Unit testing?

[tower120]

If bevy could support some form of unit-testing out of the box it would be nice.

For example, I have simulation as separate plugin/crate. And I imagine test process as : in that crate "test" make bevy::app, spawn several entities, attach systems, run n-cycles, and then verify that entities have desired values. And I mean native rust-tests.

[bjorn3]

I think you can build an app like normally, but only add the necessary plugins and not all default plugins like rendering and windowing. Then you can use .set_runner to define a custom runner that runs for the necessary amount of cycles and then returns and finally .run() it.

[tower120]

Maybe it worth mention that somewhere in the docs.... As a best practices for unit-testing...

I personally would like to use direct update calls instead of fiddling with runner.

[TheRawMeatball]

https://github.com/bevyengine/bevy/blob/main/tests/how_to_test_systems.rs

[tower120]

Hmm.... Thanks!