def test_input_raises_value_error_if_wrong_len_of_data(self):
self.input_data.pop(0)
with self.assertRaises(ValueError) as e:
Knapsack.process_input_data(self.input_data)
self.assertTrue(
Knapsack._DATA_LENGTH_ERROR.format(len(self.input_data))
in str(e.exception))
def test_input_raises_value_error_if_wrong_input_type(self):
self.input_data[1] = '3 4 5 A'
with self.assertRaises(ValueError) as e:
Knapsack.process_input_data(self.input_data)
self.assertTrue('invalid literal' in str(e.exception))
def test_input_raises_value_error_if_wrong_input(self):
self.input_data[2] = '3 4 5'
with self.assertRaises(ValueError) as e:
Knapsack.process_input_data(self.input_data)
self.assertTrue(Knapsack._DATA_INPUT_ERROR in str(e.exception))
def test_input_processes_and_returns_list_succeeds(self):
res = Knapsack.process_input_data(self.input_data)
self.assertEqual(res, [7, [2, 3, 4, 5], [3, 4, 5, 5]])