def test_reload(self):
# load initial config
config = SampleConfig(loaders=[EnvLoader()])
self.assertEqual(config.STRING_PROP, 'let\'s see if overrides work')
# set something else in env
os.environ['STRING_PROP'] = 'new value!'
config.reload()
self.assertEqual(config.STRING_PROP, 'new value!')
def test_allow_nones(self):
# test that intentional None value in first priority loader is not overriden
config_dict = {
'STRING_PROP': '1',
'INT_PROP': 3,
'ANY_TYPE_PROP': None
}
os.environ['ANY_TYPE_PROP'] = 'this should not get through'
self.env_keys_set.append('ANY_TYPE_PROP')
config_env_second = SampleConfig(loaders=[DictLoader(config_dict), EnvLoader()])
self.assertIsNone(config_env_second.ANY_TYPE_PROP)
def test_loader_priority(self):
config_dict = {
'STRING_PROP': '1',
'INT_PROP': '2',
'ANY_TYPE_PROP': [1, 2, 3],
'NOT_A_PROPERTY': 'boo'
}
# construct config with env overrides
config_with_env = SampleConfig(loaders=[EnvLoader(), DictLoader(config_dict)])
self.assertEqual(config_with_env.STRING_PROP, 'let\'s see if overrides work')
self.assertEqual(config_with_env.INT_PROP, 2)
self.assertEqual(config_with_env.ONLY_IN_ENV, 'this is only in the env!')
with self.assertRaises(AttributeError):
config_with_env.NOT_A_PROPERTY
def test_env_loader(self):
os.environ['EXISTING_KEY'] = 'hello'
loader = EnvLoader()
# change the env after loader is initialized
os.environ['EXISTING_KEY'] = 'world'
os.environ['NEW_KEY'] = 'brand_new'
self.assertTrue(loader.exists('EXISTING_KEY'))
self.assertTrue(loader.exists('NEW_KEY'))
self.assertFalse(loader.exists('BAD_KEY'))
self.assertEqual(loader.get('EXISTING_KEY'), 'world')
self.assertEqual(loader.get('NEW_KEY'), 'brand_new')