### Question:
WXWebView implements IWebView { @Override public void goBack() { if(getWebView() == null) return; getWebView().goBack(); } WXWebView(Context context, String origin); @Override View getView(); @Override void destroy(); @Override void loadUrl(String url); @Override void loadDataWithBaseURL(String source); @Override void reload(); @Override void goBack(); @Override void goForward(); @Override void postMessage(Object msg); @Override void setShowLoading(boolean shown); @Override void setOnErrorListener(OnErrorListener listener); @Override void setOnPageListener(OnPageListener listener); @Override void setOnMessageListener(OnMessageListener listener);  }### Answer:
@Test public void testGoBack() throws Exception { testLoadUrl(); view.loadUrl("http: view.goBack(); }