js/src/jit-test/tests/basic/splice-fail-step-16.js@6474c204b198 (annotated)
js/src/jit-test/tests/basic/splice-fail-step-16.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.
| michael@0 | 1 | /* Test that arrays resize normally during splice, even if .length is non-writable. */ |
| michael@0 | 2 | |
| michael@0 | 3 | var arr = [1, 2, 3, 4, 5, 6]; |
| michael@0 | 4 | |
| michael@0 | 5 | Object.defineProperty(arr, "length", {writable: false}); |
| michael@0 | 6 | |
| michael@0 | 7 | try |
| michael@0 | 8 | { |
| michael@0 | 9 | var removed = arr.splice(3, 3, 9, 9, 9, 9); |
| michael@0 | 10 | throw new Error("splice didn't throw, returned [" + removed + "]"); |
| michael@0 | 11 | } |
| michael@0 | 12 | catch (e) |
| michael@0 | 13 | { |
| michael@0 | 14 | assertEq(e instanceof TypeError, true, |
| michael@0 | 15 | "should have thrown a TypeError, instead threw " + e + ", arr is " + arr); |
| michael@0 | 16 | } |
| michael@0 | 17 | |
| michael@0 | 18 | // The exception should happen in step 16, which means we've already removed the array elements. |
| michael@0 | 19 | assertEq(arr[0], 1); |
| michael@0 | 20 | assertEq(arr[1], 2); |
| michael@0 | 21 | assertEq(arr[2], 3); |
| michael@0 | 22 | assertEq(arr[3], 9); |
| michael@0 | 23 | assertEq(arr[4], 9); |
| michael@0 | 24 | assertEq(arr[5], 9); |
| michael@0 | 25 | assertEq(arr.length, 6); |
