def test_overwrite_value(self):
my_dict = Dict()
my_dict['x'] = 1
self.assertIn(("x", 1), my_dict.items())
my_dict['x'] = 2
self.assertIn(("x", 2), my_dict.items())
self.assertNotIn(("x", 1), my_dict.items())
def test_fill_up_storage_multiple_times(self):
my_dict = Dict()
for i in range(my_dict.INITIAL_STORAGE_LENGTH):
my_dict[i] = i
self.assertEqual(my_dict._storage_length,
my_dict.INITIAL_STORAGE_LENGTH)
for i in range(my_dict.INITIAL_STORAGE_LENGTH,
my_dict.INITIAL_STORAGE_LENGTH * 2):
my_dict[i] = i
self.assertEqual(my_dict._storage_length,
my_dict.INITIAL_STORAGE_LENGTH * 2)
for i in range(my_dict.INITIAL_STORAGE_LENGTH * 2,
my_dict.INITIAL_STORAGE_LENGTH * 4):
my_dict[i] = i
self.assertEqual(my_dict._storage_length,
my_dict.INITIAL_STORAGE_LENGTH * 4)
for i in range(my_dict.INITIAL_STORAGE_LENGTH * 4,
my_dict.INITIAL_STORAGE_LENGTH * 8):
my_dict[i] = i
self.assertEqual(my_dict._storage_length,
my_dict.INITIAL_STORAGE_LENGTH * 8)
my_dict['a'] = 1
self.assertEqual(my_dict._storage_length,
my_dict.INITIAL_STORAGE_LENGTH * 16)
def test_create_empty_Dict(self):
my_dict = Dict()
self.assertIsInstance(my_dict, Dict)
self.assertEqual(my_dict._storage_length,
my_dict.INITIAL_STORAGE_LENGTH)
self.assertEqual(my_dict.items(), [])
with self.assertRaises(KeyError):
my_dict["x"]
def test_fill_up_storage(self):
my_dict = Dict()
for i in range(my_dict.INITIAL_STORAGE_LENGTH):
my_dict[i] = i
self.assertEqual(my_dict._storage_length,
my_dict.INITIAL_STORAGE_LENGTH)
my_dict['a'] = 1
self.assertEqual(my_dict._storage_length,
my_dict.INITIAL_STORAGE_LENGTH * 2)
def test_setting_Dict_value(self):
my_dict = Dict()
my_dict['y'] = 2
self.assertIn(("y", 2), my_dict.items())
self.assertEqual(my_dict["y"], 2)
def test_initialize_Dict_with_element(self):
my_dict = Dict(("x", 1))
self.assertEqual(my_dict.items(), [("x", 1)])
self.assertEqual(my_dict["x"], 1)
def test_initialize_Dict_with_multiple_elements(self):
my_dict = Dict(("x", 1), ("y", 2))
self.assertIn(("x", 1), my_dict.items())
self.assertIn(("y", 2), my_dict.items())
def test_init(self):
d = Dict(a = 1, b = 'test')
self.assertEqual(d.a, 1)
self.assertEqual(d.b, 'test')
self.assertTrue(isinstance(d, dict))
def test_attrerror(self):
d = Dict()
with self.assertRaises(AttributeError):
value = d.empty
def test_keyerror(self):
d = Dict()
with self.assertRaises(KeyError):
value = d['empty']
def test_attr(self):
d = Dict()
d.age = 25
self.assertTrue('age' in d)
self.assertEqual(d['age'],25)
def test_key(self):
d = Dict()
d['key'] = 'value'
self.assertEqual(d.key, 'value')