From 720f13d6942f6cd7e2ea82fc03d6156ab5d6f8ae Mon Sep 17 00:00:00 2001
From: pasta <pasta@dash.org>
Date: Fri, 15 Mar 2019 14:23:30 -0500
Subject: [PATCH] add a comment linking to xvfb documentation

---
 ci/test_unittests.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ci/test_unittests.sh b/ci/test_unittests.sh
index 9b0516a55..9c88ee0fc 100755
--- a/ci/test_unittests.sh
+++ b/ci/test_unittests.sh
@@ -22,6 +22,7 @@ cd build-ci/dashcore-$BUILD_TARGET
 
 if [ "$RUN_TESTS" = "true" -a "${DEP_OPTS#*NO_QT=1}" = "$DEP_OPTS" ]; then
   export DISPLAY=:99.0;
+  # Start xvfb if needed, as documented at https://docs.travis-ci.com/user/gui-and-headless-browsers/#Using-xvfb-to-Run-Tests-That-Require-a-GUI
   /sbin/start-stop-daemon --start --pidfile /tmp/custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :99 -ac;
 fi