Add test files.
diff --git a/src/testdir/test90.ok b/src/testdir/test90.ok
new file mode 100644
index 0000000..9a8e7fe
--- /dev/null
+++ b/src/testdir/test90.ok
@@ -0,0 +1,6 @@
+start:
+test for empty string: ok
+test for 1 char: ok
+test for 3 chars: ok
+test for contains meta char: ok
+test for contains non-ascii char: ok