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# Python test set -- part 2, opcodes
import unittest
from test import ann_module, support
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__, encoding="utf-8") as f:
txt = f.read()
co = compile(txt, ann_module.__file__, 'exec')
self.assertEqual(co.co_firstlineno, 1)
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):
# Don't rely on the existence of the '__annotations__' global.
with support.swap_item(globals(), '__annotations__', {}):
del globals()['__annotations__']
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()
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