private void checkRequestLogError(RequestLogErrorChecker checker) throws Exception {
        final RequestLog log = requestLogQueue.take();
        assertThat(log.isComplete()).isTrue();

        final RpcRequest rpcReq = (RpcRequest) log.requestContent();
        if (rpcReq != null) {
            assertThat(rpcReq.serviceType()).isEqualTo(GrpcLogUtil.class);
        }

        checker.check(log.responseHeaders(), rpcReq, log.responseCause());
    }
Start a fullDuplexCall which the server will not respond, and verify the deadline expires.
grpc/src/test/java/com/linecorp/armeria/client/grpc/GrpcClientTest.java