From 6a5ed26bd226d1f9510bfa8382212b20d87c15c9 Mon Sep 17 00:00:00 2001
From: Oleksii Trekhleb <trehleb@gmail.com>
Date: Thu, 5 Jul 2018 15:28:11 +0300
Subject: [PATCH] Extend DoublyLinkedListNode tests.

---
 .../doubly-linked-list/__test__/DoublyLinkedListNode.test.js     | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/data-structures/doubly-linked-list/__test__/DoublyLinkedListNode.test.js b/src/data-structures/doubly-linked-list/__test__/DoublyLinkedListNode.test.js
index 0da8c8ce..f7f140d8 100644
--- a/src/data-structures/doubly-linked-list/__test__/DoublyLinkedListNode.test.js
+++ b/src/data-structures/doubly-linked-list/__test__/DoublyLinkedListNode.test.js
@@ -6,6 +6,7 @@ describe('DoublyLinkedListNode', () => {
 
     expect(node.value).toBe(1);
     expect(node.next).toBeNull();
+    expect(node.previous).toBeNull();
   });
 
   it('should create list node with object as a value', () => {