Separate tests for OAuth string token and credential objects.
Separate tests for OAuth string token and credential objects.

jamestalmage/angularfire,FirebaseExtended/angularfire,yoda-yoda/angularfire,denisKaranja/angularfire,FirebaseExtended/angularfire,bpietravalle/angularfire,fbentz/angularfire,cesarmarinhorj/angularfire,nbr1ninrsan2/angularfire,jamestalmage/angularfire,itxd/angularfire,yoda-yoda/angularfire,denisKaranja/angularfire,jamestalmage/angularfire,nbr1ninrsan2/angularfire,douglascorrea/angularfire,yoda-yoda/angularfire,cesarmarinhorj/angularfire,fbentz/angularfire,nbr1ninrsan2/angularfire,douglascorrea/angularfire,fbentz/angularfire,bpietravalle/angularfire,itxd/angularfire,bpietravalle/angularfire,itxd/angularfire,FirebaseExtended/angularfire,denisKaranja/angularfire,cesarmarinhorj/angularfire,douglascorrea/angularfire