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golemparts / rppal

A Rust library that provides access to the Raspberry Pi's GPIO, I2C, PWM, SPI and UART peripherals.
MIT License
1.2k stars 94 forks source link

Stubbing? #27

Open Aehmlo opened 5 years ago

Aehmlo commented 5 years ago

I'd like to be able to enable a stub feature (or whatever) and be able to use rppal GPIO functions on CI (which obviously isn't a Raspberry Pi). I currently implement this myself, but it'd be great to have this capability upstream (and thereby reduce the surface area of my own code).

golemparts commented 5 years ago

Thanks for the suggestion! Mocking the various peripherals in software has crossed my mind as well, since it would allow me to finally add somewhat meaningful tests. I've held off on working on it so far, because rppal wasn't feature-complete until recently. Now that I've finished adding support for the final peripheral (UART), adding mocking for all peripherals through a feature flag would fit nicely on the roadmap to v1.0.0. I'll add it to the feature request list as something to work on after the upcoming 0.11.2 release.

Aehmlo commented 5 years ago

If you'd like a hand with it, I'd be happy to help out!

golemparts commented 5 years ago

Thanks, I appreciate the offer! I'm not quite ready to dive into this right now, but I would like to consider the relevant implementation details beforehand to keep them consistent across all peripherals, especially with the large amount of changes required throughout the entire project, so I'll hold off on asking for PRs for now. I'll definitely contact you if I need a hand when this moves to active development, or to discuss the proposed implementation.

JohnRudolfLewis commented 4 years ago

Any update on this? I would really like to write unit tests for my code that uses Gpio and other parts of rppal.

ryankurte commented 4 years ago

Hey, it's not directly rppal / doesn't cover all of rppal, however, where you're consuming embedded-hal traits implemented / exposed by rppal you may find dbrgn/embedded-hal-mock useful.