def test_allows_any_arguments_if_none_are_specified(self):
subject = InstanceDouble('doubles.testing.User')
allow(subject).method_with_positional_arguments.and_return('bar')
assert subject.method_with_positional_arguments(
'unspecified argument') == 'bar'
def test_returns_result_of_a_callable_with_positional_arg(self, stubber):
subject = InstanceDouble('doubles.testing.User')
stubber(subject).method_with_positional_arguments.and_return_result_of(
lambda x: x)
assert subject.method_with_positional_arguments('bar') == 'bar'
def test__call__is_short_hand_for_with_args(self):
subject = InstanceDouble('doubles.testing.User')
allow(subject).method_with_positional_arguments('Bob').and_return(
'Barker')
assert subject.method_with_positional_arguments('Bob') == 'Barker'
def test_objects_with_custom__eq__method_two(self):
subject = InstanceDouble('doubles.testing.User')
allow(subject).method_with_positional_arguments.with_args(
AlwaysEquals())
subject.method_with_positional_arguments(NeverEquals())
class TestCustomMatcher(object):
def setup(self):
self.subject = InstanceDouble('doubles.testing.User')
def test_matcher_raises_an_exception(self):
def func():
raise Exception('Bob Barker')
allow(self.subject).instance_method.with_args_validator(func)
with raises(UnallowedMethodCallError):
self.subject.instance_method()
def test_matcher_with_no_args_returns_true(self):
allow(self.subject).instance_method.with_args_validator(
lambda: True).and_return('Bob')
self.subject.instance_method() == 'Bob'
def test_matcher_with_no_args_returns_false(self):
allow(self.subject).instance_method.with_args_validator(lambda: False)
with raises(UnallowedMethodCallError):
self.subject.instance_method()
def test_matcher_with_positional_args_returns_true(self):
(allow(
self.subject).method_with_positional_arguments.with_args_validator(
lambda x: True).and_return('Bob'))
self.subject.method_with_positional_arguments('Bob Barker') == 'Bob'
def test_matcher_with_positional_args_returns_false(self):
allow(
self.subject).method_with_positional_arguments.with_args_validator(
lambda x: False)
with raises(UnallowedMethodCallError):
self.subject.method_with_positional_arguments('Bob Barker')
def test_matcher_with_kwargs_args_returns_false(self):
def func(bar=None):
return False
allow(self.subject).instance_method.with_args_validator(func)
with raises(UnallowedMethodCallError):
self.subject.instance_method()
def test_matcher_with_kwargs_args_returns_true(self):
def func(bar=None):
return True
allow(self.subject).instance_method.with_args_validator(
func).and_return('Bob')
self.subject.instance_method() == 'Bob'
def test_matcher_with_positional_and_kwargs_returns_true(self):
def func(foo, bar=None):
return True
allow(self.subject).method_with_default_args.with_args_validator(
func).and_return('Bob')
self.subject.method_with_default_args('bob', bar='Barker') == 'Bob'
def test_matcher_with_positional_and_kwargs_returns_false(self):
def func(foo, bar=None):
return False
allow(self.subject).method_with_default_args.with_args_validator(
func).and_return('Bob')
with raises(UnallowedMethodCallError):
self.subject.method_with_default_args('bob', bar='Barker')
def test_matcher_returns_true_but_args_do_not_match_call_signature(self):
allow(self.subject).instance_method.with_args_validator(lambda x: True)
with raises(VerifyingDoubleArgumentError):
self.subject.instance_method('bob')
def test_allows_specification_of_arguments(self):
subject = InstanceDouble('doubles.testing.User')
allow(subject).method_with_positional_arguments.with_args('foo')
assert subject.method_with_positional_arguments('foo') is None
def test_returns_result_of_a_callable_with_positional_arg(self, stubber):
subject = InstanceDouble('doubles.testing.User')
stubber(subject).method_with_positional_arguments.and_return_result_of(lambda x: x)
assert subject.method_with_positional_arguments('bar') == 'bar'
def test_allows_specification_of_arguments(self):
subject = InstanceDouble('doubles.testing.User')
allow(subject).method_with_positional_arguments.with_args('foo')
assert subject.method_with_positional_arguments('foo') is None
def test_allows_any_arguments_if_none_are_specified(self):
subject = InstanceDouble('doubles.testing.User')
allow(subject).method_with_positional_arguments.and_return('bar')
assert subject.method_with_positional_arguments('unspecified argument') == 'bar'
def test__call__is_short_hand_for_with_args(self):
subject = InstanceDouble('doubles.testing.User')
allow(subject).method_with_positional_arguments('Bob').and_return('Barker')
assert subject.method_with_positional_arguments('Bob') == 'Barker'
def test_objects_with_custom__eq__method_two(self):
subject = InstanceDouble('doubles.testing.User')
allow(subject).method_with_positional_arguments.with_args(AlwaysEquals())
subject.method_with_positional_arguments(NeverEquals())
class TestCustomMatcher(object):
def setup(self):
self.subject = InstanceDouble('doubles.testing.User')
def test_matcher_raises_an_exception(self):
def func():
raise Exception('Bob Barker')
allow(self.subject).instance_method.with_args_validator(func)
with raises(UnallowedMethodCallError):
self.subject.instance_method()
def test_matcher_with_no_args_returns_true(self):
allow(self.subject).instance_method.with_args_validator(lambda: True).and_return('Bob')
self.subject.instance_method() == 'Bob'
def test_matcher_with_no_args_returns_false(self):
allow(self.subject).instance_method.with_args_validator(lambda: False)
with raises(UnallowedMethodCallError):
self.subject.instance_method()
def test_matcher_with_positional_args_returns_true(self):
(allow(self.subject)
.method_with_positional_arguments
.with_args_validator(lambda x: True)
.and_return('Bob'))
self.subject.method_with_positional_arguments('Bob Barker') == 'Bob'
def test_matcher_with_positional_args_returns_false(self):
allow(self.subject).method_with_positional_arguments.with_args_validator(lambda x: False)
with raises(UnallowedMethodCallError):
self.subject.method_with_positional_arguments('Bob Barker')
def test_matcher_with_kwargs_args_returns_false(self):
def func(bar=None):
return False
allow(self.subject).instance_method.with_args_validator(func)
with raises(UnallowedMethodCallError):
self.subject.instance_method()
def test_matcher_with_kwargs_args_returns_true(self):
def func(bar=None):
return True
allow(self.subject).instance_method.with_args_validator(func).and_return('Bob')
self.subject.instance_method() == 'Bob'
def test_matcher_with_positional_and_kwargs_returns_true(self):
def func(foo, bar=None):
return True
allow(self.subject).method_with_default_args.with_args_validator(func).and_return('Bob')
self.subject.method_with_default_args('bob', bar='Barker') == 'Bob'
def test_matcher_with_positional_and_kwargs_returns_false(self):
def func(foo, bar=None):
return False
allow(self.subject).method_with_default_args.with_args_validator(func).and_return('Bob')
with raises(UnallowedMethodCallError):
self.subject.method_with_default_args('bob', bar='Barker')
def test_matcher_returns_true_but_args_do_not_match_call_signature(self):
allow(self.subject).instance_method.with_args_validator(lambda x: True)
with raises(VerifyingDoubleArgumentError):
self.subject.instance_method('bob')
