From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sun, 25 Oct 2020 02:49:43 +0000 (-0700)
Subject: adjust installation test to work even if GV_VERSION is unset
X-Git-Tag: 2.46.0~20^2^2~11^2~9
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c341a455821b902b961e0310f7fe4cb0602d6c85;p=graphviz

adjust installation test to work even if GV_VERSION is unset

This test should now run correctly in users' development environments as well as
in CI. Related to #1851.
---

diff --git a/tests/regression_tests/installation/test_installation.py b/tests/regression_tests/installation/test_installation.py
index 7985eface..3c0877979 100644
--- a/tests/regression_tests/installation/test_installation.py
+++ b/tests/regression_tests/installation/test_installation.py
@@ -3,7 +3,16 @@ import subprocess
 import os
 
 def test_installation():
-    expected_version = os.environ['GV_VERSION']
+    expected_version = os.environ.get('GV_VERSION')
+
+    # If $GV_VERSION is not set, run the CI step that derives it. This will fail
+    # if the user is in a snapshot directory without Git installed, but assume
+    # they can live with that.
+    if expected_version is None:
+        ROOT = os.path.join(os.path.dirname(__file__), '../../..')
+        expected_version = subprocess.check_output(['python3',
+          'gen_version.py'], cwd=ROOT, universal_newlines=True).strip()
+
     actual_version_string = subprocess.check_output(
         [
             'dot',