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shimmed.js
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shimmed.js
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require('../auto');
var test = require('tape');
var defineProperties = require('define-properties');
var callBind = require('call-bind');
var hasStrictMode = require('has-strict-mode')();
var isEnumerable = Object.prototype.propertyIsEnumerable;
var functionsHaveNames = require('functions-have-names')();
var runTests = require('./tests');
test('shimmed', function (t) {
t.equal(Array.prototype.some.length, 1, 'Array#some has a length of 1');
t.test('Function name', { skip: !functionsHaveNames }, function (st) {
st.equal(Array.prototype.some.name, 'some', 'Array#some has name "some"');
st.end();
});
t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
et.equal(false, isEnumerable.call(Array.prototype, 'some'), 'Array#some is not enumerable');
et.end();
});
var supportsStrictMode = (function () { return typeof this === 'undefined'; }());
t.test('bad array/this value', { skip: !supportsStrictMode }, function (st) {
st['throws'](function () { return Array.prototype.some.call(undefined, 'a'); }, TypeError, 'undefined is not an object');
st['throws'](function () { return Array.prototype.some.call(null, 'a'); }, TypeError, 'null is not an object');
st.end();
});
t.test('receiver boxing', function (st) {
st.plan(hasStrictMode ? 3 : 2);
var context = 'x';
Array.prototype.some.call('foo', function () {
st.equal(typeof this, 'object', 'receiver is an object');
st.equal(String.prototype.toString.call(this), context, 'receiver is a string object');
return true;
}, context);
st.test('strict mode', { skip: !hasStrictMode }, function (sst) {
sst.plan(2);
Array.prototype.some.call('foo', function () {
'use strict';
sst.equal(typeof this, 'string');
sst.equal(this, context);
return true;
}, context);
sst.end();
});
st.end();
});
runTests(callBind(Array.prototype.some), t);
t.end();
});