diff --git a/tests/test_types.sh b/tests/test_types.sh
index 9907966..d61302f 100644
--- a/tests/test_types.sh
+++ b/tests/test_types.sh
@@ -71,4 +71,14 @@ function shunittest_hash_values
     	return 1
     fi
     return $?
-}
\ No newline at end of file
+}
+
+function shunittest_boolean_no_optarg
+{
+    cmdarg_purge
+    cmdarg 'b' 'boolean'
+    cmdarg_parse -b something
+    cmdarg_dump
+    [[ "${cmdarg_cfg['boolean']}" == "true" ]] || return 1
+    [[ "${cmdarg_argv[0]}" == "something" ]] || return 1
+}