Getting started with pytest Transcripts
Chapter: Test Functions
Lecture: Using test classes
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I'd like to show you how to group test together with classes. I don't often do it but a lot of other test frameworks use classes and you
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can use classes with pytest as well and some people really like to use them mostly for grouping. So I want to show you how that's done within our test
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card file. We have a handful of different equality tests. Here's these three equality tests. As an example for classes.
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Let's just grab these uh these test functions and put them in a class. So for a class we would say something like class test equality and then we can
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just put our our functions there. But they need to be methods so we will indent them for one. But then they also all have to start with self.
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So we'll stick a self everywhere. And I think that's it. Let's see if we can run it.
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So our tests have run let's do verbose and we can see that it's a little bit of a test node, different
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test node. So the test node name now has the class name in front of it and we can take that and run it individually.
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So if we say pytest and then plump that whole thing down, we can run one individual, let's make sure we did that with V, yep,
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ran that one individual test. So this is just sort of a grouping thing. If we can have other tests here. So if we had uh def test foo.
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The reason why you might want to do this is just to run the class. So if we do the entire funk file,
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we get everything including foo, But we can also just say I want to run all of the test equality, That one class full of tests.
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So that's handy. The when we get into fixtures, we can use fixtures at the class level, too. And that's another reason to use classes.
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But I just wanted to show you that. Yes, this is a way you can group tests with classes pretty easy.