ErrorPageFilterTests.java 文件源码

@Test
public void statusErrorWithCommittedResponse() throws Exception {
    this.filter.addErrorPages(new ErrorPage(HttpStatus.BAD_REQUEST, "/400"));
    this.chain = new MockFilterChain() {
        @Override
        public void doFilter(ServletRequest request, ServletResponse response)
                throws IOException, ServletException {
            ((HttpServletResponse) response).sendError(400, "BAD");
            response.flushBuffer();
            super.doFilter(request, response);
        }
    };
    this.filter.doFilter(this.request, this.response, this.chain);
    assertThat(((HttpServletResponseWrapper) this.chain.getResponse()).getStatus())
            .isEqualTo(400);
    assertThat(this.response.isCommitted()).isTrue();
    assertThat(this.response.getForwardedUrl()).isNull();
}