test262-automation e9a5a7f918 [javascriptcore-test262-automation] changes from git@github.com:WebKit/webkit.git at sha 949e26452cfa153a7f4afe593da97e2fe9e1b706 on Tue Jul 03 2018 14:35:15 GMT-0400 (Eastern Daylight Time) (#1620)
* [javascriptcore-test262-automation] changes from git@github.com:WebKit/webkit.git at sha 949e26452cfa153a7f4afe593da97e2fe9e1b706 on Tue Jul 03 2018 14:35:15 GMT-0400 (Eastern Daylight Time)
2018-07-03 15:59:58 -04:00

23 lines
529 B
JavaScript

function shouldBe(actual, expected) {
if (actual !== expected)
throw new Error('bad value: ' + actual);
}
var array = [0, 1, 2, 3, 4, 5];
Object.defineProperty(Array.prototype, '0', {
get() {
throw new Error('cannot get to 0 getter');
},
set() {
throw new Error('cannot put to 0 setter');
}
});
var result = Array.from(array);
shouldBe(result.length, array.length);
shouldBe(result instanceof Array, true);
for (var i = 0; i < array.length; ++i)
shouldBe(result[i], array[i]);