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I'm working on a presentation about python testing options, and one of the technologies I want to demo is pytest. I'm planning to do the presentation from an jupyter/ipython notebook. Ideally I'd like to be able to define a test function in a cell and then use pytest to run just that function; that way I can demonstrate individual features of pytest, etc.
Is there an existing way to do this? None of the interactive features I saw in the pytest api seem to fit the bill, but I'm certainly no pytest expert. I'd be happy to write a plugin to do it, so any advice on the best approach in that direction would be great.
I did see pytest-ipynb, but it does not seem to do what I need. If that assessment is wrong, advice on how to use that would be great, too.
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This small pytest plugin allows it to discover and run tests written inside ipython notebook cells. It works by examining notebook global scope, putting it into a module object and passing it to pytest for futher processing. No temporary files or bytecode hacks.
Running pytest We can run a specific test file by giving its name as an argument. A specific function can be run by providing its name after the :: characters. Markers can be used to group tests. A marked grouped of tests is then run with pytest -m .
Inside the Notebook. When you open a new Jupyter notebook, you'll notice that it contains a cell. Cells are how notebooks are structured and are the areas where you write your code. To run a piece of code, click on the cell to select it, then press SHIFT+ENTER or press the play button in the toolbar above.
There is a similar module that looks very mature: https://github.com/chmp/ipytest
It is referenced in the module developed by @akaiola and is more active and regularly updated / maintained.
Here is an example from the Github repository (https://github.com/chmp/ipytest/blob/master/Example.ipynb)
And another one I have created recently
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