def test_raises_if_arguments_were_specified_but_wrong_kwarg_used_when_called(
self):
subject = InstanceDouble('doubles.testing.User')
allow(subject).method_with_default_args.with_args('one', bar='two')
with raises(UnallowedMethodCallError) as e:
subject.method_with_default_args('one', bob='barker')
assert re.match(
r"Received unexpected call to 'method_with_default_args' on "
r"<InstanceDouble of <class '?doubles.testing.User'?"
r"(?: at 0x[0-9a-f]{9})?> object at .+>\."
r" The supplied arguments \('one', bob='barker'\)"
r" do not match any available allowances.", str(e.value))
def test_raises_if_arguments_were_specified_but_not_provided_when_called(self):
subject = InstanceDouble('doubles.testing.User')
allow(subject).method_with_default_args.with_args('one', bar='two')
with raises(UnallowedMethodCallError) as e:
subject.method_with_default_args()
assert re.match(
r"Received unexpected call to 'method_with_default_args' on "
r"<InstanceDouble of <class '?doubles.testing.User'?"
r"(?: at 0x[0-9a-f]{9})?> object at .+>\."
r" The supplied arguments \(\)"
r" do not match any available allowances.",
str(e.value)
)
def test_passes_if_method_is_called_with_specified_arguments(self):
subject = InstanceDouble('doubles.testing.User')
expect(subject).method_with_default_args.with_args('one', bar='two')
assert subject.method_with_default_args('one', bar='two') is None
def test_passes_if_method_is_called_with_specified_arguments(self):
subject = InstanceDouble('doubles.testing.User')
expect(subject).method_with_default_args.with_args('one', bar='two')
assert subject.method_with_default_args('one', bar='two') is None
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')
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')
