Fix #51 pending membership expiration seem s to revoke a validated identity

pallets/duniter-wot/src/tests.rs

@@ -155,6 +155,18 @@ fn test_new_idty_validation() {
                 WotDiff::AddLink(2, 6)
             ]
         );
+
+        // After PendingMembershipPeriod, Ferdie identity should not expire
+        run_to_block(6);
+        assert_eq!(
+            Identity::identity(6),
+            Some(pallet_identity::IdtyValue {
+                next_creatable_identity_on: 0,
+                owner_key: 6,
+                removable_on: 0,
+                status: IdtyStatus::Validated,
+            })
+        );
     });
 }