Resolve WES-113 "Write tests"

Assets/Accounts/Scripts/AccountsScripts.asmdef

@@ -0,0 +1,17 @@
+{
+    "name": "AccountsScripts",
+    "rootNamespace": "",
+    "references": [
+        "GUID:6055be8ebefd69e48b49212b09b47b2f",
+        "GUID:df9d7b70293a2e14d9d3a018c3956f7a"
+    ],
+    "includePlatforms": [],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": [],
+    "versionDefines": [],
+    "noEngineReferences": false
+}

Assets/Accounts/Scripts/AccountsScripts.asmdef.meta

@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 1631ed2680c61245b8211d943c1639a8
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Accounts/Scripts/SystemController.cs

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+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+/// <summary>
+/// SystemController singleton
+/// </summary>
+public class SystemController
+{
+    /// <summary>
+    /// The instance controlling the singleton
+    /// </summary>
+    private static SystemController instance = null;
+
+    /// <summary>
+    /// Stack of the loaded scenes, used to easily go back to previous scenes
+    /// </summary>
+    private Stack<int> sceneStack = new Stack<int>();
+
+    /// <summary>
+    /// Get the instance loaded by the singleton
+    /// </summary>
+    /// <returns>SystemController instance</returns>
+    public static SystemController GetInstance()
+    {
+        // Create a new instance if non exists
+        if (instance == null)
+        {
+            instance = new SystemController();
+            instance.sceneStack.Push(SceneManager.GetActiveScene().buildIndex);
+        }
+        return instance;
+    }
+
+    /// <summary>
+    /// Load the scene and push on the stack
+    /// </summary>
+    /// <param name="scenePath">Path of the scene</param>
+    public void LoadNextScene(string scenePath)
+    {
+        LoadNextScene(SceneUtility.GetBuildIndexByScenePath(scenePath));
+    }
+
+    /// <summary>
+    /// Load the scene and push on the stack
+    /// </summary>
+    /// <param name="sceneIndex">Buildindex of the scene</param>
+    public void LoadNextScene(int sceneIndex)
+    {
+        sceneStack.Push(sceneIndex);
+        SceneManager.LoadScene(sceneIndex);
+    }
+
+    /// <summary>
+    /// Swap the current scene with the new scene on the stack
+    /// </summary>
+    /// <param name="scenePath">Path of the scene</param>
+    public void SwapScene(string scenePath)
+    {
+        SwapScene(SceneUtility.GetBuildIndexByScenePath(scenePath));
+    }
+
+    /// <summary>
+    /// Swap the current scene with the new scene on the stack
+    /// </summary>
+    /// <param name="sceneIndex">Buildindex of the scene</param>
+    public void SwapScene(int sceneIndex)
+    {
+        sceneStack.Pop();
+        LoadNextScene(sceneIndex);
+    }
+
+    /// <summary>
+    /// Go back to the previous scene and unload the current scene
+    /// </summary>
+    public void BackToPreviousScene()
+    {
+        sceneStack.Pop();
+
+        if (sceneStack.Count > 0) SceneManager.LoadScene(sceneStack.Peek());
+        else Application.Quit();
+    }
+
+    /// <summary>
+    /// Go back to a specific scene, unloading all the scenes on the way
+    /// </summary>
+    /// <param name="scenePath">Path of the scene</param>
+    public void BackToScene(string scenePath)
+    {
+        BackToScene(SceneUtility.GetBuildIndexByScenePath(scenePath));
+    }
+
+    /// <summary>
+    /// Go back to a specific scene, unloading all the scene on the way
+    /// </summary>
+    /// <param name="sceneIndex">Buildindex of the scene</param>
+    public void BackToScene(int sceneIndex)
+    {
+        while (0 < sceneStack.Count && sceneStack.Peek() != sceneIndex) sceneStack.Pop();
+
+        if (sceneStack.Count > 0) SceneManager.LoadScene(sceneStack.Peek());
+        else Application.Quit();
+    }
+}

Assets/Accounts/Scripts/SystemController.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: bf5ea73aa43049e45a0ad926db15f315
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: