IntentsBasicSample 9 unresolved dependencies errors

Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve org.robolectric:annotations:4.3. |  
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.google.guava:guava:27.0.1-android. |  
Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.google.truth:truth:1.0. |  
Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve org.robolectric:robolectric:4.3. |  
Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.google.guava:guava:27.0.1-android. |  
Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.google.truth:truth:1.0. |  
Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve org.robolectric:robolectric:4.3. |  
Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.google.guava:guava:27.0.1-android. |  
Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.google.truth:truth:1.0. |  

Comienza reproduciendo la resolución de dependencias para las configuraciones debugAndroidTest, debugUnitTest y releaseUnitTest de IntentsBasicSample. Inspecciona las dependencias declaradas de Robolectric, Guava y Truth; se considera terminado cuando todas las dependencias indicadas se resuelven correctamente para esas configuraciones.

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