96 lines
2.4 KiB
JavaScript
96 lines
2.4 KiB
JavaScript
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'use strict';
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var defineProperties = require('define-properties');
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var test = require('tape');
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var functionsHaveNames = require('functions-have-names')();
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var index = require('../Iterator');
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var impl = require('../Iterator/implementation');
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var isEnumerable = Object.prototype.propertyIsEnumerable;
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module.exports = {
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tests: function (Iter, name, t) {
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t.equal(typeof Iter, 'function', name + ' is a function');
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t['throws'](
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function () { Iter(); }, // eslint-disable-line new-cap
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TypeError,
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name + ' throws when Call-ed'
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);
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t['throws'](
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function () { return new Iter(); },
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TypeError,
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name + ' throws when Construct-ed'
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);
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var SubIter;
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var SubSubIter;
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try {
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/* eslint no-new-func: 0 */
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SubIter = Function('Iter', 'return class SubIter extends Iter {};')(Iter);
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SubSubIter = Function('SubIter', 'return class SubSubIter extends SubIter {};')(SubIter);
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} catch (e) { /**/ }
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t.test('class inheritance', { skip: !SubIter }, function (st) {
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st.doesNotThrow(
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function () { return new SubIter(); },
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'Extending ' + name + ' does not throw when Construct-ed'
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);
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st.doesNotThrow(
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function () { return new SubSubIter(); },
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'Extending ' + name + ' twice does not throw when Construct-ed'
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);
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st.end();
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});
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},
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index: function () {
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test('Iterator: index', function (t) {
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module.exports.tests(index, 'Iterator', t);
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t.end();
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});
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},
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implementation: function () {
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test('Iterator: implementation', function (t) {
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module.exports.tests(impl, 'Iterator', t);
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t.end();
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});
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},
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shimmed: function () {
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test('Iterator: shimmed', function (t) {
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t.test('Function name', { skip: !functionsHaveNames }, function (st) {
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st.equal(Iterator.name, 'Iterator', 'Iterator has name "Iterator"');
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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(global, Iterator), 'Iterator is not enumerable');
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et.end();
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});
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t.test('prototype descriptor', { skip: !defineProperties.supportsDescriptors }, function (pt) {
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var desc = Object.getOwnPropertyDescriptor(Iterator, 'prototype');
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pt.deepEqual(
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desc,
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{
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configurable: false,
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enumerable: false,
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value: Iterator.prototype,
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writable: false
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}
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);
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pt.end();
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});
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module.exports.tests(Iterator, 'Iterator', t);
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t.end();
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});
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}
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};
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