diff --git a/test/lock_test.ok b/test/lock_test.ok
new file mode 100644
index 0000000..2c0f31b
--- /dev/null
+++ b/test/lock_test.ok
@@ -0,0 +1,8 @@
+acquired lock: 'long_name'
+launched first, locked by: long_name
+launched second, locked by: long_name
+leaving lock: 'long_name'
+acquired lock: 'shorter'
+waited, locked by: shorter
+leaving lock: 'shorter'
+waited more, locked by: