test: debugging

Author: elhimov

.github/workflows/testing.yml

@@ -107,6 +107,9 @@ jobs:
       - name: Run regression tests
         run: make test
 
+      - name: Setup tmate session
+        uses: mxschmitt/action-tmate@v3
+
       - name: Run race tests
         run: make testrace
 

test_helpers/pool_helper.go

@@ -202,8 +202,9 @@ func SetInstanceRO(ctx context.Context, dialer tarantool.Dialer, connOpts tarant
 
 	req := tarantool.NewCallRequest("box.cfg").
 		Args([]interface{}{map[string]bool{"read_only": isReplica}})
-	if _, err := conn.Do(req).Get(); err != nil {
-		return err
+	if resp, err := conn.Do(req).Get(); err != nil {
+		// return err
+		return fmt.Errorf("%w: resp: %v", err, resp)
 	}
 
 	return nil