openpgp: Assert that central types are Send and Sync.

  - Add compile-time assertions that public types like Packet, TPK,
    Message... can be send across thread boundaries, and can be
    safely accessed from multiple threads.

  - Fixes #334.

1 files changed, 7 insertions, 0 deletions

diff --git a/openpgp/src/fingerprint.rs b/openpgp/src/fingerprint.rs
index a12ec118..309313be 100644
--- a/openpgp/src/fingerprint.rs
+++ b/openpgp/src/fingerprint.rs
@@ -191,4 +191,11 @@ Charlie Delta Echo Foxtrot Zero One Two Three Four Five Six Seven";
 
         assert_eq!(fpr.to_icao(), expected);
     }
+
+    #[test]
+    fn fingerprint_is_send_and_sync() {
+        fn f<T: Send + Sync>(_: T) {}
+        f(Fingerprint::from_hex(
+            "0123 4567 89AB CDEF 0123 4567 89AB CDEF 0123 4567").unwrap());
+    }
 }