def test_shift(self):
"""Test delete element in the top of the list"""
shift_test_list = DoubleLinkedList()
shift_test_list.push(15)
shift_test_list.push(154)
shift_test_list.push(1435)
shift_test_list.shift()
self.assertEqual(shift_test_list.get_list()[0].get_elem(), 154)
def test_un_shift(self):
"""Test add element in the top of the list"""
l_list = DoubleLinkedList()
l_list.push(15)
l_list.push(150)
l_list.push(1)
l_list.un_shift(111)
self.assertEqual(l_list.get_list()[0].get_elem(), 111)
def test_delete(self):
"""Test method which delete element from list"""
delete_test_list = DoubleLinkedList()
delete_test_list.push(12)
delete_test_list.push(123)
delete_test_list.push(1234)
delete_test_list.push(12345)
delete_test_list.delete(123)
self.assertEqual(delete_test_list.get_list()[1].get_elem(), 1234)
def test_push(self):
"""Test pushing elements in the end"""
push_test_list = DoubleLinkedList()
push_test_list.push(12)
self.assertEqual(push_test_list.get_list()[0].get_elem(), 12)
def test_un_shift_when_empty(self):
"""Test add element in the top of the list, when list is empty"""
l_list = DoubleLinkedList()
l_list.un_shift(111)
self.assertEqual(l_list.get_list()[0].get_elem(), 111)
def test_last(self):
"""Test return last Item in list"""
l_list = DoubleLinkedList()
l_list.push(1234)
l_list.push(12)
self.assertEqual(l_list.get_list()[-1], l_list.last())