Android - Custom runner's newApplication called but HiltTestApplication not being used?

Question

I'm working on app with Hilt and trying to make some instrumentation tests on it.

But my tests are crashing with:

java.lang.IllegalStateException: Hilt test, x.B, cannot use a @HiltAndroidApp application but found <...MyApplication>. To fix, configure the test to use HiltTestApplication or a custom Hilt test application generated with @CustomTestApplication.

Even tho I've made custom Runner : AndroidJUnitRunner that seems to be called properly since both logs are shown in logcat. But the super.newApplication call allways returns my main Application instead of HiltTestApplication

package x

// ...

class Runner : AndroidJUnitRunner() {

    override fun newApplication(
        cl: ClassLoader?,
        className: String?,
        context: Context?
    ): Application {
        Log.e("log", "HETTT")
        val app = super.newApplication(
            cl, HiltTestApplication::class.java.name, context
        )
        Log.e("log", "App made - ${app.javaClass.name}")

        return app
    }
}

and used it in gradle

android {
    defaultConfig {
        testInstrumentationRunner "x.Runner"
    }
}

Hilt gradle plugin, testing lib and compiler are set to '2.43.2' and JUnit runner is set to '1.4.0'

Can you think of something I might be doing wrong? Is there any way other plugins/libs can interfere with my configuration?

Answer 1

OK, so I'm not sure what the problem exactly is, but I've managed to force my Runner to instantiate HiltTestApplication properly using this approach. Now everything seems to work just fine.

class Runner : AndroidJUnitRunner() {

    override fun newApplication(
        cl: ClassLoader,
        className: String,
        context: Context
    ): Application = Instrumentation.newApplication(HiltTestApplication::class.java, context)
}