Carlos Daniel, In addition, Google provides a LiveData util., LiveDataTestUtil.kt, sample in the Android Testing Codelab Unit Testing with Coroutines section. It looks promising, but I have yet to test it in the wild so I cannot properly compare it yet.

LiveDataTestUtil.kt

import androidx.lifecycle.LiveData
import androidx.lifecycle.Observer
import java.util.concurrent.CountDownLatch
import java.util.concurrent.TimeUnit 
object LiveDataTestUtil {     
    /**     
     * Get the value from a LiveData object. We're waiting for LiveData to emit, for 2 seconds.     
     * Once we got a notification via onChanged, we stop observing.     
     */    
    fun <T> getValue(liveData: LiveData<T>): T {        
        val data = arrayOfNulls<Any>(1)        
        val latch = CountDownLatch(1)        
        val observer = object : Observer<T> {            
            override fun onChanged(o: T?) {                
                data[0] = o                
                latch.countDown()                          
                liveData.removeObserver(this)            
            }        
         }        
         liveData.observeForever(observer)        
         latch.await(2, TimeUnit.SECONDS)         
         
         @Suppress("UNCHECKED_CAST")        
         return data[0] as T    
     }
}