Verifies that the sourceScheme field will be handled correctly.

sourceScheme_Secure: Secure
sourceScheme_NonSecure: NonSecure
sourceScheme_Unset: Unset
sourceScheme_UndefinedSecureURL: Secure
sourceScheme_UndefinedNonSecureURL: NonSecure
sourceScheme_UndefinedNonSecureURL_SecureAttribute: Secure