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from .ut_utils import BinaryObjectClass
from functools import partial
from .ut_utils import ForgeTestCase
from .ut_utils import build_new_style_class
from .ut_utils import build_old_style_class
from .ut_utils import Method
from forge import UnexpectedCall
class _SpecialMethodsTest:
def setUp(self):
super(_SpecialMethodsTest, self).setUp()
self.obj = self.forge.create_mock(self.CTOR([
Method("__len__(self)"),
Method("__setitem__(self, item, value)"),
Method("__getitem__(self, item)"),
Method('__delitem__(self, item)'),
Method('__iter__(self)'),
Method('__call__(self, a, b, c)'),
Method('__contains__(self, item)'),
Method('__nonzero__(self)'),
Method('__bool__(self)'),
]))
def tearDown(self):
self.forge.verify()
self.assertNoMoreCalls()
super(_SpecialMethodsTest, self).tearDown()
def test__len(self):
self.obj.__len__().and_return(2)
self.forge.replay()
self.assertEqual(len(self.obj), 2)
def test__setitem_explicit(self):
self.obj.__setitem__('a', 'b')
self.forge.replay()
self.obj['a'] = 'b'
def test__setitem_implicit(self):
self.obj['a'] = 'b'
self.forge.replay()
self.obj['a'] = 'b'
def test__setitem_mismatch(self):
self.obj['a'] = 'b'
self.forge.replay()
with self.assertRaises(UnexpectedCall):
self.obj['a'] = 'c'
self.assertEqual(len(self.forge.queue), 1)
self.forge.reset()
def test__getitem_explicit(self):
self.obj.__getitem__(2).and_return(3)
self.forge.replay()
self.assertEqual(self.obj[2], 3)
def test__getitem_implicit(self):
self.obj[2].and_return(3)
self.forge.replay()
self.assertEqual(self.obj[2], 3)
def test__getitem_mismatch(self):
self.obj[2].and_return(3)
self.forge.replay()
with self.assertRaises(UnexpectedCall):
self.obj[3]
self.assertEqual(len(self.forge.queue), 1)
self.forge.reset()
def test__delitem_explicit(self):
self.obj.__delitem__(2)
self.forge.replay()
del self.obj[2]
def test__delitem_implicit(self):
del self.obj[2]
self.forge.replay()
del self.obj[2]
def test__delitem_mismatch(self):
del self.obj[2]
self.forge.replay()
with self.assertRaises(UnexpectedCall):
del self.obj[3]
self.assertEqual(len(self.forge.queue), 1)
self.forge.reset()
def test__iter(self):
expected_result = [1, 3, 4, 5]
self.obj.__iter__().and_return(iter(expected_result))
self.forge.replay()
l = [x for x in self.obj]
self.assertEqual(l, expected_result)
def test__call(self):
self.obj(1, 2, c=3).and_return(5)
self.forge.replay()
self.assertEqual(self.obj(1, 2, c=3), 5)
def test__call_mismatch(self):
self.obj(1, 2, c=3).and_return(5)
self.forge.replay()
with self.assertRaises(UnexpectedCall):
self.obj(1, 2, c=4)
self.assertEqual(len(self.forge.queue), 1)
self.forge.reset()
def test__contains_explicit(self):
self.obj.__contains__(2).and_return(True)
self.obj.__contains__(2).and_return(False)
self.forge.replay()
self.assertTrue(2 in self.obj)
self.assertFalse(2 in self.obj)
def test__contains_mismatch(self):
self.obj.__contains__(2).and_return(True)
self.forge.replay()
with self.assertRaises(UnexpectedCall):
3 in self.obj
self.assertEqual(len(self.forge.queue), 1)
self.forge.reset()
def test__boolean(self):
self.obj.__bool__().and_return(False)
self.forge.replay()
self.assertFalse(self.obj)
class NewStyleSpecialMethodsTest(_SpecialMethodsTest, ForgeTestCase):
CTOR = staticmethod(build_new_style_class)
class OldStyleSpecialMethodsTest(_SpecialMethodsTest, ForgeTestCase):
CTOR = staticmethod(build_old_style_class)
class _SpecialMethodAbsenceTest:
def tearDown(self):
self.forge.verify()
self.assertNoMoreCalls()
super(_SpecialMethodAbsenceTest, self).tearDown()
def test__special_method_absence(self):
for statement in self._get_invalid_statements():
with self.assertRaises(TypeError):
exec(statement)
def test__boolean(self):
self.assertTrue(self.obj)
def _get_invalid_statements(self):
return [
'len(self.obj)',
'self.obj.__setitem__(1, 2)',
'self.obj[1] = 2',
'self.obj.__getitem__(1)',
'self.obj[1]',
'del self.obj[1]',
'self.obj.__delitem__(1)',
'list(self.obj)',
'iter(self.obj)',
'self.obj(1, 2, 3)',
'self.obj()',
'3 in self.obj'
]
class NewStyleSpecialMethodsAbsenceTest(_SpecialMethodAbsenceTest, ForgeTestCase):
def setUp(self):
super(NewStyleSpecialMethodsAbsenceTest, self).setUp()
self.obj = self.forge.create_mock(build_new_style_class())
class OldStyleSpecialMethodsAbsenceTest(_SpecialMethodAbsenceTest, ForgeTestCase):
def setUp(self):
super(OldStyleSpecialMethodsAbsenceTest, self).setUp()
self.obj = self.forge.create_mock(build_old_style_class())
class CallCornerCasesTest(ForgeTestCase):
def test__callable_metaclass(self):
class Object(object):
class __metaclass__(type):
def __call__(self, a, b, c):
return 2
obj = self.forge.create_mock(Object)
with self.assertRaises(TypeError):
obj(1, 2, 3)
def test__non_callable_binary_classes(self):
obj = self.forge.create_mock(type(BinaryObjectClass()))
with self.assertRaises(TypeError):
obj(1, 2, 3)
def test__callable_binary_classes(self):
obj = self.forge.create_mock(partial)
obj(1, 2, 3)
self.forge.replay()
obj(1, 2, 3)
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