<Android Kotlin Testing. lateinit property _db has...

# stackoverflow

[user]

Android Kotlin Testing. lateinit property _db has not been initialized
My code:

abstract class DbTest {

@Rule
@JvmField
val countingTaskExecutorRule = CountingTaskExecutorRule()

private lateinit var _db : AppDatabase

val db: AppDatabase
get() = _db

@Before
fun initDb() {
_db = Room.inMemoryDatabaseBuilder(
InstrumentationRegistry.getInstrumentation().context,
AppDatabase::class.java
).build()
}

@After
fun closeDb() {...