40 lines
1.4 KiB
JavaScript
40 lines
1.4 KiB
JavaScript
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'use strict';
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var orig = Array.prototype.includes;
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require('../auto');
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var test = require('tape');
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var defineProperties = require('define-properties');
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var callBind = require('call-bind');
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var isEnumerable = Object.prototype.propertyIsEnumerable;
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var functionsHaveNames = require('functions-have-names')();
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var runTests = require('./tests');
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test('shimmed', function (t) {
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t.comment('shimmed: ' + (orig === Array.prototype.includes ? 'no' : 'yes'));
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t.equal(Array.prototype.includes.length, 1, 'Array#includes has a length of 1');
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t.test('Function name', { skip: !functionsHaveNames }, function (st) {
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st.equal(Array.prototype.includes.name, 'includes', 'Array#includes has name "includes"');
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st.end();
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});
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t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
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et.equal(false, isEnumerable.call(Array.prototype, 'includes'), 'Array#includes is not enumerable');
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et.end();
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});
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var supportsStrictMode = (function () { return typeof this === 'undefined'; }());
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t.test('bad array/this value', { skip: !supportsStrictMode }, function (st) {
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st['throws'](function () { return Array.prototype.includes.call(undefined, 'a'); }, TypeError, 'undefined is not an object');
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st['throws'](function () { return Array.prototype.includes.call(null, 'a'); }, TypeError, 'null is not an object');
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st.end();
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});
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runTests(callBind(Array.prototype.includes), t);
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t.end();
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});
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