From 8fb5a0cecc0bedfefc43f1f60629f4e4a4d5a7c1 Mon Sep 17 00:00:00 2001
From: Magnus Jacobsson <magnus.jacobsson@berotec.se>
Date: Thu, 10 Sep 2020 18:47:01 +0200
Subject: [PATCH] Unset the DISPLAY environment variable in gvedit usage
 test_1813

This ensures that the test fails instead of hanging if print usage and
exit fails and the program continues and tries to open the display.
---
 rtest/test_regression.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rtest/test_regression.py b/rtest/test_regression.py
index 8feb59cc8..2fbc48b2e 100644
--- a/rtest/test_regression.py
+++ b/rtest/test_regression.py
@@ -323,7 +323,10 @@ def test_1813():
     https://gitlab.com/graphviz/graphviz/-/issues/1813
     '''
 
+    environ_copy = os.environ.copy()
+    environ_copy.pop('DISPLAY', None)
     output = subprocess.check_output(['gvedit', '-?'],
+      env=environ_copy,
       universal_newlines=True)
 
     assert 'Usage' in output, 'gvedit -? did not show usage'
-- 
2.40.0