Personally, I'd rather use a bench multimeter + a set of breakout boards for all the sizes of USB A and B socket. That also lets you check the shield resistance is under 0.6 ohms, and the data pair resistance to confirm they are at least 28 AWG. If its got good low L and C ranges, you can also check if the data pair impedance is close to the 90 ohm spec.
High shield resistance or out of spec data pairs are key signs of a crappy cable that wont be picked up by testing the power pair resistance or voltage drop in circuit.