@qooxdoo/framework/source/class/qx/test/lang/normalize/Function.js

The JS Framework for Coders

/* ************************************************************************

   qooxdoo - the new era of web development

   http://qooxdoo.org

   Copyright:
     2007-2008 1&1 Internet AG, Germany, http://www.1und1.de

   License:
     MIT: https://opensource.org/licenses/MIT
     See the LICENSE file in the project's top-level directory for details.

   Authors:
     * Fabian Jakobs (fjakobs)

************************************************************************ */

/**
 * @require(qx.lang.normalize.Function)
 */
qx.Class.define("qx.test.lang.normalize.Function",
{
  extend : qx.dev.unit.TestCase,

  members :
  {
    testBind : function()
    {
      var context = null;
      var result = 0;

      var add = function(a, b)
      {
        context = this;
        return a + b;
      };

      context = null;
      result = add(1, 2);

      this.assertEquals(context, window);
      this.assertEquals(3, result);

      context = null;
      var boundAdd = add.bind(this);
      result = boundAdd(1, 3);
      this.assertEquals(context, this);
      this.assertEquals(4, result);

      context = null;
      var addOne = add.bind(this, 1);
      result = addOne(4);
      this.assertEquals(context, this);
      this.assertEquals(5, result);
    },


    testBindWithUndefinedArguments : function()
    {
      var undef;
      var callback = function(undef, arg) {
        this.assertTrue(arg);
      };
      var bound = callback.bind(this, undef, true);
      bound();
    }
  }
});