Prevents stale signature values from leaking into the MD5 signing calculation, matching the news_service.py pattern. Adds a test that passes a stale signature in extra params and verifies the returned signature is freshly computed.
Prevents stale signature values from leaking into the MD5 signing calculation, matching the news_service.py pattern. Adds a test that passes a stale signature in extra params and verifies the returned signature is freshly computed.