Android LifecycleOwner for unit testing

TestLifecycleOwner.kt

import androidx.lifecycle.Lifecycle.State
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.LifecycleRegistry

/**
 * @author Károly Kiripolszky <karcsi@ekezet.com>
 */
class TestLifecycleOwner(state: State = State.STARTED) : LifecycleOwner {
    private val lifecycle = LifecycleRegistry(this)

    init {
        lifecycle.markState(state)
    }

    override fun getLifecycle() = lifecycle
}