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test: cleanup test-util-inherits.js

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Replaced constructor with regular expression for assert.throw().

PR-URL: https://github.com/nodejs/node/pull/12602
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
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RobotMermaid 2017-04-22 13:22:16 -07:00 committed by Anna Henningsen
parent 78e00631dd
commit 2055fd371f
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1 changed files with 13 additions and 3 deletions
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16
test/parallel/test-util-inherits.js
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@ -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$/);