def test_should_return_different_instances(self):
pinsor = PinsorContainer()
pinsor.addcomponent(FakeObj, key="comp.fake1")
pinsor.addcomponent(FakeObj, key="comp.fake2")
fake1 = pinsor.resolve(key="comp.fake1")
fake2 = pinsor.resolve(key="comp.fake2")
self.assertNotEqual(id(fake1), id(fake2))
def test_should_return_new_instance_each_time_resolve_is_called_when_lifestyle_of_that_component_is_set_to_transient(self):
pinsor = PinsorContainer()
pinsor.addcomponent(FakeObj, depends=[], lifestyle = LifeStyle.transient)
fakeobj1 = pinsor.resolve(FakeObj)
fakeobj2 = pinsor.resolve(FakeObj)
assert isinstance(fakeobj1, FakeObj)
assert isinstance(fakeobj2, FakeObj)
self.assertNotEqual(id(fakeobj1), id(fakeobj2))
def test_should_throw_an_exception_when_circular_dependency_is_found(self):
pinsor = PinsorContainer()
pinsor.addcomponent(CircularDependencyA, depends=[CircularDependencyB])
pinsor.addcomponent(CircularDependencyB, depends=[CircularDependencyA])
try:
depA = pinsor.resolve(CircularDependencyA)
except CircularDependencyException:
pass
else:
self.fail("This should raise an exception")
class container_tests(unittest.TestCase):
def setUp(self):
self.pinsor = PinsorContainer()
self.pinsor.addcomponent(FakeObj)
def test_should_retrieve_class_instantiated(self):
fakeinstance = self.pinsor.resolve(FakeObj)
assert isinstance(fakeinstance, FakeObj)
def test_should_build_class_with_one_dependency(self):
self.pinsor.addcomponent(NeedsFakeObj, depends=[FakeObj])
needsfake = self.pinsor.resolve(NeedsFakeObj)
assert isinstance(needsfake, NeedsFakeObj)
assert needsfake.HasFakeObj()
def test_should_instantiate_all_objects_in_dependency_tree(self):
self.pinsor.addcomponent(NeedsFakeObj, depends=[FakeObj])
self.pinsor.addcomponent(FakeObjWithArgs, depends=[FakeObj, NeedsFakeObj])
fakeobj = self.pinsor.resolve(FakeObjWithArgs)
assert isinstance(fakeobj, FakeObjWithArgs)
assert fakeobj.DoesStuff()
def test_should_return_same_instance_each_time_resolve_is_called_by_default(self):
fakeobj1 = self.pinsor.resolve(FakeObj)
fakeobj2 = self.pinsor.resolve(FakeObj)
self.assertEqual(id(fakeobj1), id(fakeobj2))
def test_should_return_new_instance_each_time_resolve_is_called_when_lifestyle_of_that_component_is_set_to_transient(self):
pinsor = PinsorContainer()
pinsor.addcomponent(FakeObj, depends=[], lifestyle = LifeStyle.transient)
fakeobj1 = pinsor.resolve(FakeObj)
fakeobj2 = pinsor.resolve(FakeObj)
assert isinstance(fakeobj1, FakeObj)
assert isinstance(fakeobj2, FakeObj)
self.assertNotEqual(id(fakeobj1), id(fakeobj2))
def test_should_be_able_to_resolve_by_component_key(self):
pinsor = PinsorContainer()
pinsor.addcomponent(FakeObj, key="comp.fakeobj")
fakeobj = pinsor.resolve(key="comp.fakeobj")
assert isinstance(fakeobj, FakeObj)
def test_should_retrieve_dependencies_dependencies_by_key(self):
pinsor = PinsorContainer()
pinsor.addcomponent(FakeObj, key="comp.fakeobj")
pinsor.addcomponent(NeedsFakeObj, depends = [Config("comp.fakeobj")])
needsfake = pinsor.resolve(NeedsFakeObj)
assert needsfake.HasFakeObj
def test_should_throw_an_exception_when_circular_dependency_is_found(self):
pinsor = PinsorContainer()
pinsor.addcomponent(CircularDependencyA, depends=[CircularDependencyB])
pinsor.addcomponent(CircularDependencyB, depends=[CircularDependencyA])
try:
depA = pinsor.resolve(CircularDependencyA)
except CircularDependencyException:
pass
else:
self.fail("This should raise an exception")
def test_should_retrieve_dependencies_dependencies_by_key(self):
pinsor = PinsorContainer()
pinsor.addcomponent(FakeObj, key="comp.fakeobj")
pinsor.addcomponent(NeedsFakeObj, depends = [Config("comp.fakeobj")])
needsfake = pinsor.resolve(NeedsFakeObj)
assert needsfake.HasFakeObj
def test_should_be_able_to_resolve_by_component_key(self):
pinsor = PinsorContainer()
pinsor.addcomponent(FakeObj, key="comp.fakeobj")
fakeobj = pinsor.resolve(key="comp.fakeobj")
assert isinstance(fakeobj, FakeObj)
