Scenario Test Usecase (no events, number of events)

[wolframhaussig]

Dear all,

I am trying to create unittests for my Spring Modulith application. Creating tests for published events are easy:

scenario.stimulate(() -> collector.poll())
                .andWaitForEventOfType(NewJobEvent.class)
                .toArrive();

What I fail to create:

1. A test that checks that an event was NOT published. The usecase I try to replicate is that the publisher can be configured to temporarily ignore specific event types (e.g. because the target system is not available). So I am looking for something like this:

scenario.stimulate(() -> collector.poll())
            .andWaitAtMost(Duration.ofSeconds(5))
            .andWaitForEventOfType(NewJobEvent.class)
            .not().toArrive();

2. A test that checks for a specific number of events being published. The usecase here is that it should only publish events until a given limit of currently executing jobs is reached. This limit is used to prevent one instance of the service to block all jobs while another instance is idle.

scenario.stimulate(() -> collector.poll())
            .andWaitAtMost(Duration.ofSeconds(5))
            .andWaitForEventOfType(NewJobEvent.class)
           .count(3)
            .toArrive();

Any ideas how to replicate something like this?

Best regards
Wolfram