Help on using JSNI from within a GWTTestCase

Hi there,

I'm trying to use JSNI from within a GWTTestCase. The JavaScript object is returned via a JSON response from a servlet I have running for the test. I then eval the JSON and assert the corresponding overlay object's value. Firstly, does this sound like a reasonable thing to do from within GWTTestCase?

Here's my relevant bits of code. I have declared a parameterised class to handle JSON payloads with the parameter representing the type of JavaScriptObject I want to evaluate to:

public abstract class JSONRequestCallback<T extends JavaScriptObject>

    implements RequestCallback {

  private final native T evalJSON(String jsonText) /*-{

    return eval(jsonText);

  }-*/;

  @Override

  public void onResponseReceived(Request request, Response response) {

    String responseText = response.getText();

    onResponseReceived(request, evalJSON(responseText));

  }

  /**

   * Handle a JSON payload response.

   * 

   * @param request

   *            the original request object.

   * @param response

   *            the JSON response marshalled as a JavaScript object.

   */

  public abstract void onResponseReceived(Request request, T response);

}

To call it I issue an HTTP request with the callback provided like this in my test:

new JSONRequestCallback<JsArray<SomeModelObject>>() {

          @Override

          public void onError(Request request, Throwable exception) {

            fail("Should not get here.");

          }

          @Override

          public void onResponseReceived(Request request,

              JsArray<SomeModelObject> deals) {

            // TODO Validate the response.

            assertEquals(1, deals.length());

            SomeModelObject bo = deals.get(0);

            assertEquals("A", bo.getAccountProductType());

            finishTest();

          }

        });

SomeBusinessObject is an overlay class with getAccountProductType declared as follows:

  public final native String getAccountProductType() /*-{

    return this.accountProductType;

  }-*/;

Unfortunately for me, the second assertion (for "A") fails. The servlet definitely responds correctly and I can see via the debugger that eval is being performed on the JSON response.

Any guidance is most appreciated.

Kind regards,

Christopher

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