js/src/jit-test/tests/basic/splice-delete-non-configurable-during-shrink.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 splice causing deletion of a non-configurable property stops at exactly step 12(v) of ES5 15.4.4.12 */
     3 var O = [1,2,3,4,5,6];
     4 var A = undefined;
     5 Object.defineProperty(O, 3, { configurable: false });
     7 try
     8 {
     9   A = O.splice(0, 6);
    10   throw new Error("didn't throw, returned " + A);
    11 }
    12 catch (e)
    13 {
    14   assertEq(e instanceof TypeError, true,
    15            "deleting O[3] should have caused a TypeError");
    16 }
    18 assertEq(O.length, 6); // setting length not reached
    19 assertEq(A, undefined); // return value not reached
    21 assertEq(O[5], undefined); // deletion reached
    22 assertEq(O[4], undefined); // deletion reached
    23 assertEq(O[3], 4); // deletion caused exception
    24 assertEq(O[2], 3); // deletion not reached
    25 assertEq(O[1], 2); // deletion not reached
    26 assertEq(O[0], 1); // deletion not reached

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