I once had a SW interview with a job that had a 2-hour long personality test. No tech questions. Just random questions to test my personality. It started out simple, like 'what was the last book you read' to more in-depth situations that had nothing to do with the job. The manager interviewing me (who admit he basically just started managing a month prior) told me he just read a 'great book on management' and wanted…
Two years ago, I had a similar experience with Chainlink. I underwent hours of interviews and completed an extensive work assignment, only to be offered the job _after a personality test_.
Simultaneously, I interviewed at a startup. There, I spent about an hour discussing my experience and providing feedback on their current system with the person who would become my manager.
I chose the startup, and it has been the best job decision I've ever made.
Personality tests can disclose a lot of personal information. It's unclear where this data might end up or who might have access to it. I detest this practice and consider it a major red flag.
(edit: typos)