def test_delete(self):
"""
Tests that the Node reference pointer has been
deleted.
"""
node = Node(1)
node.insert_after(2)
self.assertEqual(node.next.value, 2)
node.delete()
self.assertEqual(node.next, None)
def test_insert_after(self):
"""
Tests that a new Node with the inputted value
has been inserted after this one.
"""
node = Node("testing1")
node.insert_after("testing2")
self.assertEqual(node.next.value, "testing2")
node.insert_after("testing3")
self.assertEqual(node.next.value, "testing3")
self.assertEqual(node.next.next.value, "testing2")