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37 lines
1.0 KiB
37 lines
1.0 KiB
2 years ago
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'use strict';
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var hasSymbols = require('has-symbols')();
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module.exports = function runTests(hasOwn, t) {
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var badPropertyKey = { toString: function () { throw new SyntaxError('nope'); } };
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t['throws'](
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function () { hasOwn(null, badPropertyKey); },
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TypeError,
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'checks ToObject first'
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);
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t['throws'](
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function () { hasOwn({}, badPropertyKey); },
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SyntaxError,
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'checks ToPropertyKey next'
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);
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var obj = { a: 1 };
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t.equal('toString' in obj, true, 'object literal has non-own toString');
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t.equal(hasOwn(obj, 'toString'), false, 'toString is not an own property');
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t.equal(hasOwn(obj, 'a'), true, 'own property is recognized');
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t.equal(hasOwn([], 'length'), true, 'non-enumerable own property is recognized');
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t.test('Symbols', { skip: !hasSymbols }, function (st) {
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var o = {};
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o[Symbol.iterator] = true;
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st.equal(hasOwn(o, Symbol.iterator), true, 'own symbol is recognized');
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st.equal(hasOwn(Array.prototype, Symbol.iterator), true, 'built-in own symbol is recognized');
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st.end();
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});
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};
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