unit testing and e2e testing with cesium

CesiumJS
1

Hey guys,
Thanks for your awesome tool! We love it here.
We are currently looking for a way to write unit tests for our code the uses cesium. We are writing mock objects for cesium so that we can test our code without actually initializing a cesium widget. This amounts to a rising number of mock objects for different things in cesium (collections, layers, scene and such..).
Is there a best practice for unit testing code that uses Cesium? Is there a framework for that?
And the second question is if there is any framework for e2e testing with Cesium which is a bit different from unit testing cause there we really want to init the cesium Widget and check that the stuff we want happend.

Thanks in advance,
Netanel.

2

Hi Netanel,

Why do you want to avoid initializing Cesium? Do you have a lot of fine-grained tests and you want them to run quickly?

In the Cesium unit tests, we do mock out a number of Cesium classes, but it is done on a case-by-case basis. We also have tests that only create a Scene, for example, instead of a Viewer widget (example).

Let us know if you write a Cesium testing library; we’re happy to list it as a Cesium plugin.

Patrick