test: add drop tests

1 files changed, 62 insertions, 1 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 0f49968..e63c462 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -636,6 +636,7 @@ mod tests
     use std::any::TypeId;
     use std::mem::offset_of;
     use std::ptr::NonNull;
+    use std::sync::atomic::{AtomicUsize, Ordering};
 
     use crate::{FieldMetadata, MultiVec, OwnedAnyPtr};
 
@@ -648,7 +649,6 @@ mod tests
             length = $length: literal
         ) => {{
             #[repr(C)]
-            #[derive(Debug)]
             struct Data
             {
                 $($field_name: [$field_type; $length],)*
@@ -907,4 +907,65 @@ mod tests
 
         assert_eq!(multi_vec.get_field(2).as_slice::<u8>(), [120, 88, 54, 3, 7]);
     }
+
+    #[test]
+    fn fields_are_dropped()
+    {
+        static THING_DROPPED_CNT: AtomicUsize = AtomicUsize::new(0);
+
+        struct Thing
+        {
+            _num: u32,
+        }
+
+        impl Drop for Thing
+        {
+            fn drop(&mut self)
+            {
+                THING_DROPPED_CNT.fetch_add(1, Ordering::Relaxed);
+            }
+        }
+
+        let mut data;
+        let multi_vec = multi_vec_with_data!(
+            data = &mut data,
+            {
+                _a: Thing = [Thing { _num: 567}, Thing { _num: 890}, Thing { _num: 345}],
+            },
+            length = 3
+        );
+
+        drop(multi_vec);
+
+        assert_eq!(THING_DROPPED_CNT.load(Ordering::Relaxed), 3);
+    }
+
+    #[test]
+    fn zero_sized_fields_are_dropped()
+    {
+        static THING_DROPPED_CNT: AtomicUsize = AtomicUsize::new(0);
+
+        struct Thing;
+
+        impl Drop for Thing
+        {
+            fn drop(&mut self)
+            {
+                THING_DROPPED_CNT.fetch_add(1, Ordering::Relaxed);
+            }
+        }
+
+        let mut data;
+        let multi_vec = multi_vec_with_data!(
+            data = &mut data,
+            {
+                _a: Thing = [const {Thing}; 3],
+            },
+            length = 3
+        );
+
+        drop(multi_vec);
+
+        assert_eq!(THING_DROPPED_CNT.load(Ordering::Relaxed), 3);
+    }
 }