def test_creates_callable_mapped_to_config_dict(self):
config = [(call(1), 2), (call("a"), 3), (call(1, b=2), 4), (call(c=3), 5)]
side_effecet = effect(*config)
self.assertEqual(side_effecet(1), 2)
self.assertEqual(side_effecet("a"), 3)
self.assertEqual(side_effecet(1, b=2), 4)
self.assertEqual(side_effecet(c=3), 5)
def test_creates_callable_mapped_to_config_dict(self):
config = [(call(1), 2), (call('a'), 3), (call(1, b=2), 4),
(call(c=3), 5)]
side_effect = effect(*config)
self.assertEqual(side_effect(1), 2)
self.assertEqual(side_effect('a'), 3)
self.assertEqual(side_effect(1, b=2), 4)
self.assertEqual(side_effect(c=3), 5)
def test_can_be_used_with_various_iterators(self):
side_effect = effect((call(1), itertools.repeat(10, 3)))
for i in range(3):
self.assertEqual(side_effect(1), 10)
with self.assertRaises(TypeError):
side_effect(1)
#trying another iterator
side_effect = effect((call(1), itertools.chain([1, 1, 1], [2, 2, 2])))
for i in range(3):
self.assertEqual(side_effect(1), 1)
for i in range(3):
self.assertEqual(side_effect(1), 2)
with self.assertRaises(TypeError):
side_effect(1)
def test_can_be_used_with_various_iterators(self):
side_effect = effect((call(1), itertools.repeat(10, 3)))
for i in range(3):
self.assertEqual(side_effect(1), 10)
with self.assertRaises(TypeError):
side_effect(1)
#trying another iterator
side_effect = effect((call(1), itertools.chain([1,1,1], [2,2,2])))
for i in range(3):
self.assertEqual(side_effect(1), 1)
for i in range(3):
self.assertEqual(side_effect(1), 2)
with self.assertRaises(TypeError):
side_effect(1)
def test_dicts_should_be_returned_as_is(self):
config = (
(call('A dict should always be returned as is'), {'this': 'is a dict'}),
)
side_effect = effect(*config)
self.assertEqual(side_effect('A dict should always be returned as is'), {'this': 'is a dict'})
self.assertEqual(side_effect('A dict should always be returned as is'), {'this': 'is a dict'})
def test_can_be_used_to_return_class(self):
class Some(object):
pass
side_effect = effect((call(1), Some))
self.assertEqual(side_effect(1), Some)
self.assertEqual(side_effect(1), Some) #always returns Some
def test_empty_sequential_config_raises_exception_on_first_call(self):
config = (
(call('Empty iterable, raises TypeError on first call'), []),
)
side_effect = effect(*config)
with self.assertRaises(TypeError):
side_effect('Empty iterable, raises TypeError on first call')
def test_sequential_config_with_one_element_called_only_once(self):
config = ((call('with 2, followed by TypeError'), ['with 2']), )
side_effect = effect(*config)
self.assertEqual(side_effect('with 2, followed by TypeError'),
'with 2')
with self.assertRaises(TypeError):
side_effect('with 2, followed by TypeError')
def test_you_can_put_data_structures_into_infinite_sequential_configs(self):
config = (
(call('Always a dict'), itertools.cycle([{'this': 'is a dict in a list'}])),
)
side_effect = effect(*config)
self.assertEqual(side_effect('Always a dict'), {'this': 'is a dict in a list'})
self.assertEqual(side_effect('Always a dict'), {'this': 'is a dict in a list'})
def test_you_can_put_data_structures_into_sequential_configs(self):
config = (
(call('returns a dict and then TypeError'), [{'this': 'is a dict in a list'}]),
)
side_effect = effect(*config)
self.assertEqual(side_effect('returns a dict and then TypeError'), {'this': 'is a dict in a list'})
with self.assertRaises(TypeError):
side_effect('returns a dict and then TypeError')
def test_sequential_config_with_one_element_called_only_once(self):
config = (
(call('with 2, followed by TypeError'), ['with 2']),
)
side_effect = effect(*config)
self.assertEqual(side_effect('with 2, followed by TypeError'), 'with 2')
with self.assertRaises(TypeError):
side_effect('with 2, followed by TypeError')
def test_can_be_used_to_return_instance(self):
class Some(object):
pass
side_effect = effect((call(1), Some()))
self.assertEqual(side_effect(1).__class__, Some().__class__)
self.assertEqual(side_effect(1).__class__,
Some().__class__) #always returns a Some instance
def test_can_be_used_to_return_mock_instance(self):
side_effect = effect((call(1), Mock()))
self.assertEqual(
side_effect(1).__class__.__name__,
Mock().__class__.__name__)
self.assertEqual(
side_effect(1).__class__.__name__,
Mock().__class__.__name__) #always returns a Mock instance
def test_using_cycle_config_can_be_called_infinitely(self):
config = ((call('Can be called forever'),
itertools.cycle(['with 1', 'with 1 again'])), )
side_effect = effect(*config)
self.assertEqual(side_effect('Can be called forever'), 'with 1')
self.assertEqual(side_effect('Can be called forever'), 'with 1 again')
self.assertEqual(side_effect('Can be called forever'), 'with 1')
self.assertEqual(side_effect('Can be called forever'), 'with 1 again')
def test_dicts_should_be_returned_as_is(self):
config = ((call('A dict should always be returned as is'), {
'this': 'is a dict'
}), )
side_effect = effect(*config)
self.assertEqual(side_effect('A dict should always be returned as is'),
{'this': 'is a dict'})
self.assertEqual(side_effect('A dict should always be returned as is'),
{'this': 'is a dict'})
def test_sequential_config_with_multiple_elements_each_called_only_once(self):
config = (
(call('with 1, again and then TypeError'), ['with 1', 'with 1 again']),
)
side_effect = effect(*config)
self.assertEqual(side_effect('with 1, again and then TypeError'), 'with 1')
self.assertEqual(side_effect('with 1, again and then TypeError'), 'with 1 again')
with self.assertRaises(TypeError):
side_effect('with 1, again and then TypeError')
def test_using_cycle_config_can_be_called_infinitely(self):
config = (
(call('Can be called forever'), itertools.cycle(['with 1', 'with 1 again'])),
)
side_effect = effect(*config)
self.assertEqual(side_effect('Can be called forever'), 'with 1')
self.assertEqual(side_effect('Can be called forever'), 'with 1 again')
self.assertEqual(side_effect('Can be called forever'), 'with 1')
self.assertEqual(side_effect('Can be called forever'), 'with 1 again')
def test_you_can_put_data_structures_into_sequential_configs(self):
config = ((call('returns a dict and then TypeError'), [{
'this':
'is a dict in a list'
}]), )
side_effect = effect(*config)
self.assertEqual(side_effect('returns a dict and then TypeError'),
{'this': 'is a dict in a list'})
with self.assertRaises(TypeError):
side_effect('returns a dict and then TypeError')
def test_sequential_config_with_multiple_elements_each_called_only_once(
self):
config = ((call('with 1, again and then TypeError'),
['with 1', 'with 1 again']), )
side_effect = effect(*config)
self.assertEqual(side_effect('with 1, again and then TypeError'),
'with 1')
self.assertEqual(side_effect('with 1, again and then TypeError'),
'with 1 again')
with self.assertRaises(TypeError):
side_effect('with 1, again and then TypeError')
def test_you_can_put_data_structures_into_infinite_sequential_configs(
self):
config = ((call('Always a dict'),
itertools.cycle([{
'this': 'is a dict in a list'
}])), )
side_effect = effect(*config)
self.assertEqual(side_effect('Always a dict'),
{'this': 'is a dict in a list'})
self.assertEqual(side_effect('Always a dict'),
{'this': 'is a dict in a list'})
def test_sequential_config_with_generator(self):
def ten_times():
for i in range(9):
yield i
config = (
(call('can be called ten times'), ten_times()),#note generator must be called
)
side_effect = effect(*config)
for i in range(9):
self.assertEqual(side_effect('can be called ten times'), i)
with self.assertRaises(TypeError):
side_effect('can be called ten times')
def test_sequential_config_with_generator(self):
def ten_times():
for i in range(9):
yield i
config = (
(call('can be called ten times'),
ten_times()), #note generator must be called
)
side_effect = effect(*config)
for i in range(9):
self.assertEqual(side_effect('can be called ten times'), i)
with self.assertRaises(TypeError):
side_effect('can be called ten times')
def test_sequential_callable_with_a_bunch_of_configs(self):
config = (
(call(1), itertools.cycle(['with 1', 'with 1 again'])),
(call(2), 'with 2'),
(call(3), ['with 3',]),
(call(4), []),
(call(5), [{'this': 'is a dict in a list'}]),
(call(6), {'this': 'is a dict'})
)
side_effect = effect(*config)
self.assertEqual(side_effect(1), 'with 1')
self.assertEqual(side_effect(2), 'with 2')
self.assertEqual(side_effect(3), 'with 3')
self.assertEqual(side_effect(1), 'with 1 again')
self.assertEqual(side_effect(1), 'with 1')
self.assertEqual(side_effect(2), 'with 2')#second call
with self.assertRaises(TypeError):
side_effect(3)
with self.assertRaises(TypeError):
side_effect(4)
self.assertEqual(side_effect(5), {'this': 'is a dict in a list'})
with self.assertRaises(TypeError):
side_effect(5)
self.assertEqual(side_effect(6), {'this': 'is a dict'})
def test_sequential_callable_with_a_bunch_of_configs(self):
config = ((call(1), itertools.cycle(['with 1', 'with 1 again'])),
(call(2), 'with 2'), (call(3), [
'with 3',
]), (call(4), []), (call(5), [{
'this': 'is a dict in a list'
}]), (call(6), {
'this': 'is a dict'
}))
side_effect = effect(*config)
self.assertEqual(side_effect(1), 'with 1')
self.assertEqual(side_effect(2), 'with 2')
self.assertEqual(side_effect(3), 'with 3')
self.assertEqual(side_effect(1), 'with 1 again')
self.assertEqual(side_effect(1), 'with 1')
self.assertEqual(side_effect(2), 'with 2') #second call
with self.assertRaises(TypeError):
side_effect(3)
with self.assertRaises(TypeError):
side_effect(4)
self.assertEqual(side_effect(5), {'this': 'is a dict in a list'})
with self.assertRaises(TypeError):
side_effect(5)
self.assertEqual(side_effect(6), {'this': 'is a dict'})
def test_raises_type_error_when_called_with_unknown_args(self):
side_effect = effect((call(1), 5))
self.assertRaises(TypeError, side_effect, "junk")
def test_can_be_used_to_return_mock_instance(self):
side_effect = effect((call(1), Mock()))
self.assertEqual(side_effect(1).__class__.__name__, Mock().__class__.__name__)
self.assertEqual(side_effect(1).__class__.__name__, Mock().__class__.__name__)#always returns a Mock instance
def test_can_be_used_with_mutable_data_structs(self):
side_effect = effect((call([1, 2, 3]), 'list'))
self.assertEqual(side_effect([1, 2, 3]), 'list')
def test_can_be_used_to_return_instance(self):
class Some(object):
pass
side_effect = effect((call(1), Some()))
self.assertEqual(side_effect(1).__class__, Some().__class__)
self.assertEqual(side_effect(1).__class__, Some().__class__)#always returns a Some instance
def test_can_be_used_with_mutable_data_structs(self):
side_effect = effect((call([1, 2, 3]), "list"))
self.assertEqual(side_effect([1, 2, 3]), "list")
def test_raises_type_error_when_called_with_unknown_args(self):
side_effect = effect((call(1), 5))
self.assertRaises(TypeError, side_effect, 'junk')
def test_can_be_used_to_return_class(self):
class Some(object):
pass
side_effect = effect((call(1), Some))
self.assertEqual(side_effect(1), Some)
self.assertEqual(side_effect(1), Some)#always returns Some
def test_empty_sequential_config_raises_exception_on_first_call(self):
config = ((call('Empty iterable, raises TypeError on first call'),
[]), )
side_effect = effect(*config)
with self.assertRaises(TypeError):
side_effect('Empty iterable, raises TypeError on first call')