def setUp(self):
self.dependencies = Dependencies()
def setUp(self):
self.dependencies = Dependencies()
class DependenciesTest(unittest.TestCase):
def setUp(self):
self.dependencies = Dependencies()
def test_can_add_things(self):
self.dependencies.register_value('my value', 123)
self.dependencies.register_factory('my factory', lambda: 1)
def test_accepts_dependency_lists(self):
self.dependencies.register_factory(
'my factory', lambda: 1, dependencies=['my value']
)
def test_requires_names(self):
with self.assertRaises(BadNameException):
self.dependencies.register_value(None, 123)
with self.assertRaises(BadNameException):
self.dependencies.register_value(123, 123)
with self.assertRaises(BadNameException):
self.dependencies.register_value(object(), 123)
def test_disallows_duplicate_names(self):
self.dependencies.register_value('x', 1)
with self.assertRaises(DuplicateNameException):
self.dependencies.register_factory('x', lambda: 2)
def test_builds_injector(self):
self.dependencies.register_value('x1', 1)
inj = self.dependencies.build_injector()
self.assertEqual(inj.get_dependency('x1'), 1)
def test_catches_missing_dependency(self):
self.dependencies.register_factory('f1', lambda f2: 1, dependencies=['f2'])
with self.assertRaises(MissingDependencyException):
self.dependencies.build_injector()
def test_catches_circular_dependency(self):
self.dependencies.register_factory('f1', lambda f2: 1, dependencies=['f2'])
self.dependencies.register_factory('f2', lambda f3: 2, dependencies=['f3'])
self.dependencies.register_factory('f3', lambda f1: 3, dependencies=['f1'])
with self.assertRaises(CircularDependencyException):
self.dependencies.build_injector()
class DependenciesTest(unittest.TestCase):
def setUp(self):
self.dependencies = Dependencies()
def test_can_add_things(self):
self.dependencies.register_value('my value', 123)
self.dependencies.register_factory('my factory', lambda: 1)
def test_accepts_dependency_lists(self):
self.dependencies.register_factory('my factory',
lambda: 1,
dependencies=['my value'])
def test_requires_names(self):
with self.assertRaises(BadNameException):
self.dependencies.register_value(None, 123)
with self.assertRaises(BadNameException):
self.dependencies.register_value(123, 123)
with self.assertRaises(BadNameException):
self.dependencies.register_value(object(), 123)
def test_disallows_duplicate_names(self):
self.dependencies.register_value('x', 1)
with self.assertRaises(DuplicateNameException):
self.dependencies.register_factory('x', lambda: 2)
def test_builds_injector(self):
self.dependencies.register_value('x1', 1)
inj = self.dependencies.build_injector()
self.assertEqual(inj.get_dependency('x1'), 1)
def test_catches_missing_dependency(self):
self.dependencies.register_factory('f1',
lambda f2: 1,
dependencies=['f2'])
with self.assertRaises(MissingDependencyException):
self.dependencies.build_injector()
def test_catches_circular_dependency(self):
self.dependencies.register_factory('f1',
lambda f2: 1,
dependencies=['f2'])
self.dependencies.register_factory('f2',
lambda f3: 2,
dependencies=['f3'])
self.dependencies.register_factory('f3',
lambda f1: 3,
dependencies=['f1'])
with self.assertRaises(CircularDependencyException):
self.dependencies.build_injector()