diff --git a/app-proto/src/engine.rs b/app-proto/src/engine.rs
index 343b96e..ca05646 100644
--- a/app-proto/src/engine.rs
+++ b/app-proto/src/engine.rs
@@ -500,41 +500,4 @@ mod tests {
             println!("{:<4} │ {}", step, scaled_loss);
         }
     }
-    
-    /* TO DO */
-    // --- new test placed here to avoid merge conflict ---
-    
-    // at the frozen indices, the optimization steps should have exact zeros,
-    // and the realized configuration should match the initial guess
-    #[test]
-    fn frozen_entry_test() {
-        let gram = {
-            let mut gram_to_be = PartialMatrix::new();
-            for j in 0..2 {
-                for k in j..2 {
-                    gram_to_be.push_sym(j, k, if (j, k) == (1, 1) { 1.0 } else { 0.0 });
-                }
-            }
-            gram_to_be
-        };
-        let guess = DMatrix::from_columns(&[
-            point(0.0, 0.0, 2.0),
-            sphere(0.0, 0.0, 0.0, 1.0)
-        ]);
-        let frozen = [(3, 0), (3, 1)];
-        println!();
-        let (config, success, history) = realize_gram(
-            &gram, guess.clone(), &frozen,
-            1.0e-12, 0.5, 0.9, 1.1, 200, 110
-        );
-        assert_eq!(success, true);
-        for base_step in history.base_step.into_iter() {
-            for index in frozen {
-                assert_eq!(base_step[index], 0.0);
-            }
-        }
-        for index in frozen {
-            assert_eq!(config[index], guess[index]);
-        }
-    }
 }
\ No newline at end of file