diff --git a/src/runtime2/store/mod.rs b/src/runtime2/store/mod.rs
index f5ee1f0a39c16b8dfb05cd55cc8a62d5f85e0abd..2280851592f0825f9e3a253f27090f01eb44c38d 100644
--- a/src/runtime2/store/mod.rs
+++ b/src/runtime2/store/mod.rs
@@ -3,3 +3,29 @@ pub mod unfair_se_lock;
 pub mod queue_mpsc;
 
 pub(crate) use component::ComponentStore;
+
+#[cfg(test)]
+mod tests {
+    use std::sync::Arc;
+    use std::sync::atomic::{AtomicU64, Ordering};
+
+    // Utility resource structure that counts the number of constructors and
+    // destructor calls.
+    pub struct Resource {
+        dtor: Arc<AtomicU64>,
+        val: u64,
+    }
+
+    impl Resource {
+        fn new(ctor: Arc<AtomicU64>, dtor: Arc<AtomicU64>, val: u64) -> Self {
+            ctor.fetch_add(1, Ordering::SeqCst);
+            return Self{ dtor, val };
+        }
+    }
+
+    impl Drop for Resource {
+        fn drop(&mut self) {
+            self.dtor.fetch_add(1, Ordering::SeqCst);
+        }
+    }
+}
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