August 2018
Beginner
160 pages
4h 8m
English
Content preview from pytest Quick Start Guide
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Last failed, failed first: --lf, --ff
Pytest always remembers tests that failed in previous sessions, and can reuse that information to skip right to the tests that have failed previously. This is excellent news if you are incrementally fixing a test suite after a large refactoring, as mentioned in the previous section.
You can run the tests that failed before by passing the --lf flag (meaning last failed):
λ pytest --lf tests/core...collected 6 items / 4 deselectedrun-last-failure: rerun previous 2 failures
When used together with -x (--maxfail=1) these two flags are refactoring heaven:
λ pytest -x --lf
This lets you start executing the full suite and then pytest stops at the first test that fails. You fix the code, and execute the same ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.