Little/no charging but alternator and battery test good

I'd been suspecting the alternator cable, especially after smelling what smelled like burnt insulation a few times since the problem began. The first few times I measured voltage at the alternator vs at the battery terminal, there seemed to be less than a 1V drop, perhaps slightly higher than it should be, but not enough I'd consider it conclusive. Today I tested resistance across the cable, and first was getting readings of 20 (!!) or more ohms. After pulling on the protective cover a bit trying to get a better reading, it started showing only about 0.8 ohms, but by that time I figured it was almost surely bad.

After replacing it, I'm getting 14.3V at the battery terminal, and it looks like the battery is going to stay charged.

Anyway, moral of the story is that "alternator testers" can show false negatives for a charging problem if the voltage is higher than nominal battery voltage but the current is minimal due to bad cable or bad alternator.

Update: Battery is not staying charged. It looks like the wear on the alternator cable might have been a symptom of a battery problem rather than the root cause. I've posted a follow-up question: Battery only charges with parallel load - why? recoverable, or replace? ... and indeed, the battery was bad.