7. Scene Validation Test

Learning Objectives

Exercise

1. Create ValidationTest.cs file with a single namespace and two classes SceneValidationTests and GameplayScenesProvider.
2. In the Tests class create SaraAndWandArePresent test to check that "Sara Variant" and "Wand" game objects are not null.
3. In the Fixture class

   GameplayScenesProvider

   implement

   IEnumerable<string>

   and in generator method yield all scenes from EditorBuildSettings.scenes.
4. Use

   TestFixture

   and TestFixtureSource annotations on SceneValidationTests class.
5. Create a new Empty Scene and attach it to

   EditorBuildSettings

   to verify if tests are created dynamically.

Hints

• TestFixture

  and

  TestFixtureSource

  NUnit annotations require Test Class to be present inside Namespace.
• To attach a scene to

  EditorBuildSettings

  , you need to create a new Scene, and then add it to File > Build Settings.

Solution

ValidationTests.cs

using System.Collections;using System.Collections.Generic;using NUnit.Framework;using UnityEditor;using UnityEngine;using UnityEngine.SceneManagement;using UnityEngine.TestTools;namespace ValidationTests{    [TestFixture]    [TestFixtureSource(typeof(GameplayScenesProvider))]    public class SceneValidationTests    {        private readonly string _scenePath;            public SceneValidationTests(string scenePath)        {            _scenePath = scenePath;        }                [OneTimeSetUp]        public void LoadScene()        {            SceneManager.LoadScene(_scenePath);        }                [UnityTest]        public IEnumerator SaraAndWandArePresent()        {            yield return waitForSceneLoad();            var wand = GameObject.Find("Wand");            var sara = GameObject.Find("Sara Variant");                        Assert.NotNull(wand, "Wand object exists");            Assert.NotNull(sara, "Sara object exists");        }                IEnumerator waitForSceneLoad()        {            while (!SceneManager.GetActiveScene().isLoaded)            {                yield return null;            }        }    }        public class GameplayScenesProvider : IEnumerable    {        public IEnumerator GetEnumerator()        {            foreach (var scene in EditorBuildSettings.scenes)            {                if (!scene.enabled || scene.path == null)                {                    continue;                }                    yield return scene.path;            }        }            IEnumerator IEnumerable.GetEnumerator()        {            return GetEnumerator();        }    }}