1 files changed, 81 insertions, 0 deletions
diff --git a/lib/python2.7/test/test_imp.py b/lib/python2.7/test/test_imp.py
new file mode 100644
index 0000000..77e44be
--- /dev/null
+++ b/lib/python2.7/test/test_imp.py
@@ -0,0 +1,81 @@
+import imp
+import unittest
+from test import test_support
+
+
+class LockTests(unittest.TestCase):
+
+    """Very basic test of import lock functions."""
+
+    def verify_lock_state(self, expected):
+        self.assertEqual(imp.lock_held(), expected,
+                             "expected imp.lock_held() to be %r" % expected)
+    def testLock(self):
+        LOOPS = 50
+
+        # The import lock may already be held, e.g. if the test suite is run
+        # via "import test.autotest".
+        lock_held_at_start = imp.lock_held()
+        self.verify_lock_state(lock_held_at_start)
+
+        for i in range(LOOPS):
+            imp.acquire_lock()
+            self.verify_lock_state(True)
+
+        for i in range(LOOPS):
+            imp.release_lock()
+
+        # The original state should be restored now.
+        self.verify_lock_state(lock_held_at_start)
+
+        if not lock_held_at_start:
+            try:
+                imp.release_lock()
+            except RuntimeError:
+                pass
+            else:
+                self.fail("release_lock() without lock should raise "
+                            "RuntimeError")
+
+class ReloadTests(unittest.TestCase):
+
+    """Very basic tests to make sure that imp.reload() operates just like
+    reload()."""
+
+    def test_source(self):
+        # XXX (ncoghlan): It would be nice to use test_support.CleanImport
+        # here, but that breaks because the os module registers some
+        # handlers in copy_reg on import. Since CleanImport doesn't
+        # revert that registration, the module is left in a broken
+        # state after reversion. Reinitialising the module contents
+        # and just reverting os.environ to its previous state is an OK
+        # workaround
+        with test_support.EnvironmentVarGuard():
+            import os
+            imp.reload(os)
+
+    def test_extension(self):
+        with test_support.CleanImport('time'):
+            import time
+            imp.reload(time)
+
+    def test_builtin(self):
+        with test_support.CleanImport('marshal'):
+            import marshal
+            imp.reload(marshal)
+
+
+def test_main():
+    tests = [
+        ReloadTests,
+    ]
+    try:
+        import thread
+    except ImportError:
+        pass
+    else:
+        tests.append(LockTests)
+    test_support.run_unittest(*tests)
+
+if __name__ == "__main__":
+    test_main()