js/src/jit-test/tests/arrays/push-slowly-nonwritable-length.js@6474c204b198 (annotated)
js/src/jit-test/tests/arrays/push-slowly-nonwritable-length.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 | load(libdir + "asserts.js"); |
| michael@0 | 2 | |
| michael@0 | 3 | function f(arr, v1, v2) |
| michael@0 | 4 | { |
| michael@0 | 5 | // Ensure array_push_slowly is called by passing more than one argument. |
| michael@0 | 6 | arr.push(v1, v2); |
| michael@0 | 7 | } |
| michael@0 | 8 | |
| michael@0 | 9 | function basic() |
| michael@0 | 10 | { |
| michael@0 | 11 | // Use a much-greater capacity than the eventual non-writable length. |
| michael@0 | 12 | var a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]; |
| michael@0 | 13 | Object.defineProperty(a, "length", { writable: false, value: 6 }); |
| michael@0 | 14 | |
| michael@0 | 15 | assertThrowsInstanceOf(() => f(a, 8675309, 3141592), TypeError); |
| michael@0 | 16 | |
| michael@0 | 17 | assertEq(a.hasOwnProperty(6), false); |
| michael@0 | 18 | assertEq(a[6], undefined); |
| michael@0 | 19 | assertEq(a.hasOwnProperty(7), false); |
| michael@0 | 20 | assertEq(a[7], undefined); |
| michael@0 | 21 | assertEq(a.length, 6); |
| michael@0 | 22 | } |
| michael@0 | 23 | |
| michael@0 | 24 | basic(); |
