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