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1# Python test set -- part 2, opcodes
2
3from test.test_support import run_unittest, check_py3k_warnings
4import unittest
5
6class OpcodeTest(unittest.TestCase):
7
8    def test_try_inside_for_loop(self):
9        n = 0
10        for i in range(10):
11            n = n+i
12            try: 1 // 0
13            except NameError: pass
14            except ZeroDivisionError: pass
15            except TypeError: pass
16            try: pass
17            except: pass
18            try: pass
19            finally: pass
20            n = n+i
21        if n != 90:
22            self.fail('try inside for')
23
24    def test_raise_class_exceptions(self):
25
26        class AClass: pass
27        class BClass(AClass): pass
28        class CClass: pass
29        class DClass(AClass):
30            def __init__(self, ignore):
31                pass
32
33        try: raise AClass()
34        except: pass
35
36        try: raise AClass()
37        except AClass: pass
38
39        try: raise BClass()
40        except AClass: pass
41
42        try: raise BClass()
43        except CClass: self.fail()
44        except: pass
45
46        a = AClass()
47        b = BClass()
48
49        try: raise AClass, b
50        except BClass, v:
51            self.assertEqual(v, b)
52        else: self.fail("no exception")
53
54        try: raise b
55        except AClass, v:
56            self.assertEqual(v, b)
57        else:
58            self.fail("no exception")
59
60        # not enough arguments
61        try:  raise BClass, a
62        except TypeError: pass
63        else: self.fail("no exception")
64
65        try:  raise DClass, a
66        except DClass, v:
67            self.assertIsInstance(v, DClass)
68        else:
69            self.fail("no exception")
70
71    def test_compare_function_objects(self):
72
73        f = eval('lambda: None')
74        g = eval('lambda: None')
75        self.assertNotEqual(f, g)
76
77        f = eval('lambda a: a')
78        g = eval('lambda a: a')
79        self.assertNotEqual(f, g)
80
81        f = eval('lambda a=1: a')
82        g = eval('lambda a=1: a')
83        self.assertNotEqual(f, g)
84
85        f = eval('lambda: 0')
86        g = eval('lambda: 1')
87        self.assertNotEqual(f, g)
88
89        f = eval('lambda: None')
90        g = eval('lambda a: None')
91        self.assertNotEqual(f, g)
92
93        f = eval('lambda a: None')
94        g = eval('lambda b: None')
95        self.assertNotEqual(f, g)
96
97        f = eval('lambda a: None')
98        g = eval('lambda a=None: None')
99        self.assertNotEqual(f, g)
100
101        f = eval('lambda a=0: None')
102        g = eval('lambda a=1: None')
103        self.assertNotEqual(f, g)
104
105    def test_modulo_of_string_subclasses(self):
106        class MyString(str):
107            def __mod__(self, value):
108                return 42
109        self.assertEqual(MyString() % 3, 42)
110
111
112def test_main():
113    with check_py3k_warnings(("exceptions must derive from BaseException",
114                              DeprecationWarning),
115                             ("catching classes that don't inherit "
116                              "from BaseException is not allowed",
117                              DeprecationWarning)):
118        run_unittest(OpcodeTest)
119
120if __name__ == '__main__':
121    test_main()
122