pytest-dev / pytest-dev/pytest-xdist
`addopts = --failed-first` causes "Different tests were collected" error
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Description
I suppose cache for each gateway is separate, that's why different gateways report tests in different order.
The --failed-first setting should be ignored when reporting tests to the master node.
$ python -V
Python 3.5.2
$ pip freeze | grep pytest
pytest==3.3.0
pytest-base-url==1.4.1
pytest-cov==2.5.1
pytest-django==3.1.2
pytest-forked==0.2
pytest-html==1.16.0
pytest-metadata==1.5.1
pytest-selenium==1.11.2
pytest-variables==1.7.0
pytest-xdist==1.20.1
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Research direction
Reproduce the failure with Python 3.5.2, pytest 3.3.0, pytest-xdist 1.20.1, and addopts = --failed-first across multiple gateways. Start by tracing how test collection is reported to the master node; done when --failed-first is ignored for that report and gateways no longer produce different collected-test orders.
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Assessment
- Tech stack
- python
- Domain
- distributed-systems, testing-qa
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100