def testEnvironment_set_params(self):
# Make instant with params and args.
env = Environment(params=['KEY_1', 'KEY_2'], args=['VAL_1', 'VAL_2'])
# `find` method must return self and we can get values for keys.
self.assertEqual(env.find('KEY_1')['KEY_1'], 'VAL_1')
self.assertEqual(env.find('KEY_2')['KEY_2'], 'VAL_2')
def testEnvironment_extend(self):
env = Environment()
# A environment that have itself as an outer environment.
extended_env = env.extend()
# An outer environment must be itself.
self.assertTrue(extended_env.outer is env)
def testEnvironment_find_value(self):
env = Environment()
# Add key-value pair for testing `find` method.
env['KEY'] = 'VAL'
# `find` method must return self and we can get value for key.
self.assertEqual(env.find('KEY')['KEY'], 'VAL')
def testEnvironment_find(self):
env = Environment()
# Add key-value pair for testing `find` method.
env['KEY'] = 'VAL'
# `find` method must return self.
self.assertEqual(env.find('KEY'), env)
def testEnvironment_find_outer_value(self):
# Set outer environment.
outer = Environment()
env = Environment(outer=outer)
# Add key-value pari to outer environment.
env.outer['OUTER_KEY'] = 'OUTER_VAL'
# `find` method must retrun outer environment and we can get outer value for outer key.
self.assertEqual(env.find('OUTER_KEY')['OUTER_KEY'], 'OUTER_VAL')
def testEnvironment_find_outer(self):
# Set outer environment.
outer = Environment()
env = Environment(outer=outer)
# Add key-value pari to outer environment.
env.outer['OUTER_KEY'] = ['OUTER_VAL']
# `find` method must retrun outer environment.
self.assertEqual(env.find('OUTER_KEY'), outer)
def testEnvironment_find_raise_exception(self):
env = Environment()
# Raise exception if key-value pair does not exist.
self.assertRaises(LookupError, env.find, 'KEY')
def testEnvironment(self):
env = Environment()
# Check instance.
self.assertIsInstance(env, Environment)