57 lines
1.3 KiB
JavaScript
57 lines
1.3 KiB
JavaScript
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'use strict';
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var $defineProperty = require('../');
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var test = require('tape');
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var gOPD = require('gopd');
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test('defineProperty: supported', { skip: !$defineProperty }, function (t) {
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t.plan(4);
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t.equal(typeof $defineProperty, 'function', 'defineProperty is supported');
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if ($defineProperty && gOPD) { // this `if` check is just to shut TS up
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/** @type {{ a: number, b?: number, c?: number }} */
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var o = { a: 1 };
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$defineProperty(o, 'b', { enumerable: true, value: 2 });
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t.deepEqual(
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gOPD(o, 'b'),
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{
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configurable: false,
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enumerable: true,
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value: 2,
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writable: false
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},
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'property descriptor is as expected'
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);
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$defineProperty(o, 'c', { enumerable: false, value: 3, writable: true });
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t.deepEqual(
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gOPD(o, 'c'),
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{
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configurable: false,
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enumerable: false,
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value: 3,
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writable: true
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},
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'property descriptor is as expected'
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);
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}
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t.equal($defineProperty, Object.defineProperty, 'defineProperty is Object.defineProperty');
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t.end();
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});
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test('defineProperty: not supported', { skip: !!$defineProperty }, function (t) {
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t.notOk($defineProperty, 'defineProperty is not supported');
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t.match(
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typeof $defineProperty,
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/^(?:undefined|boolean)$/,
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'`typeof defineProperty` is `undefined` or `boolean`'
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);
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t.end();
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});
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