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| 'use strict';
|
| var test = require('tape');
|
| var hasPropertyDescriptors = require('../');
|
| var sentinel = {};
|
| test('hasPropertyDescriptors', function (t) {
| t.equal(typeof hasPropertyDescriptors, 'function', 'is a function');
| t.equal(typeof hasPropertyDescriptors.hasArrayLengthDefineBug, 'function', '`hasArrayLengthDefineBug` property is a function');
|
| var yes = hasPropertyDescriptors();
| t.test('property descriptors', { skip: !yes }, function (st) {
| var o = { a: sentinel };
|
| st.deepEqual(
| Object.getOwnPropertyDescriptor(o, 'a'),
| {
| configurable: true,
| enumerable: true,
| value: sentinel,
| writable: true
| },
| 'has expected property descriptor'
| );
|
| Object.defineProperty(o, 'a', { enumerable: false, writable: false });
|
| st.deepEqual(
| Object.getOwnPropertyDescriptor(o, 'a'),
| {
| configurable: true,
| enumerable: false,
| value: sentinel,
| writable: false
| },
| 'has expected property descriptor after [[Define]]'
| );
|
| st.end();
| });
|
| var arrayBug = hasPropertyDescriptors.hasArrayLengthDefineBug();
| t.test('defining array lengths', { skip: !yes || arrayBug }, function (st) {
| var arr = [1, , 3]; // eslint-disable-line no-sparse-arrays
| st.equal(arr.length, 3, 'array starts with length 3');
|
| Object.defineProperty(arr, 'length', { value: 5 });
|
| st.equal(arr.length, 5, 'array ends with length 5');
|
| st.end();
| });
|
| t.end();
| });
|
|
