@qooxdoo/framework/source/class/qx/test/util/DeferredCall.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)

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

qx.Class.define("qx.test.util.DeferredCall", {
  extend: qx.dev.unit.TestCase,

  members: {
    testGlobalErrorHandling() {
      if (navigator.plugins.length == 0) {
        this.skip("test disabled on headless browsers");
      }
      
      if (qx.core.Environment.get("browser.name") == "safari") {
        this.skip(
          "we can not detect headless mode in safari"
        );
      }

      var fail = function () {
        throw new Error("fail");
      };

      var onError = function () {
        this.resume(function () {
          qx.event.GlobalError.setErrorHandler(null, null);
        });
      };

      var deferredCall = new qx.util.DeferredCall(fail, this);
      qx.event.GlobalError.setErrorHandler(onError, this);

      deferredCall.schedule();
      this.wait(1000, function () {
        qx.event.GlobalError.setErrorHandler(null, null);
        throw new qx.core.AssertionError(
          "Asynchronous Test Error",
          "Timeout reached before resume() was called."
        );
      });
    }
  }
});