}
public void testPersistNoChange()
{
MockControl sourceControl = newControl(CookieSource.class);
CookieSource source = (CookieSource) sourceControl.getMock();
MockControl requestControl = newControl(WebRequest.class);
WebRequest request = (WebRequest) requestControl.getMock();
MockControl tlc = newControl(ThreadLocale.class);
ThreadLocale tl = (ThreadLocale) tlc.getMock();
// Training
source.readCookieValue(TapestryConstants.LOCALE_COOKIE_NAME);
sourceControl.setReturnValue(null);
request.getLocale();
requestControl.setReturnValue(Locale.JAPANESE);