Jetpack compose support

I would like to use junit 5 to test my jetpack compose project.

A compose test rule is required for setting up the UI and using Testing APIs: (documentation)

@get:Rule
val composeTestRule = createAndroidComposeRule<MyActivity>()

This only works for junit 4. Is there any way to use junit 5 with jetpack compose?

[mannodermaus]

Thank you for bringing this up! Unfortunately, test rules are a concept exclusive to JUnit 4 and a new implementation is required to make them work with JUnit 5 (similar to the ActivityScenario support we already have). While I have done some work with Jetpack Compose, I haven’t had the chance to look into testing and specifically how the ComposeTestRule works. In a nutshell, you’d have to convert its content to JUnit 5 extension points such as BeforeEachCallback and AfterEachCallback.

I might consider ramping up a library for Compose support in the near future, once that API stabilizes a little further. Until then, please continue to write your Compose UI tests against the JUnit 4 APIs. If you don’t mind, I’d like to keep this ticket around to keep visibility and gauge interest from people towards this feature. 🙏

[mannodermaus]

I was celebrating the stable release of Jetpack Compose by giving the integration another shot. It’s a very, very simple example but I managed to create a bridge to Compose via the existing JUnit 4 stuff. Feels great to see a @ParameterizedTest driving a Composable ❤️

There’s still a lot to come and I need many more hours to refine this hacky approach, but I’m quite happy about this. 🎉🎉