Change BuildSettings before run Unit test in Play Mode

Questions & Answers
1

I need to create different builds of the project I’m working on.

My builds differs one from the other from some scenes. So I need to change them for each build.

The point is that I woud like to test some workflows of my project with the different builds settings. I’ve tryed something like this:

using NUnit.Framework;
using UnityEditor;

namespace Tests
{
    public class TestRunner 
    {
        private string oldScenePath;

        [SetUp]
        public override void Setup()
        {
            EditorBuildSettingsScene[] newScenes = EditorBuildSettings.scenes;
            oldScenePath = newScenes[3].path;
            newScenes[3].path = "scene/to/change.unity";
            EditorBuildSettings.scenes = newScenes;
        }

        [TearDown]
        public override void Teardown()
        {
            EditorBuildSettingsScene[] newScenes = EditorBuildSettings.scenes;
            newScenes[3].path = oldScenePath;
            EditorBuildSettings.scenes = newScenes;

        }

        [UnityTest]
        public override string Test()
        {
            //Make things
        }
    }
}

But this does not work, because SetUp is run during running mode, where I can not modify the EditorBuildSettings.

Any advice? Is it possible to make run a script before Unity enters in Play mode before running all the tests?

2

It sounds like you could use an IPrebuildSetup and IPostBuildCleanup for this.
https://docs.unity3d.com/Packages/com.unity.test-framework@1.1/manual/reference-setup-and-cleanup.html

You should be able to modify the EditorBuildSettings inside those Setup and Cleanup methods. Note that UnityEditor is not available when building for a player, so you will need to surround the EditorBuildSettings with #if UNITY_EDITOR, like in the example in the link.