1 files changed, 24 insertions, 0 deletions
diff --git a/third_party/ply/test/lex_error1.py b/third_party/ply/test/lex_error1.py
new file mode 100644
index 00000000..4508a808
--- /dev/null
+++ b/third_party/ply/test/lex_error1.py
@@ -0,0 +1,24 @@
+# lex_error1.py
+#
+# Missing t_error() rule
+
+import sys
+if ".." not in sys.path: sys.path.insert(0,"..")
+
+import ply.lex as lex
+
+tokens = [
+    "PLUS",
+    "MINUS",
+    "NUMBER",
+    ]
+
+t_PLUS = r'\+'
+t_MINUS = r'-'
+t_NUMBER = r'\d+'
+
+
+
+lex.lex()
+
+