code: @Test public void testGetRequestContentType(){
    String contentType="text/html";
    when(httpServletRequest.getContentType()).thenReturn(contentType);
    context.init(httpServletRequest,httpServletResponse);
    assertEquals(contentType,context.getRequestContentType());
    contentType=null;
    when(httpServletRequest.getContentType()).thenReturn(contentType);
    context.init(httpServletRequest,httpServletResponse);
    assertNull(context.getRequestContentType());
    contentType="text/html; charset=UTF-8";
    when(httpServletRequest.getContentType()).thenReturn(contentType);
    context.init(httpServletRequest,httpServletResponse);
    assertEquals(contentType,context.getRequestContentType());
  }
  