From 457b3edd444bfc0e226c692bf595cd4ba1fe61ee Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Sat, 24 Aug 2024 10:45:45 +0800
Subject: [PATCH] test_client: make master termination easier to debug

---
 artiq/test/test_client.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/artiq/test/test_client.py b/artiq/test/test_client.py
index aa6cae692..ac2b8c741 100644
--- a/artiq/test/test_client.py
+++ b/artiq/test/test_client.py
@@ -44,7 +44,8 @@ class TestClient(unittest.TestCase):
                                         self.device_db_path, *args], encoding="utf8", env=get_env(),
                                        text=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
         while self.master.stdout.readline().strip() != "ARTIQ master is now ready.":
-            pass
+            if self.master.poll() is not None:
+                raise IOError("master terminated unexpectedly")
 
     def check_and_terminate_master(self):
         while not ("test content" in self.master.stdout.readline()):