Refactor python interpreter selection

diff --git a/ci/test.sh b/ci/test.sh
index 8451b91f9e5677eb24cbd7b19322f29c7e6e11ab..2c6f24f87d9cf218af223e49f43b0e2f8dcd9387 100755 (executable)
--- a/ci/test.sh
+++ b/ci/test.sh
@@ -31,7 +31,8 @@ else
 fi
 cd graphviz-${GV_VERSION}
 if command -v python3; then
-    python3 -m pytest --junitxml=report.xml tests
+    python=python3
 else
-    python2 -m pytest --junitxml=report.xml tests
+    python=python2
 fi
+$python -m pytest --junitxml=report.xml tests