test(cloud-function): cover proxyBSA request handling - #513
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Exercise the BSA handler end-to-end through the real router: method checks, `/pong/get` validation and `plusAvailable`, `/pong/click` referer and signature checks, and `/pimg/` signature verification plus image proxying (headers, content-type allowlist, upstream errors). The dummy bucket doubles as the image host, so no request leaves the machine. Cases that would call BuySellAds are intentionally left out.
caugner
added this pull request to stack #515
September 9, 2026 10:18
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Description
Add
cloud-function/src/handlers/proxy-bsa.test.js, exercising the BSA handler end-to-end through the real router:/pong/paths./pong/get: body validation andplusAvailablederived from the viewer country./pong/click: referer and code signature checks./pimg/: signature verification, image proxying with hardened headers, content-type allowlist (refuses SVG), uncached upstream errors.Motivation
Make it safer to auto-merge Dependabot bumps by covering
proxy-bsa.js, which was the least-tested request handler (22% line coverage). Its ad and image proxying runs on every page view.Additional details
The dummy bucket from
proxy-helpers.jsdoubles as the image host, so no request leaves the machine. Cases that would call BuySellAds (/pong/getwith valid zones, signed/pong/clickand/pong/viewed) are intentionally left out.Line coverage:
proxy-bsa.js22% -> 92%,internal/pong/image.js38% -> 92%,internal/pong/coding.js57% -> 96%.Related issues and pull requests