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assert_running

TestApp::assert_running asserts the service is still up: no fail-fast failure has shut it down.

It is for a failure the service must survive. Under the default FailurePolicy a delivery that does not decode is dropped, and the service keeps running; assert_last_failed_to_decode checks that delivery. A handler panic under the default policy stops the service, and so does a decode failure under a fail_fast decode policy. On failure the assertion names the failure that stopped the service. assert_shut_down is the opposite assertion, and run_result gives the same state as a value.

Example​

examples/testing_service_state.rs
#[tokio::test]
async fn an_undecodable_order_does_not_stop_the_service() -> Result<(), Box<dyn Error>> {
    let tb = TestApp::start(app()).await?;
    tb.publish("orders", &json!({ "id": "seven" })).await?;

    tb.broker::<MemoryBroker>()
        .subscriber("orders")
        .assert_called_once()
        .assert_last_failed_to_decode();
    tb.assert_running();
    Ok(())
}