Test if assertRaise raises an error that there is a mistake if no error is raised (this actually makes sense)

Author: benediktjohannes

Lib/wsgiref/handlers.py

@@ -264,8 +264,6 @@ def _convert_string_type(self, value, title, *, name):
         """Convert/check value type."""
         if type(value) is str:
             regex = (_name_disallowed_re if name else _value_disallowed_re)
-            if regex.search(value):
-                raise ValueError("Control characters not allowed in headers and values")
             return value
         raise AssertionError(
             "{0} must be of type str (got {1})".format(title, repr(value))