works

tests/test.rs

@@ -0,0 +1,38 @@
+#[cfg(test)]
+mod tests {
+    use apet_ex1::{circuit::Circuit, scalar_to_bits::scalar_to_bits};
+    use curve25519_dalek::scalar::Scalar;
+    use num_bigint::BigUint;
+    use rand::rngs::OsRng;
+    #[test]
+    fn test_scalar_comparison_via_circuit() {
+        for _ in 0..100 {
+            let a = Scalar::random(&mut OsRng);
+            let b = Scalar::random(&mut OsRng);
+
+            // Convert to bit representation
+            let a_bits = scalar_to_bits(&a);
+            let b_bits = scalar_to_bits(&b);
+
+            // Combine A and B bits into one input vector
+            let mut input_bits = Vec::with_capacity(512);
+            input_bits.extend_from_slice(&a_bits);
+            input_bits.extend_from_slice(&b_bits);
+
+            // Build and evaluate the comparison circuit
+            let circuit = Circuit::compare_n_bit_numbers(input_bits, 256);
+            let circuit_result = circuit.eval();
+
+            // Compare expected result using BigUint
+            let a_int = BigUint::from_bytes_le(&a.to_bytes());
+            let b_int = BigUint::from_bytes_le(&b.to_bytes());
+            let expected = a_int > b_int;
+
+            assert_eq!(
+                circuit_result, expected,
+                "Mismatch: A = {:?}, B = {:?}, A > B = {}, but circuit says {}",
+                a_int, b_int, expected, circuit_result
+            );
+        }
+    }
+}