Whats the fast way to make a change to a test and iterate to see if it now works?
The fastest way to develop a test is to not use compiled components in your test. If you can write a test without cross-compiling code you can modify the test in python/shell on the target and rerun it on the target directly. This of course also applies to the situation where you want to modify the python/shell parts of a test that has cross-compiled code. The point is, try to use the least amount of cross-compiled code to write your test as possible.