Add status_reply and error_reply helpers to Lua's global 'redis' table.

Author: amotzg

mockredis/script.py

@@ -47,7 +47,11 @@ def _call(*call_args):
                 response = client.call(*call_args)
             return self._python_to_lua(response)
 
-        lua_globals.redis = {"call": _call}
+        lua_globals.redis = {"call": _call,
+                             #  TODO wrap _call with try to implement "pcall": _pcall,
+                             "status_reply": lambda status: self._python_to_lua({"ok": status}),
+                             "error_reply": lambda error: self._python_to_lua({"err": error})
+                             }
         return self._lua_to_python(lua.execute(self.script), return_status=True)
 
     @staticmethod