default environment for source_test_helpers()

[jennybc]

The default environment for source_test_helpers() changed from the global environment to the test environment. This is noticeable when I step through test files interactively. Unless I do source_test_helpers(..., env = globalenv()), nothing I define in my helper files is actually available.

I liked the old way better, but maybe there are good reasons for the change? In which case, this would be good to put into NEWS.md.

[hadley]

The point was to make it consistent with the other source_*() functions. But I now think your problem should be resolved by devtools - could you please file an issue there? (if you haven't already)