--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_abc.py Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,211 @@
+# Copyright 2007 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Unit tests for abc.py."""
+
+import unittest
+from test import test_support
+
+import abc
+from inspect import isabstract
+
+
+class TestABC(unittest.TestCase):
+
+ def test_abstractmethod_basics(self):
+ @abc.abstractmethod
+ def foo(self): pass
+ self.assertEqual(foo.__isabstractmethod__, True)
+ def bar(self): pass
+ self.assertEqual(hasattr(bar, "__isabstractmethod__"), False)
+
+ def test_abstractproperty_basics(self):
+ @abc.abstractproperty
+ def foo(self): pass
+ self.assertEqual(foo.__isabstractmethod__, True)
+ def bar(self): pass
+ self.assertEqual(hasattr(bar, "__isabstractmethod__"), False)
+
+ class C:
+ __metaclass__ = abc.ABCMeta
+ @abc.abstractproperty
+ def foo(self): return 3
+ class D(C):
+ @property
+ def foo(self): return super(D, self).foo
+ self.assertEqual(D().foo, 3)
+
+ def test_abstractmethod_integration(self):
+ for abstractthing in [abc.abstractmethod, abc.abstractproperty]:
+ class C:
+ __metaclass__ = abc.ABCMeta
+ @abstractthing
+ def foo(self): pass # abstract
+ def bar(self): pass # concrete
+ self.assertEqual(C.__abstractmethods__, set(["foo"]))
+ self.assertRaises(TypeError, C) # because foo is abstract
+ self.assert_(isabstract(C))
+ class D(C):
+ def bar(self): pass # concrete override of concrete
+ self.assertEqual(D.__abstractmethods__, set(["foo"]))
+ self.assertRaises(TypeError, D) # because foo is still abstract
+ self.assert_(isabstract(D))
+ class E(D):
+ def foo(self): pass
+ self.assertEqual(E.__abstractmethods__, set())
+ E() # now foo is concrete, too
+ self.failIf(isabstract(E))
+ class F(E):
+ @abstractthing
+ def bar(self): pass # abstract override of concrete
+ self.assertEqual(F.__abstractmethods__, set(["bar"]))
+ self.assertRaises(TypeError, F) # because bar is abstract now
+ self.assert_(isabstract(F))
+
+ def test_subclass_oldstyle_class(self):
+ class A:
+ __metaclass__ = abc.ABCMeta
+ class OldstyleClass:
+ pass
+ self.assertFalse(issubclass(OldstyleClass, A))
+ self.assertFalse(issubclass(A, OldstyleClass))
+
+ def test_isinstance_class(self):
+ class A:
+ __metaclass__ = abc.ABCMeta
+ class OldstyleClass:
+ pass
+ self.assertFalse(isinstance(OldstyleClass, A))
+ self.assertTrue(isinstance(OldstyleClass, type(OldstyleClass)))
+ self.assertFalse(isinstance(A, OldstyleClass))
+ # This raises a recursion depth error, but is low-priority:
+ # self.assertTrue(isinstance(A, abc.ABCMeta))
+
+ def test_registration_basics(self):
+ class A:
+ __metaclass__ = abc.ABCMeta
+ class B(object):
+ pass
+ b = B()
+ self.assertEqual(issubclass(B, A), False)
+ self.assertEqual(issubclass(B, (A,)), False)
+ self.assertEqual(isinstance(b, A), False)
+ self.assertEqual(isinstance(b, (A,)), False)
+ A.register(B)
+ self.assertEqual(issubclass(B, A), True)
+ self.assertEqual(issubclass(B, (A,)), True)
+ self.assertEqual(isinstance(b, A), True)
+ self.assertEqual(isinstance(b, (A,)), True)
+ class C(B):
+ pass
+ c = C()
+ self.assertEqual(issubclass(C, A), True)
+ self.assertEqual(issubclass(C, (A,)), True)
+ self.assertEqual(isinstance(c, A), True)
+ self.assertEqual(isinstance(c, (A,)), True)
+
+ def test_isinstance_invalidation(self):
+ class A:
+ __metaclass__ = abc.ABCMeta
+ class B(object):
+ pass
+ b = B()
+ self.assertEqual(isinstance(b, A), False)
+ self.assertEqual(isinstance(b, (A,)), False)
+ A.register(B)
+ self.assertEqual(isinstance(b, A), True)
+ self.assertEqual(isinstance(b, (A,)), True)
+
+ def test_registration_builtins(self):
+ class A:
+ __metaclass__ = abc.ABCMeta
+ A.register(int)
+ self.assertEqual(isinstance(42, A), True)
+ self.assertEqual(isinstance(42, (A,)), True)
+ self.assertEqual(issubclass(int, A), True)
+ self.assertEqual(issubclass(int, (A,)), True)
+ class B(A):
+ pass
+ B.register(basestring)
+ self.assertEqual(isinstance("", A), True)
+ self.assertEqual(isinstance("", (A,)), True)
+ self.assertEqual(issubclass(str, A), True)
+ self.assertEqual(issubclass(str, (A,)), True)
+
+ def test_registration_edge_cases(self):
+ class A:
+ __metaclass__ = abc.ABCMeta
+ A.register(A) # should pass silently
+ class A1(A):
+ pass
+ self.assertRaises(RuntimeError, A1.register, A) # cycles not allowed
+ class B(object):
+ pass
+ A1.register(B) # ok
+ A1.register(B) # should pass silently
+ class C(A):
+ pass
+ A.register(C) # should pass silently
+ self.assertRaises(RuntimeError, C.register, A) # cycles not allowed
+ C.register(B) # ok
+
+ def test_registration_transitiveness(self):
+ class A:
+ __metaclass__ = abc.ABCMeta
+ self.failUnless(issubclass(A, A))
+ self.failUnless(issubclass(A, (A,)))
+ class B:
+ __metaclass__ = abc.ABCMeta
+ self.failIf(issubclass(A, B))
+ self.failIf(issubclass(A, (B,)))
+ self.failIf(issubclass(B, A))
+ self.failIf(issubclass(B, (A,)))
+ class C:
+ __metaclass__ = abc.ABCMeta
+ A.register(B)
+ class B1(B):
+ pass
+ self.failUnless(issubclass(B1, A))
+ self.failUnless(issubclass(B1, (A,)))
+ class C1(C):
+ pass
+ B1.register(C1)
+ self.failIf(issubclass(C, B))
+ self.failIf(issubclass(C, (B,)))
+ self.failIf(issubclass(C, B1))
+ self.failIf(issubclass(C, (B1,)))
+ self.failUnless(issubclass(C1, A))
+ self.failUnless(issubclass(C1, (A,)))
+ self.failUnless(issubclass(C1, B))
+ self.failUnless(issubclass(C1, (B,)))
+ self.failUnless(issubclass(C1, B1))
+ self.failUnless(issubclass(C1, (B1,)))
+ C1.register(int)
+ class MyInt(int):
+ pass
+ self.failUnless(issubclass(MyInt, A))
+ self.failUnless(issubclass(MyInt, (A,)))
+ self.failUnless(isinstance(42, A))
+ self.failUnless(isinstance(42, (A,)))
+
+ def test_all_new_methods_are_called(self):
+ class A:
+ __metaclass__ = abc.ABCMeta
+ class B(object):
+ counter = 0
+ def __new__(cls):
+ B.counter += 1
+ return super(B, cls).__new__(cls)
+ class C(A, B):
+ pass
+ self.assertEqual(B.counter, 0)
+ C()
+ self.assertEqual(B.counter, 1)
+
+
+def test_main():
+ test_support.run_unittest(TestABC)
+
+
+if __name__ == "__main__":
+ unittest.main()