From b6efec7129d3d4f87e11c66886e8a4554ea79db3 Mon Sep 17 00:00:00 2001
From: "d.kovalenko" <dmitry.lipetsk@gmail.com>
Date: Sun, 21 Jun 2026 18:25:54 +0300
Subject: [PATCH] PostgresNode::pgbench is updated (assert)

- [add] assert isinstance(proc, subprocess.Popen)
---
 src/node.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/node.py b/src/node.py
index bb50296b..aac4893c 100644
--- a/src/node.py
+++ b/src/node.py
@@ -1926,8 +1926,10 @@ def pgbench(self,
         # should be the last one
         _params.append(dbname)
 
-        proc = self._os_ops.exec_command(_params, stdout=stdout, stderr=stderr, wait_exit=True, get_process=True)
+        proc = self._os_ops.exec_command(_params, stdout=stdout, stderr=stderr, get_process=True)
 
+        # [2026-06-21] It is so
+        assert isinstance(proc, subprocess.Popen)
         return proc
 
     def pgbench_with_wait(self,