what makes a good automated test?
It’s really mostly about what the tester is trying to achieve. If you ask “what makes a good microscope”, you’d ask people that use them and get different answers. But they’d all be trying to use that tool to serve their purposes. Test automation is two words that are both lies, it’s just a fact checking tool, and you want it to check useful facts that merit the cost of it existing.
A good automated test serves the test strategy. Otherwise it’s a very limited check with a cost and unknown or little reason to be.