@Test
public void loadAd_shouldHaveEmptyServerExtrasOnInvalidJsonParams() throws Exception {

    subject = new CustomEventBannerAdapter(moPubView, CLASS_NAME, "{this is terrible JSON");
    subject.loadAd();
    verify(banner).loadBanner(
            any(Context.class),
            eq(subject),
            eq(expectedLocalExtras),
            eq(expectedServerExtras)
    );
}