### Question:
NavigationMethodReturnValueHandler implements HandlerMethodReturnValueHandler { public void handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception { mavContainer.setView(returnValue); }  boolean supportsReturnType(MethodParameter returnType); void handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer,
			NativeWebRequest webRequest);  }### Answer:
@Test public void shouldSetReturnValueToView() throws Exception { Object returnValue = new Object(); ModelAndViewContainer mavContainer = mock(ModelAndViewContainer.class); this.handler.handleReturnValue(returnValue, mockMethodParameter(Object.class), mavContainer, mock(NativeWebRequest.class)); verify(mavContainer).setView(returnValue); verifyNoMoreInteractions(mavContainer); }