test: test undefined in util

PR-URL: nodejs#22741 Reviewed-By: Gus Caplan <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: Michael Dawson <[email protected]> Reviewed-By: Sakthipriyan Vairamani <[email protected]>
linvinglor · Sep 27, 2018 · a00eee3 · a00eee3
1 parent 709b3b1
commit a00eee3
Showing 1 changed file with 3 additions and 0 deletions.
diff --git 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);