diff --git a/amend/tests/003-lex-command/input b/amend/tests/003-lex-command/input
new file mode 100644
index 0000000..b9ef231
--- /dev/null
+++ b/amend/tests/003-lex-command/input
@@ -0,0 +1,6 @@
+this_identifier_is_not_assert
+NEITHER_IS_THIS_123
+but_the_next_one_is
+assert
+next_one_is_not_an_identifier
+12not_an_identifier