def attach_mock_provider(consumer, ports):
assert isinstance(consumer, INeed)
assert isinstance(ports, (list, dict))
invalid_ports = set(ports).difference(consumer.get_needs())
if invalid_ports:
raise UnknownPort('Invalid ports for {} - {}'.format(
consumer, ', '.join(invalid_ports)))
# create the underlying object that will hold all the mock functions for the specified ports
template_funcs = get_template_funcs(service=consumer)
template_func_subset = {port: template_funcs[port] for port in ports}
template_class = type('Mock' + consumer.__class__.__name__, (),
template_func_subset)
provider_impl = mock.create_autospec(spec=template_class,
spec_set=True,
instance=True)
# supply return_value if provider
if isinstance(ports, dict):
for port, value in ports.iteritems():
getattr(provider_impl, port).return_value = value
provider = object_as_provider(provider=provider_impl, ports=ports)
auto_wire(components=[consumer, provider])
return provider_impl
def test_wiring_domain_to_a_service(self):
x = 1234
y = 98716
expected_values = self._get_expected_values_of_D_domain(x=x, y=y)
_, _, _, D = self._get_service_and_domain_classes()
domain = D()
provider = self._get_provider_service(x, y)()
auto_wire([domain, provider])
self.assertEqual(expected_values['a1'], domain.a1())
self.assertEqual(expected_values['b2'], domain.b2())
def test_connecting_service_to_a_func_converted_to_a_provider(self):
def some_func():
return 'yolo'
service = MyTestService()
dep_provider = func_as_provider(func=some_func, port='external_dep')
# before wiring
self.assertRaises(DisconnectedPort, service.call_me_maybe)
# after wiring
auto_wire([service, dep_provider])
self.assertEqual('yolo', service.call_me_maybe())
def test_connecting_service_to_a_lambda_converted_to_a_provider(self):
service = MyTestService()
dep_provider = func_as_provider(func=lambda: 'Lambada!',
port='external_dep')
# before wiring
self.assertRaises(DisconnectedPort, service.call_me_maybe)
# after wiring
auto_wire([service, dep_provider])
self.assertEqual('Lambada!', service.call_me_maybe())
self.assertRaises(UnknownPort, dep_provider.get_provider_func,
'not_a_port')
def test_auto_wiring_of_ports_from_a_collection_of_component_instances(
self):
A, B, C = self.get_services()
a = A()
b = B()
c = C()
auto_wire([a, b, c])
self.assertEqual(b, a.get_provider('b1'))
self.assertEqual(c, b.get_provider('c1'))
self.assertRaises(DisconnectedPort, a.get_provider, 'x')
self.assertRaises(DisconnectedPort, b.get_provider, 'y')
def test_connecting_service_to_a_classmethod_converted_to_a_provider(self):
class Deppy(object):
@classmethod
def wowza(cls):
return cls.__name__
service = MyTestService()
dep_provider = func_as_provider(func=Deppy.wowza, port='external_dep')
# before wiring
self.assertRaises(DisconnectedPort, service.call_me_maybe)
# after wiring
auto_wire([service, dep_provider])
self.assertEqual('Deppy', service.call_me_maybe())
def test_connecting_service_to_class_with_staticmethod_converted_to_a_provider(
self):
class Deppy(object):
@staticmethod
def external_dep():
return 'Sassy'
service = MyTestService()
dep_provider = object_as_provider(provider=Deppy,
ports=['external_dep'])
# before wiring
self.assertRaises(DisconnectedPort, service.call_me_maybe)
# after wiring
auto_wire([service, dep_provider])
self.assertEqual('Sassy', service.call_me_maybe())
def test_wiring_domain_to_a_domain(self):
x = 1234
y = 98716
expected_values = self._get_expected_values_of_D_domain(x=x, y=y)
_, _, _, D = self._get_service_and_domain_classes()
domain = D()
ProviderService = self._get_provider_service(x, y)
class ProviderDomain(Domain):
__services__ = [ProviderService]
__provides__ = ['x', 'y']
auto_wire([domain, ProviderDomain()])
self.assertEqual(expected_values['a1'], domain.a1())
self.assertEqual(expected_values['b2'], domain.b2())
def test_connecting_service_to_an_obj_converted_to_a_provider(self):
class Regurgitator(object):
def __init__(self, value):
self.value = value
def external_dep(self):
return self.value
service = MyTestService()
provider = Regurgitator('kapow!')
dep_provider = object_as_provider(provider=provider,
ports=['external_dep'])
# before wiring
self.assertRaises(DisconnectedPort, service.call_me_maybe)
# after wiring
auto_wire([service, dep_provider])
self.assertEqual('kapow!', service.call_me_maybe())
def test_wiring_service_to_a_domain(self):
x = 1234
y = 98716
expected_values = self._get_expected_values_of_D_domain(x=x, y=y)
_, _, _, D = self._get_service_and_domain_classes()
class MultiplierService(Service):
deps = Needs(['a1', 'b2'])
@provides
def multiplied(self):
return self.deps.a1() * self.deps.b2()
domain = D()
provider = self._get_provider_service(x, y)()
multiplier_service = MultiplierService()
auto_wire([domain, provider, multiplier_service])
self.assertEqual(expected_values['a1'], domain.a1())
self.assertEqual(expected_values['b2'], domain.b2())
self.assertEqual(expected_values['a1'] * expected_values['b2'], multiplier_service.multiplied())
def test_instances_of_same_domain_are_isolated(self):
x = 1234
y = 98716
expected_values = self._get_expected_values_of_D_domain(x=x, y=y)
_, _, _, D = self._get_service_and_domain_classes()
domain = D()
another_domain = D()
provider = self._get_provider_service(x, y)()
auto_wire([domain, provider])
# first instance wired
self.assertEqual(expected_values['a1'], domain.a1())
self.assertEqual(expected_values['b2'], domain.b2())
# other instance remains disconnected
with self.assertRaisesRegexp(DisconnectedPort, 'Port .+ has not been connected'):
another_domain.a1()
with self.assertRaisesRegexp(DisconnectedPort, 'Port .+ has not been connected'):
another_domain.b2()
