Document how to Ignore files/folder when running nbdev_test

[ADubinA]

I have a folder of experiments that don't want to be tested when I run nbdev_test.
Is there a way to ignore these files? I could add #|eval false to each line, in each notebook in that folder, but that's a lot of hassle.
Having a Directive to set this default at the beginning of the file will also work.

[hamelsmu]

Hi @ADubinA !

There are several ways to skip entire notebooks, so they are not run with nbdev_test:

Directory Level

Name your directory should have a leading underscore. for example, a notebook located at /_notest/foo.ipnyb will not be tested

Notebook Level

You can use the front matter (raw cell) in a notebook like this:

---
skip_exec: true
---

You can also set this option in a markdown cell like this

# Your notebook title
> Your notebook description
- skip_exec: true

[ADubinA]

By having the /_notest/ directory, it will also not be documented. Is there a way to have the directory documented, but not tested?

[seeM]

@ADubinA you can add an empty .nodoc or .notest file to directories that you want to disable documentation or tests. For example using touch /your/dir/.notest.

[ADubinA]

@seeM That's perfect! Thanks.

[jnareb]

The documentation also talks about using flags... but it is not documented how one can add tag to a cell (in nbdev1 it was # flag).

It looks like you can use nbdev_test --flags "slow fastai" to specify list of test flags (space separated) to run that are normally ignored; it is not explained if only those tests are run, or if it runs all tests that it would normally run in addition to tests with specified flags.

[aaronsgithub]

@jnareb I just found you can use the #|eval: false directive to have nbdev_test skip cells.

[jnareb]

@jnareb I just found you can use the #|eval: false directive to have nbdev_test skip cells.

But #| eval: false also affects what is included in the documentation. And it doesn't allow to split tests into categories, like slow tests, or tests requiring some additional package to be installed.

[evanlesmez]

I see the code block and output in my documentation still with #|eval: false
Would be nice to have test flag for cells though.
I did notice that regardless of #|eval: false or not, %time ... lines are ignored in nbdev_preview.

[pankaj-kvhld]

Is there a similar way of ignoring notebooks when generating docs?

[tmchartrand]

The documentation also talks about using flags... but it is not documented how one can add tag to a cell (in nbdev1 it was # flag).

I had the same question - looks like from the tests example that this is just an arbitrary directive, not sure why they picked a new name for it in this context!
https://github.com/fastai/nbdev/blob/cad0ffcafd46a482dbe96617bba5102653c1eafa/tests/directives.ipynb