Fix wrong logic for moving filedescriptors leading to closed stdin

With this fix, tests can now use /dev/null as stdin.

Fixes #2165

1 files changed, 1 insertions, 1 deletions

diff --git a/test/run b/test/run
index 9f560b20..8004be65 100755
--- a/test/run
+++ b/test/run
@@ -55,7 +55,7 @@ main() {
     fi
 
     ui_in="${root}/${dir}/ui-in"
-    [ ! -f $ui_in ] && ui_in="/dev/tty"
+    [ ! -f $ui_in ] && ui_in="/dev/null"
 
     number_tests=$(($number_tests + 1))
     touch in; cp in out