Cited as a reference · for some experience
EEVblog #588 - How To Do PCB Production Testing
Why people recommend it
Dave Jones tests an initial production batch of boards; cited for test traces brought out to the panel edge for functional testing before depanelling.
Watch for: panel-edge test traces from about 2:12
In their words
Here is an example from Dave Jones at the EEVblog:
DerStrom8 on electronics.stackexchange.com, Jun 2020. CC BY-SA.
The image was from Dave's video on testing an initial production batch.
acexa616 on electronics.stackexchange.com, Jan 2020. CC BY-SA.