kotlin-test
Status
Accepted
Context
kotlin-test is a core Kotlin library, mostly providing idiomatic Kotlin assertion functions,
and we weren’t using it in our tests.
Decision
Introduce a dependency on kotlin-test in unit and Android test source sets across Fenix, Focus,
Android Components and GeckoView. Encourage using its affordances. Start transitioning existing
JUnit usages to kotlin-test with the expectation to transition to using it more in the future.
Consequences
kotlin-test adds about 17 new functions (mostly assertions) and 6 annotations on top of JUnit.
Their advantages include:
idiomatic Kotlin API,
improved compiler/IDE code analysis (smart casts, dead code detection),
improved failure messages.