Some of already occurs issues are:

• Rate limit - we have a rate limit on function invocation and just viewing some function pages (which run all tests, connected and unconnected, for all implementation, connected and unconnected) may hit this rate limit.
• When viewing a page tests are invoked via synchronous web requests without using any job system, nor deduplication. First, expensive sync web requests on page view is already an antipattern. Second, user can not immediately see the result of a test, not even a cached one. Third, since request are synchronous, users with unstable internet connection may not see the correct result. Fourth, running tests on every page view of functions, without any backend job system nor deduplication, is prone to DoS or DDoS.