1 files changed, 13 insertions, 0 deletions

diff --git a/tests/userprog/open-null.ck b/tests/userprog/open-null.ck
new file mode 100644
index 0000000..b4a3bcb
--- /dev/null
+++ b/tests/userprog/open-null.ck
@@ -0,0 +1,13 @@
+# -*- perl -*-
+use strict;
+use warnings;
+use tests::tests;
+check_expected ([<<'EOF', <<'EOF']);
+(open-null) begin
+(open-null) end
+open-null: exit(0)
+EOF
+(open-null) begin
+open-null: exit(-1)
+EOF
+pass;