def __init__(self, storage):
self._storage = storage
self._scheduler = Scheduler()
self.environment = Environment()
self.environment.define(Symbols.SIMULATION, self)
self._next_request_id = 1
self.factory = Factory()
def test_dynamic_scope(self):
env = Environment()
local_env1 = env.create_local_environment()
local_env1.define("var_1", 123)
local_env2 = env.create_local_environment(local_env1)
self.assertIsNone(local_env2.look_up("var_1"))
self.assertEqual(local_env2.dynamic_look_up("var_1"), 123)
def test_look_up_bindings_in_parent(self):
env1 = Environment()
env1.define("my_var", 4)
env2 = env1.create_local_environment()
env3 = env2.create_local_environment()
self.assertEqual(env3.look_up("my_var"), 4)
def test_evaluation_of_lifo(self):
environment = Environment()
queue = LIFO()
Evaluation(environment, queue, Factory()).result
queue = environment.look_up(Symbols.QUEUE).delegate
self.assertIsInstance(queue, LIFOTaskPool)
def test_look_up_masked_bindings(self):
env1 = Environment()
env1.define("my_var", 8)
env2 = env1.create_local_environment()
env2.define("my_var", 7)
env3 = env2.create_local_environment()
env3.define("my_var", 6)
self.assertEqual(env1.look_up("my_var"), 8)
self.assertEqual(env2.look_up("my_var"), 7)
self.assertEqual(env3.look_up("my_var"), 6)
def test_evaluation_of_sequence_stops_at_the_first_failure(self):
environment = Environment()
succeed = MagicMock(Expression)
succeed.accept = MagicMock(return_value=Success())
def check_result(status):
self.assertTrue(status.is_erroneous)
Evaluation(environment,
Sequence(Fail(), succeed),
Factory(),
continuation=check_result).result
succeed.accept.assert_not_called()
def test_evaluation_of_fail(self):
environment = Environment()
result = Evaluation(environment, Fail(), Factory()).result
self.assertTrue(result.is_erroneous)
def test_look_up_a_missing_binding(self):
env1 = Environment()
env1.define("var1", 5)
self.assertIsNone(env1.look_up("missing_symbol"))
def test_define_all_reject_missing_values(self):
env = Environment()
with self.assertRaises(ValueError):
env.define_each(["a", "b", "c"], [1, 2])
def test_define_all_symbols(self):
env = Environment()
env.define_each(["a", "b", "c"], [1, 2, 3])
self.verify_all_bindings(env, {"a": 1, "b": 2, "c": 3})