[Test] Fix tests bug (#16)

This PR fixes the bug of debug_discipline_guard.

Co-authored-by: caozhou <caozhou@baai.ac.cn>

Author: Caozhou1995

tests/test_debug_discipline_guard.py

@@ -56,7 +56,7 @@ def test_failure_then_second_edit_blocked(self):
         result = g.check_pre(ctx2)
         assert result is not None
         assert result.action == "inject_msg"
-        assert "HYPOTHESIS" in result.message
+        assert "hypothesis" in result.message.lower()
 
     def test_non_py_files_not_blocked(self):
         """Edits to non-.py files are never blocked."""