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ladislas / Bare-Arduino-Project

Start your Arduino projects right out of the box
MIT License
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Mocking SPI and hardware pins #57

Closed dolfandringa closed 4 years ago

dolfandringa commented 5 years ago

Related to #56: Is there a library or are there any examples of writing unittests that Mock some of the hardware arduino functions? I would for instance like to mock the digitalWrite/digitalRead/analogRead/pinMode functions, and also the SPI library, so I can write tests for code that depends on them, without actually needing an emulator or physical hardware connected. I really like the arduino_ci project for that specific part, but they have their own test runner in Ruby and use the native gcc instead of avr-gcc. Is something similar possible using avr-gcc?

ladislas commented 5 years ago

If you want to run the test without actual hardware, you won't be able to use avr-gcc. You'll need to compile using gcc to run the program for your computer (either macOS, Linux our Windows).

arduino-ci does provide SPI functions. I have never used it but the documentation seems pretty explicit:

https://github.com/ianfixes/arduino_ci/blob/master/REFERENCE.md#spi

The goal of arduino-ci is to allow you to write test that will run for real when compiled with avr-gcc and will run for tests when compiled with gcc.

Your goal as the developper is to structure your code so that it is testable. Don't be afraid to use C++ and OOP to make that easier.

ladislas commented 4 years ago

closing as there's not activity -- feel free to reopen if needed