I am using Spek2 which spawns an embedded server (...

# spek

[Franz See]

I am using Spek2 which spawns an embedded server (running on a different thread). I want this server to be up and running while executing all tests but shut down after finishing all tests. Normally (in junit 5 or testng), i would do something like this when i create the server.

fun getOrCreateServer() {
    ...
    Runtime.getRuntime().addShutdownHook(Thread(Runnable {
        server.shutdown();
    }))
    return server
}

Then in my tests, I would just call this method to get the server instance and do stuff with it. Then after all tests have executed, this would be called to shutdown the server

In Spek2, this does not get called

How do I what I want to do in Spek2? 🙂

[raniejade]

Hey! Maybe something like this:

val server by memoized(CachingMode.SCOPE) { ... }

...

afterGroup { server.shutdown() }

Alternatively, memoized accepts a destructor parameter - which will be called when the memoized object is not needed anymore.

[Franz See]

in junit (for example), i dont put server.shutdown() in the teardown (i.e. afterGroup). Instead, when i start the server, I add the server.shutdown() in the JVM shutdown hook.

That's because i want to start the server once for ALL the tests, and shut it down once ALL the tests are done

If I put the shutdown in the teardown, it will start and stop the server for every test suite.

[raniejade]

Right, there are a few cases where shutdown hooks won't work. IIRC, JUnit calls System.exit(0) after all tests are finish - because lingering non-daemon threads can block the jvm from shutting down (which can cause the shutdown hooks not to be called).

[Franz See]

Actually, after doing some more work, looks like the shutdown hook does get call when running spek from gradle. but it does not when running it using intellij's spek framework plugin