Real testing experience and examples

Hello everyone!
I'm pretty new to writing tests in Unity but I really want to start adding tests to my projects becouse on my last job we had manual testing nightmare

And It just interesting for me to see some real project with tests integrates.
Are there any open source projects with tests?

Or maybe someone could share own expirience of writing tests in Unity?

 

Hey, you can take a look at AltUnity Tester, an open source test automation framework for Unity apps.

This section form the documentation will walk you trough the setup and give you on overview about how this tools works: https://altom.gitlab.io/altunity/altunitytester/pages/get-started.html#get-started

You'll find some example test projects (with tests written in C#, Python or Java) which are also open source: https://altom.gitlab.io/altunity/altunitytester/pages/examples.html

 

Here would be my main takeaways from real testing experience:

1. Write as much as feasible as plain C# code, and test it like you'd test any C# code.
2. To make Unity code (e.g. MonoBehaviours) testable, you'll really want to use some dependency injection framework, e.g. Zenject. This is an excellent talk on the subject (including notes about testing): Unity Architecture in Pokémon Go
3. Using a mocking framework like NSubstitute or Moq will be very useful, especially if you have DI in use. However, I'm not aware of a way to make these work in player tests, so you'll have to run them in the Editor (they can still be play mode tests, though).
4. High level tests including Unity code will inherently be asynchronous, and my experience is that the difficulty of figuring out why they started getting flaky (they will at some point) is your worst enemy. You'll want to write your tests in a way where it's easy to figure out what was happening when things failed. This was my main motivation to write Responsible, which includes a small project with example tests that I tried to make as realistic as possible, while still keeping the sample project very small and easy to understand.