ErrorPageFilterTests.java 文件源码

@Test
public void subClassExceptionError() throws Exception {
    this.filter.addErrorPages(new ErrorPage(RuntimeException.class, "/500"));
    this.chain = new MockFilterChain() {
        @Override
        public void doFilter(ServletRequest request, ServletResponse response)
                throws IOException, ServletException {
            super.doFilter(request, response);
            throw new IllegalStateException("BAD");
        }
    };
    this.filter.doFilter(this.request, this.response, this.chain);
    assertThat(((HttpServletResponseWrapper) this.chain.getResponse()).getStatus())
            .isEqualTo(500);
    assertThat(this.request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE))
            .isEqualTo(500);
    assertThat(this.request.getAttribute(RequestDispatcher.ERROR_MESSAGE))
            .isEqualTo("BAD");
    assertThat(this.request.getAttribute(RequestDispatcher.ERROR_EXCEPTION_TYPE))
            .isEqualTo(IllegalStateException.class.getName());
    assertThat(this.request.getAttribute(RequestDispatcher.ERROR_REQUEST_URI))
            .isEqualTo("/test/path");
    assertThat(this.response.isCommitted()).isTrue();
}