Mockito以便与任何匹配者进行验证

Question

我在测试servlet过滤器时遇到一些问题。 此Servlet筛选器的目的是在执行filterChain之后在响应时填充一些http标头。 因此，我要测试的是，直到调用嘲笑FilterChain.doFilter之后，才会对我的mockHttpServletResponse进行setHeader调用。

我正在使用mockito：mockito-core：1.8.5

因此，这是一个示例代码片段

@Test
public void filterHeaderInjectionHappensLast() throws Exception {
    javax.servlet.Filter myFilter = new HeaderInjectionFilter();

    mockRequest = mock(javax.servlet.http.HttpServletRequest.class);
    mockResponse = mock(javax.servlet.http.HttpServletResponse.class);
    mockFilterChain = mock(javax.servlet.FilterChain.class);

    myFilter.doFilter(mockRequest, mockResponse, mockFilterChain);

    InOrder inOrder = inOrder(mockFilterChain, mockResponse);
    inOrder.verify(mockFilterChain).doFilter(mockRequest,mockResponse);
    inOrder.verify(mockResponse).setHeader(any(String.class),any(String.class));    
}

该测试将无法验证setHeader是否通过任何字符串参数。 如果我将setHeader验证调用更改为接受代码中使用的特定参数，则测试将成功通过。 验证这样的订单时，可以不使用通配符匹配器吗？

HeaderInjectionFilter愚蠢的看起来像这样

public class HeaderInjectionFilter implements Filter {
    @Override
    public void destroy() {}

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {}

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {
        filterChain.doFilter(request, response); //Always doFilter before we add header to response

        HttpServletResponse httpServletResponse = (HttpServletResponse) response;
        httpServletResponse.setHeader(CACHE_CONTROL, "no-cache");
        httpServletResponse.setHeader(PRAGMA, "no-cache");
    }
}

Answer 1

使用any（String.class）导致该测试失败，因为在提供的Filter实现中，随后有两个对response.setHeader的调用。 inOrder.verify验证交互是否按顺序进行了一次。 因此从技术上讲，测试可以更改为

@Test
public void filterHeaderInjectionHappensLast() throws Exception {
    javax.servlet.Filter myFilter = new HeaderInjectionFilter();

    mockRequest = mock(javax.servlet.http.HttpServletRequest.class);
    mockResponse = mock(javax.servlet.http.HttpServletResponse.class);
    mockFilterChain = mock(javax.servlet.FilterChain.class);

    myFilter.doFilter(mockRequest, mockResponse, mockFilterChain);

    InOrder inOrder = inOrder(mockFilterChain, mockResponse);
    inOrder.verify(mockFilterChain).doFilter(mockRequest,mockResponse);
    inOrder.verify(mockResponse, times(2)).setHeader(any(String.class),any(String.class));    
}

或者，测试应该显式地测试设置的特定标头，这是我要走的路径，因为对于阅读该测试的人来说，它不太明显。