public void PersistKeysToRedis_NullConnectionString()
        {
            var builder = new DataProtectionBuilder(new ServiceCollection());

            Assert.Throws <ArgumentNullException>(() => DataProtectionBuilderExtensions.PersistKeysToRedis(builder, null));
        }
 public void PersistKeysToRedis_NullBuilder()
 {
     Assert.Throws <ArgumentNullException>(() => DataProtectionBuilderExtensions.PersistKeysToRedis(null, "connection"));
 }