Integration between ceylon.test and java junit test

[DiegoCoronel]

Theres lots of famous enterprise frameworks (SprintBoot, Wildfly, etc) extending JUnit behavior to provide a more useful test environment. Currently we can use these frameworks with Ceylon with almost no configuration, but we dont have anything to integrate with their test environment and this is a big restriction to make real programs because we are unable to test the code using these frameworks test environment.

This issue is much more a request for feedback to understand what are the steps to make ceylon.test delegate to junit environment.

[DiegoCoronel]

In my mind one possible solution:

• Declare some kind of extension in ceylon test that will look up for junit test annotation
• Programatically setup Junit environment
• Delegate all tests found to junit

Of course Im talking about all this with no knowledge of both test frameworks :( .. so maybe there are restrictions that i dont know.. but Im available to focus my efforts to help with this issue and complete the enterprise development with ceylon + java integration.

What do you think @thradec ?

[luolong]

My take on this is that if we do integrate with JUnit, we should aim for compatibility/integration with JUnit 5/Jupiter as a TestEngine implementation.

[gavinking]

So why precisely is it that we can't simply use JUnit or Arquillian directly from Ceylon?

[DiegoCoronel]

So why precisely is it that we can't simply use JUnit or Arquillian directly from Ceylon?

I believe for that we would need to create our Runner, but Arquillian and Sprinboot have their own runner and we cant specify 2 Runners for tests.

[luolong]

Well, I suppose we can. Use JUnit directly from Ceylon that is.

Although I have not tried it myself, so I can not vouch of how well it does work or at what point it falls over.

I suspect that JUnit's native test discovery & execution method might not work so well for Ceylon tests. But I might be wrong and it all works out fine.

What I would like to see however is that ceylon.test tests could be picked up by third party test runners implementing JUnit 5 test runner protocol. That includes IDEs (currently only IDEA implements support for JUnit 5, but Eclipse support is in the works and I have no doubt that others are following suit), build tools, CI platforms, etc.