diff --git a/testdata/01/01.txt b/testdata/01/01.txt
new file mode 100644
index 0000000..257cc56
--- /dev/null
+++ b/testdata/01/01.txt
@@ -0,0 +1 @@
+foo
diff --git a/testdata/01/011.txt b/testdata/01/011.txt
new file mode 100644
index 0000000..5716ca5
--- /dev/null
+++ b/testdata/01/011.txt
@@ -0,0 +1 @@
+bar
diff --git a/testdata/01/sub/010.txt b/testdata/01/sub/010.txt
new file mode 100644
index 0000000..257cc56
--- /dev/null
+++ b/testdata/01/sub/010.txt
@@ -0,0 +1 @@
+foo