Speed Up Tests

## Problem

Some tests take way too long to run, like PWM, some of those take ~10s
## Solution

Add `#error` like functionality so if part way through the test a fail is obvious then it exits and moves on.

Start by locating the PWM tests and the existing test failure-handling path in the repository. Determine how an obvious failure can stop the current test early and let the remaining tests continue; done means slow tests exit promptly after a failure without changing their pass/fail results.

Written by the indexing model from the issue text.