Unit testing framework for ESP8266

Question

is there any way to unit test my classes written in c++ for ESP8266 Arduino platform? I really cannot find anything related material on the internet. I thought a widely used c++ unit testing library will work, but arduino is different as it has no try-catch blocks (thus exceptions) and other disadvantages compared to standard c++ etc etc.

What i need is simple: some assertion library, structuring capabilities (suites,test cases,...) and some kind of mocking and checking whether a method was called or not. Can anybody help?

i've not seen one, but you could write one for us. it's not as needed for arduino as in JS (where they are a huge deal) because the types tend to reduce runtime surprises. — dandavis, Jan 11 '18 at 04:27
That's what I am about to do. But I still need to get some c++ wisdom before doing it. — zak, Jan 21 '18 at 00:31

Ian · Answer 1 · 2021-04-21T20:48:54.800

2

I've just completed writing a fairly extensive unit testing library called arduino_ci, and I've placed a decent writeup as an answer to a related question.

It doesn't offer the "was this method called" functionality you are asking for, but everything (including pin values and serial IO) is (or can be) mocked.

A few examples:

The DoSomething example library shown above, used to test arduino_ci itself
A practical example, testing a Queue implementation
A complex example, simulating a library that controls an interactive device over a SoftwareSerial connection as part of the Adafruit FONA library

edited Apr 21 '21 at 20:48

answered Mar 07 '18 at 22:11

Ian

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Update: this is now available as a GitHub action https://github.com/marketplace/actions/arduino_ci – Ian Apr 21 '21 at 20:49

Unit testing framework for ESP8266

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