[rlam2x51]

I guess you need control over both cable endings. You can buy dedicated cable testers like https://treedix.com/products/treedix-usb-cable-tester-usb-c-...

[zimpenfish]

I have enjoyed my Treedix - now almost every cable I have has coloured labels for what it supports and what ends it has (handy when you're in a rush.)

On the downside, it has highlighted what a cowboy industry manufacturing USB-C cables is.