java如何模拟将ServletRequest转换为HttpServletRequest的类？

Question

这是我的密码

public void doFilter(ServletRequest req, ServletResponse res, FilterChain filterChain)
        throws IOException, ServletException {
    HttpServletRequest request = (HttpServletRequest) req;
    HttpServletResponse response = (HttpServletResponse) res;
    HttpSession session = request.getSession(false);
}

请求是空的。如何模仿这句台词

Answer 1

您应该创建HttpServletRequest和HttpServletResponse的模拟，如下所示：

@Test
public void testDoFilter() throws Exception {
    HttpServletRequest request = mock(HttpServletRequest.class);
    HttpServletResponse response = mock(HttpServletResponse.class);
    FilterChain filterChain = mock(FilterChain.class);

    Handler handler = new Handler();
    handler.doFilter(request, response, filterChain);

    verify(request).getSession(false);
    // other assertions
}