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, 6 insertions, 0 deletions

diff --git a/openpgp/src/keyid.rs b/openpgp/src/keyid.rs
index 2e77c962..275599f9 100644
--- a/openpgp/src/keyid.rs
+++ b/openpgp/src/keyid.rs
@@ -215,4 +215,10 @@ mod test {
         assert_match!(KeyID::Invalid(_) =
                       KeyID::from_hex("0x587DAEF1").unwrap());
     }
+
+    #[test]
+    fn keyid_is_send_and_sync() {
+        fn f<T: Send + Sync>(_: T) {}
+        f(KeyID::from_hex("89AB CDEF 0123 4567").unwrap());
+    }
 }