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""" def __init__(self): self.hashCalled = False def __hash__(self): self.hashCalled = True raise RuntimeError('not a TypeError!') # Set in test_hashException unhashableObject = None class RebuildTests(unittest.TestCase): """ Simple testcase for rebuilding, to at least exercise the code. """ def setUp(self): self.libPath = self.mktemp() os.mkdir(self.libPath) self.fakelibPath = os.path.join(self.libPath, 'twisted_rebuild_fakelib') os.mkdir(self.fakelibPath) open(os.path.join(self.fakelibPath, '__init__.py'), 'w').close() sys.path.insert(0, self.libPath) def tearDown(self): sys.path.remove(self.libPath) def test_FileRebuild(self): from twisted.python.util import sibpath import shutil, time shutil.copyfile(sibpath(__file__, "myrebuilder1.py"), os.path.join(self.fakelibPath, "myrebuilder.py")) from twisted_rebuild_fakelib import myrebuilder a = myrebuilder.A() b = myrebuilder.B() i = myrebuilder.Inherit() self.assertEqual(a.a(), 'a') # Necessary because the file has not "changed" if a second has not gone # by in unix. This sucks, but it's not often that you'll be doing more # than one reload per second. time.sleep(1.1) shutil.copyfile(sibpath(__file__, "myrebuilder2.py"), os.path.join(self.fakelibPath, "myrebuilder.py")) rebuild.rebuild(myrebuilder) b2 = myrebuilder.B() self.assertEqual(b2.b(), 'c') self.assertEqual(b.b(), 'c') self.assertEqual(i.a(), 'd') self.assertEqual(a.a(), 'b') def test_Rebuild(self): """ Rebuilding an unchanged module. """ # This test would actually pass if rebuild was a no-op, but it # ensures rebuild doesn't break stuff while being a less # complex test than testFileRebuild. x = crash_test_dummy.X('a') rebuild.rebuild(crash_test_dummy, doLog=False) # Instance rebuilding is triggered by attribute access. x.do() self.assertEqual(x.__class__, crash_test_dummy.X) self.assertEqual(f, crash_test_dummy.foo) def test_ComponentInteraction(self): x = crash_test_dummy.XComponent() x.setAdapter(crash_test_dummy.IX, crash_test_dummy.XA) x.getComponent(crash_test_dummy.IX) rebuild.rebuild(crash_test_dummy, 0) newComponent = x.getComponent(crash_test_dummy.IX) newComponent.method() self.assertEqual(newComponent.__class__, crash_test_dummy.XA) # Test that a duplicate registerAdapter is not allowed from twisted.python import components self.assertRaises(ValueError, components.registerAdapter, crash_test_dummy.XA, crash_test_dummy.X, crash_test_dummy.IX) def test_UpdateInstance(self): global Foo, Buz b = Buz() class Foo: def foo(self): """ Dummy method """ class Buz(Bar, Baz): x = 10 rebuild.updateInstance(b) assert hasattr(b, 'foo'), "Missing method on rebuilt instance" assert hasattr(b, 'x'), "Missing class attribute on rebuilt instance" def test_BananaInteraction(self): from twisted.python import rebuild from twisted.spread import banana rebuild.latestClass(banana.Banana) def test_hashException(self): """ Rebuilding something that has a __hash__ that raises a non-TypeError shouldn't cause rebuild to die. """ global unhashableObject unhashableObject = HashRaisesRuntimeError() def _cleanup(): global unhashableObject unhashableObject = None self.addCleanup(_cleanup) rebuild.rebuild(rebuild) self.assertTrue(unhashableObject.hashCalled) def test_Sensitive(self): """ L{twisted.python.rebuild.Sensitive} """ from twisted.python import rebuild from twisted.python.rebuild import Sensitive class TestSensitive(Sensitive): def test_method(self): """ Dummy method """ testSensitive = TestSensitive() testSensitive.rebuildUpToDate() self.assertFalse(testSensitive.needRebuildUpdate()) # Test rebuilding a builtin class newException = rebuild.latestClass(Exception) if _PY3: self.assertEqual(repr(Exception), repr(newException)) else: self.assertIn('twisted.python.rebuild.Exception', repr(newException)) self.assertEqual(newException, testSensitive.latestVersionOf(newException)) # Test types.MethodType on method in class self.assertEqual(TestSensitive.test_method, testSensitive.latestVersionOf(TestSensitive.test_method)) # Test types.MethodType on method in instance of class self.assertEqual(testSensitive.test_method, testSensitive.latestVersionOf(testSensitive.test_method)) # Test a class self.assertEqual(TestSensitive, testSensitive.latestVersionOf(TestSensitive)) class Foo: """ Dummy class """ foo = Foo() # Test types.InstanceType self.assertEqual(foo, testSensitive.latestVersionOf(foo)) def myFunction(): """ Dummy method """ # Test types.FunctionType self.assertEqual(myFunction, testSensitive.latestVersionOf(myFunction)) class NewStyleTests(unittest.TestCase): """ Tests for rebuilding new-style classes of various sorts. """ def setUp(self): self.m = types.ModuleType('whipping') sys.modules['whipping'] = self.m def tearDown(self): del sys.modules['whipping'] del self.m def test_slots(self): """ Try to rebuild a new style class with slots defined. """ classDefinition = ( "class SlottedClass(object):\n" " __slots__ = ['a']\n") exec(classDefinition, self.m.__dict__) inst = self.m.SlottedClass() inst.a = 7 exec(classDefinition, self.m.__dict__) rebuild.updateInstance(inst) self.assertEqual(inst.a, 7) self.assertIs(type(inst), self.m.SlottedClass) def test_typeSubclass(self): """ Try to rebuild a base type subclass. """ classDefinition = ( "class ListSubclass(list):\n" " pass\n") exec(classDefinition, self.m.__dict__) inst = self.m.ListSubclass() inst.append(2) exec(classDefinition, self.m.__dict__) rebuild.updateInstance(inst) self.assertEqual(inst[0], 2) self.assertIs(type(inst), self.m.ListSubclass) def test_instanceSlots(self): """ Test that when rebuilding an instance with a __slots__ attribute, it fails accurately instead of giving a L{rebuild.RebuildError}. """ classDefinition = ( "class NotSlottedClass(object):\n" " pass\n") exec(classDefinition, self.m.__dict__) inst = self.m.NotSlottedClass() inst.__slots__ = ['a'] classDefinition = ( "class NotSlottedClass:\n" " pass\n") exec(classDefinition, self.m.__dict__) # Moving from new-style class to old-style should fail. self.assertRaises(TypeError, rebuild.updateInstance, inst) if getattr(types, 'ClassType', None) is None: test_instanceSlots.skip = "Old-style classes not supported on Python 3"