73 lines
1.5 KiB
JavaScript
73 lines
1.5 KiB
JavaScript
'use strict';
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var test = require('tape');
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var hasSymbols = require('has-symbols/shams')();
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var hasPropertyDescriptors = require('has-property-descriptors')();
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var ownKeys = require('../');
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/** @type {(a: PropertyKey, b: PropertyKey) => number} */
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function comparator(a, b) {
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if (typeof a === 'string' && typeof b === 'string') {
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return a.localeCompare(b);
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}
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if (typeof a === 'number' && typeof b === 'number') {
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return a - b;
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}
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return typeof a === 'symbol' ? 1 : -1;
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}
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test('ownKeys', function (t) {
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t.equal(typeof ownKeys, 'function', 'is a function');
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t.equal(
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ownKeys.length,
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1,
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'has a length of 1'
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);
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t.test('basics', function (st) {
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var obj = { a: 1, b: 2 };
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if (hasPropertyDescriptors) {
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Object.defineProperty(obj, 'c', {
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configurable: true,
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enumerable: false,
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writable: true,
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value: 3
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});
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}
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st.deepEqual(
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ownKeys(obj).sort(comparator),
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(hasPropertyDescriptors ? ['a', 'b', 'c'] : ['a', 'b']).sort(comparator),
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'includes non-enumerable properties'
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);
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st.end();
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});
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t.test('symbols', { skip: !hasSymbols }, function (st) {
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/** @type {Record<PropertyKey, unknown>} */
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var obj = { a: 1 };
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var sym = Symbol('b');
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obj[sym] = 2;
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var nonEnumSym = Symbol('c');
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Object.defineProperty(obj, nonEnumSym, {
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configurable: true,
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enumerable: false,
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writable: true,
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value: 3
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});
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st.deepEqual(
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ownKeys(obj).sort(comparator),
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['a', sym, nonEnumSym].sort(comparator),
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'works with symbols, both enum and non-enum'
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);
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st.end();
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});
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t.end();
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});
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