What is the test for cruel and unusual punishment for a juvenile offender for a non-homicide crime?

"[S]entencing a juvenile offender for a nonhomicide offense to a term of years with a parole eligibility date that falls outside the juvenile offender's natural life expectancy constitutes cruel and unusual punishment in violation of the Eighth Amendment. Although [parole] authorities may later determine that [the offenders] should remain incarcerated for their natural lives, the state may not deprive them at sentencing of a meaningful opportunity to demonstrate their rehabilitation and fitness to reenter society in the future." (People v. Caballero (2012) 55 Cal.4th 262, 268; see also Graham v. Florida (2010) 560 U.S. 48, 75.)