In pytest, how can I figure out if a test failed? (from "request")

Question

I'm using Selenium with PYTEST to test a site. I would like to take a screenshot of the page whenever a test fails (and only when it fails).

Is there a way that I can do this? The docs are quiet when it comes to this (or I can't find it). I would assume that it would be something like

request.function.failed

and it would return a boolean or something.

This is what I wanted to do:

@pytest.fixture()
def something(request):
    if request.function.failed:
        print "I failed"

This would be added to a finalizer, of course. Can it be done? Using pytest 2.3.3

Thanks.

Answer 1

It can be done, not directly though. I just added an example to the docs. It probably makes sense to makes this easier by default, i.e. without requiring the use of a conftest.py hook. If you agree, please file an issue.

Answer 2

I had to do something similar on a per-module level. After examining the existing solutions I was a little surprised by their complexity. Here's an approach I came up with to address this issue:

import pytest


@pytest.fixture(scope="module", autouse=True)
def failure_tracking_fixture(request):
    tests_failed_before_module = request.session.testsfailed
    yield
    tests_failed_during_module = request.session.testsfailed - tests_failed_before_module

It can be tweaked to do what you want by making the fixture a function-level one.

Hope this helps!