def test_dijkstra_several_items_random_order(self):
lst = ['white', 'blue', 'blue', 'red', 'white', 'red', 'white']
expected_end = [
'red', 'red', 'white', 'white', 'white', 'blue', 'blue'
]
dijkstra(lst)
self.assertEqual(expected_end, lst)
def test_dijkstra_red_white_blue(self):
colours_list = ['blue', 'white', 'blue', 'red', 'white']
dijkstra(colours_list)
actual = colours_list
expected = ['red', 'white', 'white', 'blue', 'blue']
self.assertEqual(expected, actual)
def test_dijkstra_not_a_list(self, mock_stdout):
colours_list = [1]
dijkstra(colours_list)
actual = mock_stdout.getvalue()
expected = ""
self.assertEqual(expected, actual)
def test_dijkstra_empty_list(self, mock_stdout):
colours_list = []
dijkstra(colours_list)
actual = mock_stdout.getvalue()
expected = "Error: This is not a valid value!\n"
self.assertEqual(expected, actual)
def test_dijkstra_no_reds(self):
lst = ['white', 'blue', 'white', 'blue']
expected_end = ['white', 'white', 'blue', 'blue']
dijkstra(lst)
self.assertEqual(expected_end, lst)
def test_dijkstra_first_item_is_white(self):
lst = ['white', 'red', 'blue', 'red', 'white']
expected_end = ['red', 'red', 'white', 'white', 'blue']
dijkstra(lst)
self.assertEqual(expected_end, lst)
def test_dijkstra_items_already_in_order(self):
lst = ['red', 'white', 'blue']
expected_end = ['red', 'white', 'blue']
dijkstra(lst)
self.assertEqual(expected_end, lst)
