Update cherrpy to 17.4.2

lib/cherrypy/test/__init__.py

@@ -0,0 +1,24 @@
+"""
+Regression test suite for CherryPy.
+"""
+
+import os
+import sys
+
+
+def newexit():
+    os._exit(1)
+
+
+def setup():
+    # We want to monkey patch sys.exit so that we can get some
+    # information about where exit is being called.
+    newexit._old = sys.exit
+    sys.exit = newexit
+
+
+def teardown():
+    try:
+        sys.exit = sys.exit._old
+    except AttributeError:
+        sys.exit = sys._exit