140 lines
4.2 KiB
Plaintext
140 lines
4.2 KiB
Plaintext
'use strict';
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var defineProperties = require('define-properties');
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var test = require('tape');
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var callBind = require('call-bind');
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var functionsHaveNames = require('functions-have-names')();
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var hasStrictMode = require('has-strict-mode')();
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var forEach = require('for-each');
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var debug = require('object-inspect');
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var v = require('es-value-fixtures');
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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 index = require('../Iterator.prototype.every');
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var impl = require('../Iterator.prototype.every/implementation');
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var fnName = 'every';
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var isEnumerable = Object.prototype.propertyIsEnumerable;
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var testIterator = require('./helpers/testIterator');
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module.exports = {
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tests: function (every, name, t) {
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t['throws'](
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function () { return new every(); }, // eslint-disable-line new-cap
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TypeError,
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'`' + name + '` is not a constructor'
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);
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forEach(v.primitives.concat(v.objects), function (nonIterator) {
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t['throws'](
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function () { every(nonIterator); },
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TypeError,
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debug(nonIterator) + ' is not an Object with a callable `next` method'
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);
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var badNext = { next: nonIterator };
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t['throws'](
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function () { every(badNext); },
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TypeError,
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debug(badNext) + ' is not an Object with a callable `next` method'
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);
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});
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forEach(v.nonFunctions, function (nonFunction) {
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t['throws'](
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function () { every({ next: function () {} }, nonFunction); },
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TypeError,
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debug(nonFunction) + ' is not a function'
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);
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});
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t.test('observable lookups', { skip: !hasPropertyDescriptors }, function (st) {
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var effects = [];
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var obj = {};
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Object.defineProperty(obj, 'next', {
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configurable: true,
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enumerable: true,
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get: function next() {
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effects.push('get next');
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return function () {
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return { done: true, value: undefined };
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};
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}
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});
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st['throws'](
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function () { every(obj, null); },
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TypeError
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);
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st.deepEqual(effects, []);
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st.end();
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});
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t.test('actual iteration', { skip: !hasSymbols }, function (st) {
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var arr = [1, 2, 3];
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var iterator = callBind(arr[Symbol.iterator], arr);
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st['throws'](
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function () { return new every(iterator()); }, // eslint-disable-line new-cap
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TypeError,
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'`' + name + '` iterator is not a constructor'
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);
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st['throws'](
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function () { return new every(iterator(), function () {}); }, // eslint-disable-line new-cap
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TypeError,
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'`' + name + '` iterator is not a constructor'
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);
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testIterator(iterator(), [1, 2, 3], st, 'original');
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st.equal(every(iterator(), function () { return false; }), false, 'every for always-false');
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st.equal(every(iterator(), function () { return true; }), true, 'every for always-true');
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st.equal(every(iterator(), function (x, i) { return x === 2 && i === 1; }), false, 'every returns false for matching value/index');
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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.prototype.' + fnName + ': index', function (t) {
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module.exports.tests(index, 'Iterator.prototype.' + fnName, 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.prototype.' + fnName + ': implementation', function (t) {
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module.exports.tests(callBind(impl), 'Iterator.prototype.' + fnName, 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.prototype.' + fnName + ': shimmed', function (t) {
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t.test('Function name', { skip: !functionsHaveNames }, function (st) {
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st.equal(Iterator.prototype[fnName].name, fnName, 'Iterator#' + fnName + ' has name "' + fnName + '"');
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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(Iterator.prototype, fnName), 'Iterator#' + fnName + ' is not enumerable');
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et.end();
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});
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t.test('bad string/this value', { skip: !hasStrictMode }, function (st) {
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st['throws'](function () { return Iterator.prototype[fnName].call(undefined, 'a'); }, TypeError, 'undefined is not an object');
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st['throws'](function () { return Iterator.prototype[fnName].call(null, 'a'); }, TypeError, 'null is not an object');
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st.end();
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});
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module.exports.tests(callBind(Iterator.prototype[fnName]), 'Iterator.prototype.' + fnName, t);
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t.end();
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});
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}
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};
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