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# Python test set -- part 2, opcodes import unittest from test import ann_module class OpcodeTest(unittest.TestCase): def test_try_inside_for_loop(self): n = 0 for i in range(10): n = n+i try: 1/0 except NameError: pass except ZeroDivisionError: pass except TypeError: pass try: pass except: pass try: pass finally: pass n = n+i if n != 90: self.fail('try inside for') def test_setup_annotations_line(self): # check that SETUP_ANNOTATIONS does not create spurious line numbers try: with open(ann_module.__file__) as f: txt = f.read() co = compile(txt, ann_module.__file__, 'exec') self.assertEqual(co.co_firstlineno, 6) except OSError: pass def test_no_annotations_if_not_needed(self): class C: pass with self.assertRaises(AttributeError): C.__annotations__ def test_use_existing_annotations(self): ns = {'__annotations__': {1: 2}} exec('x: int', ns) self.assertEqual(ns['__annotations__'], {'x': int, 1: 2}) def test_do_not_recreate_annotations(self): class C: del __annotations__ with self.assertRaises(NameError): x: int def test_raise_class_exceptions(self): class AClass(Exception): pass class BClass(AClass): pass class CClass(Exception): pass class DClass(AClass): def __init__(self, ignore): pass try: raise AClass() except: pass try: raise AClass() except AClass: pass try: raise BClass() except AClass: pass try: raise BClass() except CClass: self.fail() except: pass a = AClass() b = BClass() try: raise b except AClass as v: self.assertEqual(v, b) else: self.fail("no exception") # not enough arguments ##try: raise BClass, a ##except TypeError: pass ##else: self.fail("no exception") try: raise DClass(a) except DClass as v: self.assertIsInstance(v, DClass) else: self.fail("no exception") def test_compare_function_objects(self): f = eval('lambda: None') g = eval('lambda: None') self.assertNotEqual(f, g) f = eval('lambda a: a') g = eval('lambda a: a') self.assertNotEqual(f, g) f = eval('lambda a=1: a') g = eval('lambda a=1: a') self.assertNotEqual(f, g) f = eval('lambda: 0') g = eval('lambda: 1') self.assertNotEqual(f, g) f = eval('lambda: None') g = eval('lambda a: None') self.assertNotEqual(f, g) f = eval('lambda a: None') g = eval('lambda b: None') self.assertNotEqual(f, g) f = eval('lambda a: None') g = eval('lambda a=None: None') self.assertNotEqual(f, g) f = eval('lambda a=0: None') g = eval('lambda a=1: None') self.assertNotEqual(f, g) def test_modulo_of_string_subclasses(self): class MyString(str): def __mod__(self, value): return 42 self.assertEqual(MyString() % 3, 42) if __name__ == '__main__': unittest.main()