test_pdb_collection_failure_is_shown() hangs in PyCharm 4.5

[omarkohl]

I tried running the py.test tests in PyCharm and test_pdb_collection_failure_is_shown() from the test_pdb.py module simply hangs and stops execution.

PyCharm disables output capturing (probably because they want to capture it themselves).

It can be easily reproduced without PyCharm:

py.test -s testing/test_pdb.py

Then one can type 'c' (continue in pdb) - even though no output is shown regarding pdb - and the test run finishes.

Following is the default command executed by PyCharm to run the test:

python3 /opt/pycharm-community-4.5.2/helpers/pycharm/pytestrunner.py -p pytest_teamcity testing/test_pdb.py --capture=sys

To verify that the problem is as described TWO things need to be done:

1. Remove the --capture=sys from the command (or replace with --capture=fd)
2. Comment out line 25 in pytestrunner.py args.append("-s") if "-s" not in args else None

This issue was originally reported/discussed on the mailing list.

Other info (probably not relevant):

• Issue found on master (commit ae28e4b)
• OS: Ubuntu 15.04
• Java version Oracle JRE 1.8.0_25
• PyCharm 4.5.2
• Python version 3.4.3

[Cephlin]

Bump.

Has anyone else experienced this or fixed this?

It's hanging for me too and it's driving me nuts.

[RonnyPfannschmidt]

im not aware of a core dev using pycharm - and as far as i can tell the pycharm integration breaks things there

[nicoddemus]

Actually, I use PyCharm. 😁

But I recall someone fixing running testing/test_pdb.py with -s recently. Which pytest version does this happen?

[Cephlin]

I'll give it a go and report back.

[nicoddemus]

Closing for now; we will be happy to re-open this once we get more information.