We refreshed Snapshots page, listing all of the tests for a given Site. Now, you can clearly see the test status (Scheduled, Testing, Verifying, Completed or Failed) on per-Snapshot and per Page and Test Profile combination basis.
See the progression and status of your tests as Calibre completes them.
If you want to know how a Snapshot was started (manually through the interface, through previously configured test scheduler or API integrations) or investigate test status, Snapshots page is the best place to find it