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<p>PS: retweeting this to get more people trying it wouldn't be bad
either: <a class="moz-txt-link-freetext" href="https://twitter.com/nedbat/status/1194042245143552001">https://twitter.com/nedbat/status/1194042245143552001</a></p>
<p>Thanks! :)<br>
</p>
<div class="moz-cite-prefix">On 11/12/19 10:29 AM, Ned Batchelder
wrote:<br>
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cite="mid:5ac05ec7-8bfd-c297-537e-c24fc6061d71@nedbatchelder.com">
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<p>I just released coverage.py 5.0 beta 1. It has some big changes
since 4.5.x, so I need people to try it and tell me if it’s
ready. Please install <a
href="https://pypi.org/project/coverage/5.0b1/" rel="external"
moz-do-not-send="true">coverage.py 5.0 beta 1</a> and try it
in your environment.</p>
<p>I especially want to hear from you if you tried the earlier
alphas of 5.0. There have been some changes in the SQLite
database that were needed to make measurement efficient enough
for large test suites, but that hinder ad-hoc querying.</p>
<p>If you haven’t taken a look at coverage.py 5.0 yet, the big
change is the addition of “contexts.” These can record not just
that a line was executed, but something about why it was
executed. Any number of contexts can be recorded for a line.
They could be different operating systems, or versions of
Python, or the name of the test that was running. I think it
could enable some really interesting tooling.</p>
<p>If you are interested in recording test names as contexts, the
<a href="https://pypi.org/project/pytest-cov/" rel="external"
moz-do-not-send="true">pytest-cov</a> pytest plugin now has a
“--cov-context” option to do just that.</p>
<p>Contexts increase the data requirements, so data storage is now
a SQLite file rather than a JSON file. The summary of what’s new
in 5.0 is here: <a
href="https://coverage.readthedocs.io/en/latest/whatsnew5x.html"
rel="external" moz-do-not-send="true">Major changes in 5.0</a>.</p>
<p>Please try this. Soon 5.0 will be done, and people will begin
installing it unknowingly. I would really like to minimize the
turmoil when that happens.</p>
<p>Thanks,</p>
<p>--Ned.<br>
</p>
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