TestFilterChain Class — spring-boot Architecture

Source Code

core/spring-boot/src/test/java/org/springframework/boot/web/servlet/support/ErrorPageFilterTests.java lines 441–461

	static class TestFilterChain extends MockFilterChain {

		private final FilterHandler handler;

		TestFilterChain(FilterHandler handler) {
			this.handler = handler;
		}

		@Override
		public void doFilter(ServletRequest request, ServletResponse response) throws IOException, ServletException {
			AtomicBoolean called = new AtomicBoolean();
			Chain chain = () -> {
				if (called.compareAndSet(false, true)) {
					super.doFilter(request, response);
				}
			};
			this.handler.handle((HttpServletRequest) request, (HttpServletResponse) response, chain);
			chain.call();
		}

	}