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https://github.com/ets-labs/python-dependency-injector.git
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71 lines
2.2 KiB
Python
71 lines
2.2 KiB
Python
"""Dependency injector utils unittests."""
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import unittest2 as unittest
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from dependency_injector import utils
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from dependency_injector import providers
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from dependency_injector import errors
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class IsProviderTests(unittest.TestCase):
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"""`is_provider()` test cases."""
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def test_with_instance(self):
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"""Test with instance."""
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self.assertTrue(utils.is_provider(providers.Provider()))
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def test_with_class(self):
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"""Test with class."""
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self.assertFalse(utils.is_provider(providers.Provider))
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def test_with_string(self):
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"""Test with string."""
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self.assertFalse(utils.is_provider('some_string'))
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def test_with_object(self):
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"""Test with object."""
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self.assertFalse(utils.is_provider(object()))
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def test_with_subclass_instance(self):
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"""Test with subclass of provider instance."""
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class SomeProvider(providers.Provider):
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"""Some provider for test."""
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self.assertTrue(utils.is_provider(SomeProvider()))
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def test_with_class_with_getattr(self):
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"""Test with class that has __getattr__() method implementation."""
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class SomeClass(object):
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"""Some test class with __getattr__() method implementation."""
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def __getattr__(self, _):
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"""Test implementation that just returns False."""
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return False
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self.assertFalse(utils.is_provider(SomeClass()))
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class EnsureIsProviderTests(unittest.TestCase):
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"""`ensure_is_provider` test cases."""
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def test_with_instance(self):
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"""Test with instance."""
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provider = providers.Provider()
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self.assertIs(utils.ensure_is_provider(provider), provider)
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def test_with_class(self):
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"""Test with class."""
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self.assertRaises(errors.Error,
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utils.ensure_is_provider,
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providers.Provider)
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def test_with_string(self):
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"""Test with string."""
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self.assertRaises(errors.Error,
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utils.ensure_is_provider,
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'some_string')
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def test_with_object(self):
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"""Test with object."""
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self.assertRaises(errors.Error, utils.ensure_is_provider, object())
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