Question

How can I drop into pdb inside a funcargs function? And how can I see output from print statements in funcargs functions?

---

My original question included the following, but it turns out I was simply instrumenting the wrong funcarg. Sigh.

I tried:

print "hi from inside funcargs"

invoking with and without -s.

I tried:

import pytest
pytest.set_trace()

And:

import pdb
pdb.set_trace()

And:

raise "hi from inside funcargs"

None produced any output or caused a test failure.

Answer 1

To debug a funcarg:

def pytest_funcarg__myfuncarg(request):
    import pytest
    pytest.set_trace()
    ...

def test_function(myfuncarg):
    ...

Then:

python -m pytest test_function.py

As Ronny answered, to see output from a funcarg, pytest -s works.