add test for subvector method

core/vector/vector_types.rs

@@ -636,6 +636,18 @@ mod tests {
         assert_eq!(result.vector_type, VectorType::Float32);
     }
 
+    #[test]
+    fn test_subvector() {
+        let input = "[1.0, 2.0, 3.0, 4.0, 5.0]";
+        let value = Value::from_text(input);
+        let vector = parse_string_vector(VectorType::Float32, &value).unwrap();
+
+        let result = subvector(&vector, 1, 3).unwrap();
+
+        assert_eq!(result.dims, 3);
+        assert_eq!(result.vector_type, VectorType::Float32);
+    }
+
     #[quickcheck]
     fn prop_vector_text_roundtrip_2d(v: ArbitraryVector<2>) -> bool {
         test_vector_text_roundtrip(v.into())