pytest expect fixture plugin, iteration 1

This is the first iteration that implements ‘expect’ as a fixture.

This is really the third attempt at an ‘expect()’ implementation that allows multiple failures per test.

  1. First attempt was a general solution that works with any test framework, but with a slightly clunky API. The main problem with it was that it required the test to call a final ‘assert_expectations()’ from the test code. If you forgot to call that function, the failures weren’t reported.
  2. Second attempt was a pytest plugin implementation that eliminated the need for the ‘assert_expectations()’ call in the test because it was called automatically. I wasn’t thrilled with this solution. But it works.
  3. In the solution I’m presenting in this post, I’m moving all of the code into one file and implementing ‘expect’ as a pytest fixture.

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pytest delayed assert / multiple failure plugin, iteration 1

In Delayed assert / multiple failures per test, I presented a first attempt at writing an ‘expect()’ function that will allow
a test function to collect multiple failures and not stop execution until the end of the test.

There’s one big thing about that method that I don’t like.
I don’t like having to call ‘assert_expectations()’ within the test.
It would be cool to push that part into a plugin.

So, even though this isn’t the prettiest code, here’s a first attempt at making this a plugin.

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pytest fixtures nuts and bolts

I’d like to wrap up this recent series of pytest fixture posts by presenting my version of some sort of reference.
Since this post is running a bit long, here are some links to the content buried in here.

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