tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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splice-fail-step-16.js (691B)

      1 /* Test that arrays resize normally during splice, even if .length is non-writable. */
      2 
      3 var arr = [1, 2, 3, 4, 5, 6];
      4 
      5 Object.defineProperty(arr, "length", {writable: false});
      6 
      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 }
     17 
     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);