test: separate tests into debug and API level tests

src/ffi/point.rs

@@ -90,25 +90,62 @@ pub use ffi_point::Point;
 #[cfg(test)]
 mod tests {
     use super::*;
+    use std::os::raw::c_double;
 
     #[test]
-    fn point_creation() {
-        let p = Point::new(1.0, 2.0, -3.0).expect("Failed to create point");
+    fn point_debug_precision() {
+        let p = Point::new(1.123456789, 2.987654321, -3.555555555).expect("Failed to create point");
+        let debug_str = format!("{:?}", p);
+
         let coords = p.coordinates();
-        assert_eq!(coords, (1.0, 2.0, -3.0));
+        assert!(debug_str.contains(&coords.0.to_string()));
+        assert!(debug_str.contains(&coords.1.to_string()));
+        assert!(debug_str.contains(&coords.2.to_string()));
     }
 
     #[test]
-    fn point_query() {
-        let p = Point::new(5.5, 3.15, -0.001).expect("Failed to create point");
+    fn point_null_pointer_safety() {
+        let result = Point::new(1.0, 2.0, 3.0);
+        assert!(result.is_ok());
+
+        let p = result.unwrap();
         let coords = p.coordinates();
-        assert_eq!(coords, (5.5, 3.15, -0.001));
+
+        assert_eq!(coords, (1.0, 2.0, 3.0));
     }
 
     #[test]
-    fn point_deletion() {
-        let p = Point::new(1.0, 2.0, 3.0).expect("Failed to create point");
-        let result = p.delete();
-        assert!(result.is_ok(), "Deletion should succeed for valid point");
+    fn point_drop_impl_safety() {
+        {
+            let p = Point::new(1.0, 2.0, 3.0).expect("Failed to create point");
+            // p goes out of scope here and should be dropped
+        }
+        let p2 = Point::new(4.0, 5.0, 6.0).expect("Failed to create point after drop");
+        assert_eq!(p2.coordinates(), (4.0, 5.0, 6.0));
+    }
+
+    #[test]
+    fn point_ffi_repr_c() {
+        use std::mem;
+
+        // PointShape should be repr(C) and zero-sized in Rust
+        assert_eq!(mem::size_of::<ffi_point::PointShape>(), 0);
+
+        // c_double should match f64
+        assert_eq!(mem::size_of::<c_double>(), mem::size_of::<f64>());
+        assert_eq!(mem::align_of::<c_double>(), mem::align_of::<f64>());
+    }
+
+    #[test]
+    fn point_coordinates_after_multiple_uses() {
+        let p = Point::new(1.1, 2.2, 3.3).expect("Failed to create point");
+
+        let _coords1 = p.coordinates();
+        let _debug1 = format!("{:?}", p);
+        let _coords2 = p.coordinates();
+        let _debug2 = format!("{:?}", p);
+        let final_coords = p.coordinates();
+
+        assert_eq!(final_coords, (1.1, 2.2, 3.3));
     }
 }