js/src/jit-test/tests/for-of/semantics-07.js@6474c204b198
js/src/jit-test/tests/for-of/semantics-07.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 // Deleting the .next method of an iterator in the middle of a for-of loop
2 // causes a TypeError at the next iteration.
4 load(libdir + "asserts.js");
5 load(libdir + "iteration.js");
7 var iterProto = Object.getPrototypeOf([][std_iterator]());
8 var s = '';
9 assertThrowsInstanceOf(function () {
10 for (var v of ['duck', 'duck', 'duck', 'goose', 'FAIL']) {
11 s += v;
12 if (v === 'goose')
13 delete iterProto.next;
14 s += '.';
15 }
16 }, TypeError);
17 assertEq(s, 'duck.duck.duck.goose.');
