Test RealKL loss [skip ci]

src/model.rs

@@ -146,6 +146,12 @@ mod tests {
         assert_eq!(model.bias(), 0.0);
     }
 
+    #[test]
+    fn test_loss_real_kl() {
+        let data = generate_data();
+        assert!(Model::params().loss(Loss::RealKL).nmf(true).quiet(true).fit(&data).is_ok());
+    }
+
     #[test]
     fn test_save_load() {
         let data = generate_data();