 12 | "expected imp.lock_held() to be %r" % expected)\r |
| 13 | def testLock(self):\r |
| 14 | LOOPS = 50\r |
| 15 | \r |
| 16 | # The import lock may already be held, e.g. if the test suite is run\r |
| 17 | # via "import test.autotest".\r |
| 18 | lock_held_at_start = imp.lock_held()\r |
| 19 | self.verify_lock_state(lock_held_at_start)\r |
| 20 | \r |
| 21 | for i in range(LOOPS):\r |
| 22 | imp.acquire_lock()\r |
| 23 | self.verify_lock_state(True)\r |
| 24 | \r |
| 25 | for i in range(LOOPS):\r |
| 26 | imp.release_lock()\r |
| 27 | \r |
| 28 | # The original state should be restored now.\r |
| 29 | self.verify_lock_state(lock_held_at_start)\r |
| 30 | \r |
| 31 | if not lock_held_at_start:\r |
| 32 | try:\r |
| 33 | imp.release_lock()\r |
| 34 | except RuntimeError:\r |
| 35 | pass\r |
| 36 | else:\r |
| 37 | self.fail("release_lock() without lock should raise "\r |
| 38 | "RuntimeError")\r |
| 39 | \r |
| 40 | class ReloadTests(unittest.TestCase):\r |
| 41 | \r |
| 42 | """Very basic tests to make sure that imp.reload() operates just like\r |
| 43 | reload()."""\r |
| 44 | \r |
| 45 | def test_source(self):\r |
| 46 | # XXX (ncoghlan): It would be nice to use test_support.CleanImport\r |
| 47 | # here, but that breaks because the os module registers some\r |
| 48 | # handlers in copy_reg on import. Since CleanImport doesn't\r |
| 49 | # revert that registration, the module is left in a broken\r |
| 50 | # state after reversion. Reinitialising the module contents\r |
| 51 | # and just reverting os.environ to its previous state is an OK\r |
| 52 | # workaround\r |
| 53 | with test_support.EnvironmentVarGuard():\r |
| 54 | import os\r |
| 55 | imp.reload(os)\r |
| 56 | \r |
| 57 | def test_extension(self):\r |
| 58 | with test_support.CleanImport('time'):\r |
| 59 | import time\r |
| 60 | imp.reload(time)\r |
| 61 | \r |
| 62 | def test_builtin(self):\r |
| 63 | with test_support.CleanImport('marshal'):\r |
| 64 | import marshal\r |
| 65 | imp.reload(marshal)\r |
| 66 | \r |
| 67 | \r |
| 68 | def test_main():\r |
| 69 | tests = [\r |
| 70 | ReloadTests,\r |
| 71 | ]\r |
| 72 | try:\r |
| 73 | import thread\r |
| 74 | except ImportError:\r |
| 75 | pass\r |
| 76 | else:\r |
| 77 | tests.append(LockTests)\r |
| 78 | test_support.run_unittest(*tests)\r |
| 79 | \r |
| 80 | if __name__ == "__main__":\r |
| 81 | test_main()\r |
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