> Where possible, and where it makes sense, you should try to test as much as possible on your host machine, not on the target device.
When I have tried this I have encountered multiple problems, first that the Rust test framework requires std, making it convoluted writing test code – but when working around that using conditional compilation, I run into other things like the `esp-hal` depending on crates that won't compile on the host.
This is a constant issue for me in every facet of embedded development - with the sole exception of devices that can easily be tested in a qemu environment.
I would also love to hear that the authors of this book suggest.
awesome to see this under espressif.com! that's so fantastic.
not to the point here, but i wonder what Zephyr would have been like if Rust had been more of a thing at the time. that's not really possible, as from my understanding it derived from Wind River Systems' donated Rocket OS, which i think predates Rust (which is not a new language!). still an interesting what if to me: zephyr seems to be the embedded os with the best wireless support by a country mile, have a lot of companies targeting it (often alas forking it rather than going upstream): it holds my interest the most.
> Where possible, and where it makes sense, you should try to test as much as possible on your host machine, not on the target device.
When I have tried this I have encountered multiple problems, first that the Rust test framework requires std, making it convoluted writing test code – but when working around that using conditional compilation, I run into other things like the `esp-hal` depending on crates that won't compile on the host.
What is the recommended way to test on the host?
https://sans-io.readthedocs.io/how-to-sans-io.html
Keeping all of the actual hardware/network/io interface code separate really makes writing unit tests and porting to different computers much simpler
I would also love to hear that the authors of this book suggest.
not to the point here, but i wonder what Zephyr would have been like if Rust had been more of a thing at the time. that's not really possible, as from my understanding it derived from Wind River Systems' donated Rocket OS, which i think predates Rust (which is not a new language!). still an interesting what if to me: zephyr seems to be the embedded os with the best wireless support by a country mile, have a lot of companies targeting it (often alas forking it rather than going upstream): it holds my interest the most.