Make test source contents available on test object

[rwaldron]

In addition to the contents property, is it possible to also include the "uncompiled" source of the test file?

[adrianheine]

Yes, please! I currently resort to stripping out the helpers afterwards to (massively) reduce parse time.

[adrianheine]

This should be doable now with #7 landed, right? I think for me it would be even better to have an option to not add the helpers in the first place.