AndroidJUnit4 + Robolectric

ExampleInstrumentedTest.kt

package winapi251.app.schoolmeal

import android.content.Context
import androidx.test.core.app.ApplicationProvider
import androidx.test.ext.junit.runners.AndroidJUnit4
import org.junit.Assert.assertEquals
import org.junit.Test
import org.junit.runner.RunWith

@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest
{
    @Test
    fun useAppContext()
    {
        // Context of the app under test.
        val appContext: Context = ApplicationProvider.getApplicationContext()
        assertEquals("winapi251.app.schoolmeal", appContext.packageName)
    }
}