Issue 505 - [Typed objects] Implement array helper methods

test/tests/typedObjects.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2014 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 709 matching lines @@
     array.splice(2, 1);
     deepEqual(array.toJS(), [4, 1, 5], "Using splice to remove an element succeeded");
     array.splice(0, 2, 9);
     deepEqual(array.toJS(), [9, 5], "Using splice to remove two elements and insert one succeeded");
     array.splice(1, 1, 4, 2, 7);
     deepEqual(array.toJS(), [9, 4, 2, 7], "Using splice to remove one element and insert two succeeded");
     array.splice(3, 8);
     deepEqual(array.toJS(), [9, 4, 2], "Using splice with excessive count parameter succeeded");
     array.splice(9, 1, 3);
     deepEqual(array.toJS(), [9, 4, 2, 3], "Using splice with excessive index parameter succeeded");
-    array.splice(-2, 2, 7);
-    deepEqual(array.toJS(), [7, 2, 3], "Using splice with negative index parameter succeeded");
+    array.splice(-2, 1, 7);
+    deepEqual(array.toJS(), [9, 4, 7, 3], "Using splice with negative index parameter succeeded");
+    array.splice(-20, 2, 10);
+    deepEqual(array.toJS(), [10, 7, 3], "Using splice with excessive negative index parameter succeeded");
   });
 
   test("String type", function()
   {
     let {string} = require("typedObjects");
 
     let s1 = string();
     ok(s1, "String created without parameters");
     equal(s1.length, 0, "String length is zero");
     equal(s1.toString(), "", "JavaScript representation is empty string");
@@ skipping 58 matching lines @@
     s11.release();
 
     let s12 = string(s8, 4);
     ok(s12, "String created as typed substring without length parameter");
     equal(s12.length, 10, "String length set correctly");
     equal(s12.toString(), "longstring", "JavaScript representation is correct");
     s12.release();
     s8.release();
   });
 })();