/home/techb158/balavpn.abdallabala.com/node_modules/es-iterator-helpers/test
Edit: /home/techb158/balavpn.abdallabala.com/node_modules/es-iterator-helpers/test/Iterator.js (4618B)
'use strict';
var defineProperties = require('define-properties');
var test = require('tape');
var functionsHaveNames = require('functions-have-names')();
var mockProperty = require('mock-property');
var hasProto = require('has-proto')();
var requireStash = require('require-stash');
var index = require('../Iterator');
var impl = require('../Iterator/implementation');
var isEnumerable = Object.prototype.propertyIsEnumerable;
module.exports = {
tests: function (Iter, name, t) {
t.equal(typeof Iter, 'function', name + ' is a function');
t['throws'](
function () { Iter(); }, // eslint-disable-line new-cap
TypeError,
name + ' throws when Call-ed'
);
t['throws'](
function () { return new Iter(); },
TypeError,
name + ' throws when Construct-ed'
);
var SubIter;
var SubSubIter;
try {
/* eslint no-new-func: 0 */
SubIter = Function('Iter', 'return class SubIter extends Iter {};')(Iter);
SubSubIter = Function('SubIter', 'return class SubSubIter extends SubIter {};')(SubIter);
} catch (e) { /**/ }
t.test('class inheritance', { skip: !SubIter }, function (st) {
st.doesNotThrow(
function () { return new SubIter(); },
'Extending ' + name + ' does not throw when Construct-ed'
);
st.doesNotThrow(
function () { return new SubSubIter(); },
'Extending ' + name + ' twice does not throw when Construct-ed'
);
st.end();
});
},
index: function () {
test('Iterator: index', function (t) {
module.exports.tests(index, 'Iterator', t);
t.end();
});
},
implementation: function () {
test('Iterator: implementation', function (t) {
module.exports.tests(impl, 'Iterator', t);
t.end();
});
test('Iterator: implementation polyfill path', { skip: typeof Iterator !== 'function' }, function (t) {
var restore = mockProperty(global, 'Iterator', { 'delete': true });
// evict the module cache so implementation re-evaluates without native Iterator
var restoreImpl = requireStash(__dirname, '../Iterator/implementation');
var polyfillImpl = require('../Iterator/implementation'); // eslint-disable-line global-require
t.equal(typeof polyfillImpl, 'function', 'polyfill is a function');
t['throws'](
function () { polyfillImpl(); },
TypeError,
'polyfill throws when Call-ed (not instanceof)'
);
t['throws'](
function () { return new polyfillImpl(); }, // eslint-disable-line new-cap
TypeError,
'polyfill throws when Construct-ed directly'
);
t.test('polyfill prototype chain check', { skip: !hasProto }, function (st) {
function BadSub() {}
BadSub.prototype = Object.create(polyfillImpl.prototype);
Object.defineProperty(BadSub.prototype, 'constructor', { value: BadSub, configurable: true, writable: true });
// do NOT set Object.setPrototypeOf(BadSub, polyfillImpl)
// so polyfillImpl is NOT in BadSub's [[Prototype]] chain
var instance = new BadSub();
st['throws'](
function () { polyfillImpl.call(instance); },
TypeError,
'polyfill throws when constructor lacks Iterator in its prototype chain'
);
st.end();
});
t.test('polyfill subclass succeeds', { skip: !hasProto }, function (st) {
function GoodSub() { return polyfillImpl.call(this); }
GoodSub.prototype = Object.create(polyfillImpl.prototype);
Object.defineProperty(GoodSub.prototype, 'constructor', { value: GoodSub, configurable: true, writable: true });
Object.setPrototypeOf(GoodSub, polyfillImpl);
st.doesNotThrow(
function () { return new GoodSub(); },
'polyfill does not throw for a proper subclass'
);
st.end();
});
// restore the module cache and native Iterator
restoreImpl();
restore();
t.end();
});
},
shimmed: function () {
test('Iterator: shimmed', function (t) {
t.test('Function name', { skip: !functionsHaveNames }, function (st) {
st.equal(Iterator.name, 'Iterator', 'Iterator has name "Iterator"');
st.end();
});
t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
et.equal(false, isEnumerable.call(global, Iterator), 'Iterator is not enumerable');
et.end();
});
t.test('prototype descriptor', { skip: !defineProperties.supportsDescriptors }, function (pt) {
var desc = Object.getOwnPropertyDescriptor(Iterator, 'prototype');
pt.deepEqual(
desc,
{
configurable: false,
enumerable: false,
value: Iterator.prototype,
writable: false
}
);
pt.end();
});
module.exports.tests(Iterator, 'Iterator', t);
t.end();
});
}
};