From 16079b9981e84437e79d5045d143120e96804520 Mon Sep 17 00:00:00 2001
From: Tim Head <betatim@gmail.com>
Date: Fri, 14 Sep 2018 21:04:06 +0200
Subject: [PATCH] Compare to empty string when start script test fails

---
 tests/venv/start/start-script/verify | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/venv/start/start-script/verify b/tests/venv/start/start-script/verify
index 8422ceba..b466ab08 100644
--- a/tests/venv/start/start-script/verify
+++ b/tests/venv/start/start-script/verify
@@ -1,7 +1,8 @@
 #!/bin/bash
 set -euo pipefail
 
-if [ "$TEST_START_VAR" != "var is set" ]
+# set value of TEST_START_VAR to empty string when it is not defined
+if [ "${TEST_START_VAR:-}" != "var is set" ]
 then
   echo "TEST_START_VAR is not set"
   exit 1