def test_reverse_traversal(self):
node = Node(data=self.data)
self.assertEqual(None, self.linked_list.reverse_traversal())
self.linked_list.initialize(node=node)
self.assertEqual(None, self.linked_list.reverse_traversal())
self.linked_list.insert(2)
self.assertEqual(None, self.linked_list.reverse_traversal())
def test_initialize(self):
node = Node(data=self.data)
self.assertEqual(None, self.linked_list.get_head())
self.assertEqual(None, self.linked_list.get_tail())
self.linked_list.initialize(node=node)
self.assertEqual(node, self.linked_list.get_head())
self.assertEqual(node, self.linked_list.get_tail())
def test_traverse(self):
node = Node(data=self.data)
self.assertEqual("", self.linked_list.traverse())
self.linked_list.initialize(node=node)
self.assertEqual("[{}]".format(self.data), self.linked_list.traverse())
self.linked_list.insert(2)
self.assertEqual("[{}]->[{}]".format(2, self.data),
self.linked_list.traverse())
def test_to_array(self):
node = Node(data=self.data)
self.assertEqual([], self.linked_list.to_array())
self.linked_list.initialize(node=node)
self.assertEqual([1], self.linked_list.to_array())
def test_size(self):
node = Node(data=self.data)
self.assertEqual(0, self.linked_list.size())
self.linked_list.initialize(node=node)
self.assertEqual(1, self.linked_list.size())
def test_making_circular(self):
node = Node(data=self.data)
self.assertFalse(self.linked_list.is_circular())
self.linked_list.initialize(node=node)
self.linked_list.make_circular()
self.assertTrue(self.linked_list.is_circular())
def test_is_empty(self):
node = Node(data=self.data)
self.assertTrue(self.linked_list.is_empty())
self.linked_list.initialize(node=node)
self.assertFalse(self.linked_list.is_empty())
def test_set_tail(self):
node = Node(data=self.data)
self.assertEqual(None, self.linked_list.get_tail())
self.linked_list.set_tail(node=node)
self.assertEqual(node, self.linked_list.get_tail())