@Test
public void init_whenPassedHtmlData_shouldPutItInLocalExtras() throws Exception {

    String expectedHtmlData = "expected html data";
    expectedServerExtras.put(HTML_RESPONSE_BODY_KEY, expectedHtmlData);
    subject = new CustomEventBannerAdapter(moPubView, CLASS_NAME, "{\"Html-Response-Body\":\"expected html data\"}");
    subject.loadAd();
    verify(banner).loadBanner(
            any(Context.class),
            eq(subject),
            eq(expectedLocalExtras),
            eq(expectedServerExtras)
    );
}