yanglint TEST of option --in-format
diff --git a/tools/lint/tests/data/modleaf.dxml b/tools/lint/tests/data/modleaf.dxml
new file mode 100644
index 0000000..408936a
--- /dev/null
+++ b/tools/lint/tests/data/modleaf.dxml
@@ -0,0 +1 @@
+<lfl xmlns="urn:yanglint:modleaf">7</lfl>