diff --git a/tf_authoritative_scanner/util_test.py b/tf_authoritative_scanner/util_test.py
new file mode 100644
index 0000000..8419ef8
--- /dev/null
+++ b/tf_authoritative_scanner/util_test.py
@@ -0,0 +1,9 @@
+import tf_authoritative_scanner.util as util
+
+
+def test_remove_leading_trailing_newline():
+    assert util.remove_leading_trailing_newline("") == ""
+    assert util.remove_leading_trailing_newline("a") == "a"
+    assert util.remove_leading_trailing_newline("a\n") == "a"
+    assert util.remove_leading_trailing_newline("\na") == "a"
+    assert util.remove_leading_trailing_newline("a\nb") == "a\nb"