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.

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

mercurial