test: cleanup test-util-inherits.js

Replaced constructor with regular expression for assert.throw(). PR-URL: #12602 Reviewed-By: Santiago Gimeno <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Rich Trott <[email protected]>
nodejs · May 1, 2017 · 3c2f578 · 3c2f578
1 parent 6836785
commit 3c2f578
Showing 1 changed file with 13 additions and 3 deletions.
diff --git a/test/parallel/test-util-inherits.js b/test/parallel/test-util-inherits.js
@@ -3,6 +3,10 @@
 require('../common');
 const assert = require('assert');
 const inherits = require('util').inherits;
+const errCheck =
+  new RegExp('^TypeError: The super constructor to "inherits" must not be ' +
+                      'null or undefined$');
+
 
 // super constructor
 function A() {
@@ -75,6 +79,12 @@ assert.strictEqual(e.e(), 'e');
 assert.strictEqual(e.constructor, E);
 
 // should throw with invalid arguments
-assert.throws(function() { inherits(A, {}); }, TypeError);
-assert.throws(function() { inherits(A, null); }, TypeError);
-assert.throws(function() { inherits(null, A); }, TypeError);
+assert.throws(function() {
+  inherits(A, {});
+}, /^TypeError: The super constructor to "inherits" must have a prototype$/);
+assert.throws(function() {
+  inherits(A, null);
+}, errCheck);
+assert.throws(function() {
+  inherits(null, A);
+}, /^TypeError: The constructor to "inherits" must not be null or undefined$/);