Can we run PyTest on are packages with this?

[dreamer-coding]

Is it possible to write test cases in Python for a Python extension written language XYZ using something like PyTest to validate the functionality in the extensions using Meson-Python layer?

[rgommers]

Sure. This question isn't very related to meson-python. meson-python lets you install Python packages built with Meson. If that package has pytest-compatible tests, then yes you can run pytest.

The language that a package is written in shouldn't matter here, as long as the package builds fine. E.g., SciPy has extension modules in C, C++, Cython and Fortran. They all have tests written in Python.

[rgommers]

Generally, yes. But again, the "create Python bindings for the C code is unrelated to meson-python. You'll need to create such bindings with the Python C API (see https://docs.python.org/3/extending/index.html), possibly with the use of a tool like Cython.

Once you have that, you can write pytest tests, and meson-python can be used to package/install.

[rgommers]

Here is a toy example using the Python C API: https://github.com/mesonbuild/meson-python/tree/main/tests/packages/purelib-and-platlib

And here is one that also uses Cython (the .pyx files): https://github.com/mesonbuild/meson-python/tree/main/tests/packages/complex

[dreamer-coding]

How about this let's assume I use this to write a Python extinction and the libraries I'm writing this for happen to use wrap files. Does this work?

[dnicolodi]

How about you read the documentation, try it out, and ask specific questions when you encounter a problem?

[dreamer-coding]

Sure, I just happened to have the perfect project to try it out for myself.