1 files changed, 21 insertions, 0 deletions
diff --git a/tests/lex_error1.py b/tests/lex_error1.py
new file mode 100644
index 0000000..fec0282
--- /dev/null
+++ b/tests/lex_error1.py
@@ -0,0 +1,21 @@
+# lex_error1.py
+#
+# Missing t_error() rule
+
+import ply.lex as lex
+
+tokens = [
+    "PLUS",
+    "MINUS",
+    "NUMBER",
+    ]
+
+t_PLUS = r'\+'
+t_MINUS = r'-'
+t_NUMBER = r'\d+'
+
+
+
+lex.lex()
+
+