def test_when_linked_list_is_not_empty(self):
e1 = s.Node(1)
e2 = s.Node(2)
e3 = s.Node(3)
ll = s.LinkedList(e1)
ll.insert(e2)
ll.insert(e3)
self.assertEqual(ll.display(), "1 2 3")
def test_when_both_lists_have_the_same_digits(self):
n1d1 = s.Node(9)
n1d2 = s.Node(2)
n1d3 = s.Node(3)
n2d1 = s.Node(2)
n2d2 = s.Node(3)
n2d3 = s.Node(4)
n1 = s.LinkedList(n1d1)
n1.insert(n1d2)
n1.insert(n1d3)
n2 = s.LinkedList(n2d1)
n2.insert(n2d2)
n2.insert(n2d3)
output = s.sum_list(n1, n2)
self.assertEqual(output.display(), "1 6 7")
def test_when_ll_is_not_empty(self):
e1 = s.Node(1)
e2 = s.Node(2)
e3 = s.Node(3)
ll = s.LinkedList(e1)
ll.insert(e2)
ll.insert(e3)
self.assertEqual(ll.head.value, 1)
self.assertEqual(ll.head.next.value, 2)
self.assertEqual(ll.head.next.next.value, 3)
def test_when_lists_have_diff_num_of_digits(self):
n1d1 = s.Node(9)
n1d2 = s.Node(5)
n1d3 = s.Node(3)
n1d4 = s.Node(2)
n1d5 = s.Node(1)
n2d1 = s.Node(7)
n2d2 = s.Node(5)
n1 = s.LinkedList(n1d1)
n1.insert(n1d2)
n1.insert(n1d3)
n1.insert(n1d4)
n1.insert(n1d5)
n2 = s.LinkedList(n2d1)
n2.insert(n2d2)
output = s.sum_list(n1, n2)
self.assertEqual(output.display(), "6 1 4 2 1")
def test_when_one_or_more_args_have_incorrect_data_type(self):
n1d1 = s.Node(1)
n1 = s.LinkedList(n1d1)
with self.assertRaises(TypeError):
s.sum_list(n1, 1)
def test_when_the_data_type_of_arg_is_incorrect(self):
ll = s.LinkedList()
with self.assertRaises(TypeError):
ll.insert(1)
def test_when_head_is_empty(self):
ll = s.LinkedList()
self.assertEqual(ll.display(), "")
def test_when_ll_is_empty(self):
e1 = s.Node(1)
ll = s.LinkedList()
ll.insert(e1)
self.assertEqual(ll.head.value, 1)