How do I pass test generated values to AfterEachCallback

[pratyushdeshpande]

Hello,

I want to pass the values which was generated during the test phase to the AfterEachCallback extension where I need to then cleanup that value. Since my Tests runs parallel, I also want to be thread safe, as it should not clean up value for test which are not completed. Also, I did not find a way to pass the value to AfterEachCallback extension, can someone help ?

[marcphilipp]

You can use a ParameterResolver to inject an object into the test method that can create the object you need to clean up or register it. The extension implementing ParameterResolver and AfterEachCallback can then use the ExtensionContext.Store to store and retrieve it. If cleanup is all you need, you might not even need to implement AfterEachCallback but can wrap your object in CloseableResource before putting it into ExtensionContext.Store which will cause it to be cleaned up automatically.

[marcphilipp]

How would the extension know which objects it needs to clean up?

[pratyushdeshpande]

I was thinking passing the object from beforeEachCallback to the Tests, update the object in the Test and then cleanup in afterEachCallback, but again I could not find how to pass the object from beforeEachCallback to Test itself

[pratyushdeshpande]

Also, How would the ExtensionContext.getStore work with different tests running in parallel. I have done something like this:
in resolveParamter method :
extensionContext.getStore(ExtensionContext.Namespace.GLOBAL).getOrComputeIfAbsent(extensionContext.getUniqueId(), (id) -> objectToBeModifiedInTest);

And in afterEach method :
(ObjectToBeModifiedInTest) extensionContext.getStore(ExtensionContext.Namespace.GLOBAL).remove(extensionContext.getUniqueId());

Will the above remove the Object modified for that specified test or can it occur that it remove the Object created in other test that was running in parallel ?

[marcphilipp]

Every ExtensionContext has its own Store. Using that takes care of concurrency for you. Please see TemporaryDirectory for a complete example that does something very similar.

[pratyushdeshpande]

Thank you so much your suggestion, I was able to resolve the issue