48 lines
1.9 KiB
Plaintext
48 lines
1.9 KiB
Plaintext
|
'use strict';
|
||
|
|
|
||
|
|
var orig = Array.prototype.findLastIndex;
|
||
|
|
|
||
|
|
require('../auto');
|
||
|
|
|
||
|
|
var test = require('tape');
|
||
|
|
var has = require('has');
|
||
|
|
var defineProperties = require('define-properties');
|
||
|
|
var callBind = require('call-bind');
|
||
|
|
var isEnumerable = Object.prototype.propertyIsEnumerable;
|
||
|
|
var functionsHaveNames = function f() {}.name === 'f';
|
||
|
|
|
||
|
|
var runTests = require('./tests');
|
||
|
|
|
||
|
|
test('shimmed', function (t) {
|
||
|
|
t.comment('shimmed: ' + (orig === Array.prototype.findLastIndex ? 'no' : 'yes'));
|
||
|
|
|
||
|
|
t.equal(Array.prototype.findLastIndex.length, 1, 'Array#findLastIndex has a length of 1');
|
||
|
|
t.test('Function name', { skip: !functionsHaveNames }, function (st) {
|
||
|
|
st.equal(Array.prototype.findLastIndex.name, 'findLastIndex', 'Array#findLastIndex has name "findLastIndex"');
|
||
|
|
st.end();
|
||
|
|
});
|
||
|
|
|
||
|
|
t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
|
||
|
|
et.equal(false, isEnumerable.call(Array.prototype, 'findLastIndex'), 'Array#findLastIndex 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.findLastIndex.call(undefined, function () {}); }, TypeError, 'undefined is not an object');
|
||
|
|
st['throws'](function () { return Array.prototype.findLastIndex.call(null, function () {}); }, TypeError, 'null is not an object');
|
||
|
|
st.end();
|
||
|
|
});
|
||
|
|
|
||
|
|
t.test('Symbol.unscopables', { skip: typeof Symbol !== 'function' || typeof Symbol.unscopables !== 'symbol' }, function (st) {
|
||
|
|
st.ok(has(Array.prototype[Symbol.unscopables], 'findLastIndex'), 'Array.prototype[Symbol.unscopables] has own `findLastIndex` property');
|
||
|
|
st.equal(Array.prototype[Symbol.unscopables].findLastIndex, true, 'Array.prototype[Symbol.unscopables].findLastIndex is true');
|
||
|
|
st.end();
|
||
|
|
});
|
||
|
|
|
||
|
|
runTests(callBind(Array.prototype.findLastIndex), t);
|
||
|
|
|
||
|
|
t.end();
|
||
|
|
});
|