1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit-test/tests/basic/splice-delete-non-configurable-during-shrink.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,26 @@
1.4 +/* Test that splice causing deletion of a non-configurable property stops at exactly step 12(v) of ES5 15.4.4.12 */
1.5 +
1.6 +var O = [1,2,3,4,5,6];
1.7 +var A = undefined;
1.8 +Object.defineProperty(O, 3, { configurable: false });
1.9 +
1.10 +try
1.11 +{
1.12 + A = O.splice(0, 6);
1.13 + throw new Error("didn't throw, returned " + A);
1.14 +}
1.15 +catch (e)
1.16 +{
1.17 + assertEq(e instanceof TypeError, true,
1.18 + "deleting O[3] should have caused a TypeError");
1.19 +}
1.20 +
1.21 +assertEq(O.length, 6); // setting length not reached
1.22 +assertEq(A, undefined); // return value not reached
1.23 +
1.24 +assertEq(O[5], undefined); // deletion reached
1.25 +assertEq(O[4], undefined); // deletion reached
1.26 +assertEq(O[3], 4); // deletion caused exception
1.27 +assertEq(O[2], 3); // deletion not reached
1.28 +assertEq(O[1], 2); // deletion not reached
1.29 +assertEq(O[0], 1); // deletion not reached
