splice-fail-step-16.js

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/* Test that arrays resize normally during splice, even if .length is non-writable. */

var arr = [1, 2, 3, 4, 5, 6];

Object.defineProperty(arr, "length", {writable: false});

try

  var removed = arr.splice(3, 3, 9, 9, 9, 9);

  throw new Error("splice didn't throw, returned [" + removed + "]");

catch (e)

  assertEq(e instanceof TypeError, true,

           "should have thrown a TypeError, instead threw " + e + ", arr is " + arr);

// The exception should happen in step 16, which means we've already removed the array elements.

assertEq(arr[0], 1);

assertEq(arr[1], 2);

assertEq(arr[2], 3);

assertEq(arr[3], 9);

assertEq(arr[4], 9);

assertEq(arr[5], 9);

assertEq(arr.length, 6);