Resolve WES-187 "Unit tests account and system"

Assets/Architecture/Tests/EditMode/SystemControllerTests.cs

@@ -0,0 +1,48 @@
+using NUnit.Framework;
+using System.Collections.Generic;
+using UnityEngine.SceneManagement;
+
+/// <summary>
+/// Test the SystemController class
+/// </summary>
+[TestFixture]
+public class SystemControllerTests
+{
+    [Test]
+    public void Test_SystemController_GetInstance()
+    {
+        Assert.IsNotNull(SystemController.GetInstance());
+    }
+
+    [Test]
+    public void Test_GetSceneIndex_InvalidScene()
+    {
+        Assert.AreEqual(-1, SystemController.GetSceneIndex("a/non/existing/scene"));
+    }
+
+    [Test]
+    public void Test_GetSceneIndex_ValidScene()
+    {
+        List<string> scenes = new List<string>()
+        {
+            "Common/Scenes/Boot",
+            "Common/Scenes/MainMenuScreen",
+            "Common/Scenes/CoursesMenuScreen",
+            "Common/Scenes/ListCoursesScreen",
+            "Common/Scenes/ListMinigamesScreen",
+            "Common/Scenes/CourseActivityScreen",
+            "Common/Scenes/MinigameActivityScreen",
+            "Common/Scenes/ThemeSelectionScreen",
+            "Common/Scenes/SettingsScreen",
+            "Accounts/Scenes/UserCreationScreen",
+            "Accounts/Scenes/ChangeUserScreen",
+            "Accounts/Scenes/UserProgressScreen",
+            "Courses/Scenes/CourseScreen",
+            "SpellingBee/Scenes/SpellingBeeGame",
+            "Hangman/Scenes/HangmanGame",
+            "JustSign/Scenes/JustSignGame",
+        };
+        Assert.AreEqual(SceneManager.sceneCountInBuildSettings, scenes.Count);
+        // Testing wether the names and indices are correct needs to be done in PlayMode
+    }
+}