From d3e5603314631ed9908b3a2aefa2d7e34fed1e10 Mon Sep 17 00:00:00 2001
From: ZYSzys <17367077526@163.com>
Date: Fri, 7 Sep 2018 10:47:15 +0800
Subject: [PATCH] test: test undefined in util

---
 test/parallel/test-util.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/parallel/test-util.js b/test/parallel/test-util.js
index 337cb789f73656..2f91417d106148 100644
--- a/test/parallel/test-util.js
+++ b/test/parallel/test-util.js
@@ -113,14 +113,17 @@ assert.strictEqual(util.isBoolean(false), true);
 assert.strictEqual(util.isBoolean('string'), false);
 
 assert.strictEqual(util.isNull(null), true);
+assert.strictEqual(util.isNull(undefined), false);
 assert.strictEqual(util.isNull(), false);
 assert.strictEqual(util.isNull('string'), false);
 
+assert.strictEqual(util.isUndefined(undefined), true);
 assert.strictEqual(util.isUndefined(), true);
 assert.strictEqual(util.isUndefined(null), false);
 assert.strictEqual(util.isUndefined('string'), false);
 
 assert.strictEqual(util.isNullOrUndefined(null), true);
+assert.strictEqual(util.isNullOrUndefined(undefined), true);
 assert.strictEqual(util.isNullOrUndefined(), true);
 assert.strictEqual(util.isNullOrUndefined('string'), false);