def test_initial_value_values_are_retrieved(self):
expected_dict = {"one": 1, "two": 2, "three": 3, "four": 4}
sut = PersistentDict(self.storage_path, initial_dict=expected_dict)
actual_values_set = set()
for value in sut.values():
actual_values_set.add(value)
self.assertSetEqual(set(expected_dict.values()), actual_values_set)
def test_initial_value_is_retrieved(self):
expected_dict = {"one": 1, "two": 2, "three": 3, "four": 4}
sut = PersistentDict(self.storage_path, initial_dict=expected_dict)
actual_dict = {}
for key, value in sut.items():
actual_dict[key] = value
self.assertDictEqual(expected_dict, actual_dict)
def test_remove_item(self):
initial_dict = {"one": 1, "two": 2, "three": 3, "four": 4}
item_to_remove = "three"
expected_dict = {"one": 1, "two": 2, "four": 4}
sut = PersistentDict(self.storage_path, initial_dict=initial_dict)
sut.pop(item_to_remove)
actual_values_set = set()
for value in sut.values():
actual_values_set.add(value)
self.assertSetEqual(set(expected_dict.values()), actual_values_set)
def test_get_item(self):
expected_item = "expected item"
key = "new key"
sut = PersistentDict(self.storage_path)
sut[key] = expected_item
self.assertEqual(expected_item, sut[key])
def test_initial_value_keys_are_retrieved_directly(self):
expected_dict = {"one": 1, "two": 2, "three": 3, "four": 4}
sut = PersistentDict(self.storage_path, initial_dict=expected_dict)
actual_keys_set = set()
for key in sut:
actual_keys_set.add(key)
self.assertSetEqual(set(expected_dict.keys()), actual_keys_set)
def test_set_item(self):
sut = PersistentDict(self.storage_path)
sut["new_key"] = "new item"
def test_initial_value_is_not_a_dict_raise(self):
self.assertRaises(TypeError,
lambda: PersistentDict(self.storage_path, int()))
def test_create(self):
sut = PersistentDict(self.storage_path)
self.assertIsInstance(sut, PersistentDict)