def test_constructor_binding__should_construct_singleton(self):
injector = Injector(
lambda binder: binder.bind_to_constructor(int, random))
instance0 = injector.get_instance(int)
instance1 = injector.get_instance(int)
assert instance0 == instance1
def test_runtime_binding__should_create_runtime_singleton(self):
class MyClass(object):
pass
injector = Injector()
instance0 = injector.get_instance(MyClass)
instance1 = injector.get_instance(MyClass)
assert instance0 is instance1
assert isinstance(instance0, MyClass)
def test_runtime_binding__should_create_runtime_singleton(self):
class MyClass(object):
pass
injector = Injector()
instance0 = injector.get_instance(MyClass)
instance1 = injector.get_instance(MyClass)
assert instance0 is instance1
assert isinstance(instance0, MyClass)
class LazyImportTestCase(unittest.TestCase):
def setUp(self):
self.injector = Injector()
self.injector.register()
def tearDown(self):
self.injector.unregister()
def testObjProperty(self):
'''LazyImport should lazily reference an object.'''
self.assertTrue(LazyRef.obj is Ref)
def testHashEq(self):
'''LazyImport should be equal to the ref object, and has the same hash.'''
self.assertEqual(hash(LazyRef), hash(Ref))
self.assertEqual(LazyRef, Ref)
def testInjection(self):
'''LazyImport in injections.'''
class B(object):
a = inject.attr(inject.lazy('inject_tests.fixtures.lazy.A'))
b = B()
from inject_tests.fixtures.lazy import A
a = A()
self.injector.bind(A, a)
self.assertTrue(b.a is a)
def test_instance_binding__should_use_the_same_instance(self):
injector = Injector(lambda binder: binder.bind(int, 123))
instance = injector.get_instance(int)
assert instance == 123
def test_runtime_binding__not_callable(self):
injector = Injector()
self.assertRaisesRegexp(
InjectorException,
'Cannot create a runtime binding, the key is not callable, key=123',
injector.get_instance, 123)
def test_provider_binding__should_call_provider_for_each_injection(self):
injector = Injector(
lambda binder: binder.bind_to_provider(int, random))
instance0 = injector.get_instance(int)
instance1 = injector.get_instance(int)
assert instance0 != instance1
def test_provider_binding__should_call_provider_for_each_injection(self):
injector = Injector(lambda binder: binder.bind_to_provider(int, random))
instance0 = injector.get_instance(int)
instance1 = injector.get_instance(int)
assert instance0 != instance1
def test_constructor_binding__should_construct_singleton(self):
injector = Injector(lambda binder: binder.bind_to_constructor(int, random))
instance0 = injector.get_instance(int)
instance1 = injector.get_instance(int)
assert instance0 == instance1
def test_instance_binding__should_use_the_same_instance(self):
injector = Injector(lambda binder: binder.bind(int, 123))
instance = injector.get_instance(int)
assert instance == 123
def test_runtime_binding__disabled(self):
injector = Injector(bind_in_runtime=False)
self.assertRaisesRegex(InjectorException,
"No binding was found for key=<.* 'int'>",
injector.get_instance, int)
def setUp(self):
self.injector = Injector()
self.injector.register()
