From 1520533d110efae320801bde33770ac9fc1fee8a Mon Sep 17 00:00:00 2001
From: Oleksii Trekhleb <trehleb@gmail.com>
Date: Fri, 12 Apr 2019 09:02:03 +0300
Subject: [PATCH] Fix issue #315.

---
 .../priority-queue/__test__/PriorityQueue.test.js         | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/data-structures/priority-queue/__test__/PriorityQueue.test.js b/src/data-structures/priority-queue/__test__/PriorityQueue.test.js
index e593965cc..2ffe4acb7 100644
--- a/src/data-structures/priority-queue/__test__/PriorityQueue.test.js
+++ b/src/data-structures/priority-queue/__test__/PriorityQueue.test.js
@@ -51,7 +51,7 @@ describe('PriorityQueue', () => {
     expect(priorityQueue.poll()).toBe(5);
   });
 
-  it('should be possible to change priority of internal nodes', () => {
+  it('should be possible to change priority of head node', () => {
     const priorityQueue = new PriorityQueue();
 
     priorityQueue.add(10, 1);
@@ -59,6 +59,8 @@ describe('PriorityQueue', () => {
     priorityQueue.add(100, 0);
     priorityQueue.add(200, 0);
 
+    expect(priorityQueue.peek()).toBe(100);
+
     priorityQueue.changePriority(100, 10);
     priorityQueue.changePriority(10, 20);
 
@@ -68,7 +70,7 @@ describe('PriorityQueue', () => {
     expect(priorityQueue.poll()).toBe(10);
   });
 
-  it('should be possible to change priority of head node', () => {
+  it('should be possible to change priority of internal nodes', () => {
     const priorityQueue = new PriorityQueue();
 
     priorityQueue.add(10, 1);
@@ -76,6 +78,8 @@ describe('PriorityQueue', () => {
     priorityQueue.add(100, 0);
     priorityQueue.add(200, 0);
 
+    expect(priorityQueue.peek()).toBe(100);
+
     priorityQueue.changePriority(200, 10);
     priorityQueue.changePriority(10, 20);