Verify Spock mock with specified timeout

Question

In Mockito there is option to verify if mock method has been called, and specify timeout for this verification (VerificationWithTimeout), for example:

Answer 1

This doesn't do exactly what the question asked, but I found it a bit cleaner that using a variable. If you have other conditions to asynchronously test in addition to the interaction, then you can declare the interactions at mock creation time and then use PollingConditions to test the other conditions. PollingConditions will either fail the test or block until the conditions pass, so that by the time the interaction is tested, the method should have been called:

@MicronautTest
class KernelManagerTest extends Specification {

    @Inject
    KernelManager kernelManager

    //create conditions
    PollingConditions conditions = new PollingConditions(timeout: 10, initialDelay: 1)

    class Exits {

        static createKernel (String[] args) {
            System.exit(args[0].toInteger())
        }

    }

    def "handles a system exit from within kernel"() {
        given:
        // set custom kernel
        kernelManager.kernelClass = Exits
        // create custom logger
        kernelManager.log = Mock(Logger) {
            1 * warn("Kernel exited unexpectedly.", _ as UnexpectedExitException)
        }

        when:
        // create new kernel (exit 1)
        kernelManager.startNewKernel("1")

        then:
        conditions.eventually {
            kernelManager.kernelInstances.size() == 0
            kernelManager.kernelThreads.size() == 0
        }
    }
}