Make connection_or_connect() mockable

src/or/connection_or.c

@@ -1174,10 +1174,10 @@ connection_or_notify_error(or_connection_t *conn,
  *
  * Return the launched conn, or NULL if it failed.
  */
-or_connection_t *
-connection_or_connect(const tor_addr_t *_addr, uint16_t port,
-                      const char *id_digest,
-                      channel_tls_t *chan)
+
+MOCK_IMPL(or_connection_t *,
+connection_or_connect, (const tor_addr_t *_addr, uint16_t port,
+                        const char *id_digest, channel_tls_t *chan))
 {
   or_connection_t *conn;
   const or_options_t *options = get_options();

src/or/connection_or.h

@@ -37,9 +37,10 @@ void connection_or_connect_failed(or_connection_t *conn,
                                   int reason, const char *msg);
 void connection_or_notify_error(or_connection_t *conn,
                                 int reason, const char *msg);
-or_connection_t *connection_or_connect(const tor_addr_t *addr, uint16_t port,
-                                       const char *id_digest,
-                                       channel_tls_t *chan);
+MOCK_DECL(or_connection_t *,
+          connection_or_connect,
+          (const tor_addr_t *addr, uint16_t port,
+           const char *id_digest, channel_tls_t *chan));
 
 void connection_or_close_normally(or_connection_t *orconn, int flush);
 void connection_or_close_for_error(or_connection_t *orconn, int flush);