[Settings Tests] Migrate General Settings tests (#5753)

* added MSTest project

* migrated general settings tests

* enabled settings tests run in the build pipeline

* added tests

* move relay command class to separate file

* added a foldername parameter for general settings view model

src/core/Microsoft.PowerToys.Settings.UI.Lib/Helpers/Observable.cs

@@ -0,0 +1,27 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib.Helpers
+{
+    public class Observable : INotifyPropertyChanged
+    {
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        protected void Set<T>(ref T storage, T value, [CallerMemberName] string propertyName = null)
+        {
+            if (Equals(storage, value))
+            {
+                return;
+            }
+
+            storage = value;
+            OnPropertyChanged(propertyName);
+        }
+
+        protected void OnPropertyChanged(string propertyName) => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.Lib/ViewModels/Commands/ButtonClickCommand.cs

@@ -0,0 +1,34 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Windows.Input;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib.ViewModels.Commands
+{
+    public class ButtonClickCommand : ICommand
+    {
+        private readonly Action _execute;
+
+        public ButtonClickCommand(Action execute)
+        {
+            this._execute = execute;
+        }
+
+        // Occurs when changes occur that affect whether or not the command should execute.
+        public event EventHandler CanExecuteChanged;
+
+        // Defines the method that determines whether the command can execute in its current state.
+        public bool CanExecute(object parameter)
+        {
+            return true;
+        }
+
+        // Defines the method to be called when the command is invoked.
+        public void Execute(object parameter)
+        {
+            _execute();
+        }
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.Lib/ViewModels/Commands/RelayCommand.cs

@@ -0,0 +1,34 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Windows.Input;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib.ViewModels.Commands
+{
+    public class RelayCommand : ICommand
+    {
+        private readonly Action _execute;
+        private readonly Func<bool> _canExecute;
+
+        public event EventHandler CanExecuteChanged;
+
+        public RelayCommand(Action execute)
+            : this(execute, null)
+        {
+        }
+
+        public RelayCommand(Action execute, Func<bool> canExecute)
+        {
+            _execute = execute ?? throw new ArgumentNullException(nameof(execute));
+            _canExecute = canExecute;
+        }
+
+        public bool CanExecute(object parameter) => _canExecute == null || _canExecute();
+
+        public void Execute(object parameter) => _execute();
+
+        public void OnCanExecuteChanged() => CanExecuteChanged?.Invoke(this, EventArgs.Empty);
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.Lib/ViewModels/Commands/RelayCommand`1.cs

@@ -0,0 +1,36 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Windows.Input;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib.ViewModels.Commands
+{
+
+    public class RelayCommand<T> : ICommand
+    {
+        private readonly Action<T> execute;
+
+        private readonly Func<T, bool> canExecute;
+
+        public event EventHandler CanExecuteChanged;
+
+        public RelayCommand(Action<T> execute)
+            : this(execute, null)
+        {
+        }
+
+        public RelayCommand(Action<T> execute, Func<T, bool> canExecute)
+        {
+            this.execute = execute ?? throw new ArgumentNullException(nameof(execute));
+            this.canExecute = canExecute;
+        }
+
+        public bool CanExecute(object parameter) => canExecute == null || canExecute((T)parameter);
+
+        public void Execute(object parameter) => execute((T)parameter);
+
+        public void OnCanExecuteChanged() => CanExecuteChanged?.Invoke(this, EventArgs.Empty);
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.Lib/ViewModels/GeneralViewModel.cs

@@ -5,15 +5,12 @@
 using System;
 using System.Diagnostics;
 using System.Runtime.CompilerServices;
-using Microsoft.PowerToys.Settings.UI.Helpers;
-using Microsoft.PowerToys.Settings.UI.Lib;
+using System.Text.Json;
+using Microsoft.PowerToys.Settings.UI.Lib.Helpers;
 using Microsoft.PowerToys.Settings.UI.Lib.Utilities;
-using Microsoft.PowerToys.Settings.UI.ViewModels.Commands;
-using Microsoft.PowerToys.Settings.UI.Views;
-using Windows.ApplicationModel.Resources;
-using Windows.UI.Xaml;
+using Microsoft.PowerToys.Settings.UI.Lib.ViewModels.Commands;
 
-namespace Microsoft.PowerToys.Settings.UI.ViewModels
+namespace Microsoft.PowerToys.Settings.UI.Lib.ViewModels
 {
     public class GeneralViewModel : Observable
     {
@@ -23,26 +20,25 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
 
         public ButtonClickCommand RestartElevatedButtonEventHandler { get; set; }
 
-        private ResourceLoader loader = ResourceLoader.GetForViewIndependentUse();
 
-        public string RunningAsUserDefaultText { get; private set; }
+        public Func<string, int> UpdateUIThemeCallBack { get; }
 
-        public string RunningAsAdminDefaultText { get; private set; }
+        public Func<string, int> SendConfigMSG { get; }
 
-        private bool _packaged = false;
-        private bool _startup = false;
-        private bool _isElevated = false;
-        private bool _runElevated = false;
-        private bool _isAdmin = false;
-        private bool _isDarkThemeRadioButtonChecked = false;
-        private bool _isLightThemeRadioButtonChecked = false;
-        private bool _isSystemThemeRadioButtonChecked = false;
-        private bool _autoDownloadUpdates = false;
+        public Func<string, int> SendRestartAsAdminConfigMSG { get; }
 
-        public GeneralViewModel()
+        public Func<string, int> SendCheckForUpdatesConfigMSG { get; }
+
+        public readonly string RunningAsUserDefaultText;
+
+        public readonly string RunningAsAdminDefaultText;
+
+        public string SettingsConfigFileFolder = string.Empty;
+
+        public GeneralViewModel(string runAsAdminText, string runAsUserText, bool isElevated, bool isAdmin, Func<string, int> updateTheme, Func<string, int> ipcMSGCallBackFunc, Func<string, int> ipcMSGRestartAsAdminMSGCallBackFunc, Func<string, int> ipcMSGCheckForUpdatesCallBackFunc, string configFileSubfolder = "")
         {
-            CheckFoUpdatesEventHandler = new ButtonClickCommand(CheckForUpdates_Click);
-            RestartElevatedButtonEventHandler = new ButtonClickCommand(Restart_Elevated);
+            this.CheckFoUpdatesEventHandler = new ButtonClickCommand(CheckForUpdates_Click);
+            this.RestartElevatedButtonEventHandler = new ButtonClickCommand(Restart_Elevated);
 
             try
             {
@@ -66,54 +62,52 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
                 SettingsUtils.SaveSettings(GeneralSettingsConfigs.ToJsonString(), string.Empty);
             }
 
+            // set the callback functions value to hangle outgoing IPC message.
+            SendConfigMSG = ipcMSGCallBackFunc;
+            SendCheckForUpdatesConfigMSG = ipcMSGCheckForUpdatesCallBackFunc;
+            SendRestartAsAdminConfigMSG = ipcMSGRestartAsAdminMSGCallBackFunc;
+
+            // set the callback function value to update the UI theme.
+            UpdateUIThemeCallBack = updateTheme;
+            UpdateUIThemeCallBack(GeneralSettingsConfigs.Theme.ToLower());
+
+            // Update Settings file folder:
+            SettingsConfigFileFolder = configFileSubfolder;
+
             switch (GeneralSettingsConfigs.Theme.ToLower())
             {
                 case "light":
                     _isLightThemeRadioButtonChecked = true;
-                    try
-                    {
-                        ShellPage.ShellHandler.RequestedTheme = ElementTheme.Light;
-                    }
-                    catch
-                    {
-                    }
-
                     break;
                 case "dark":
                     _isDarkThemeRadioButtonChecked = true;
-                    try
-                    {
-                        ShellPage.ShellHandler.RequestedTheme = ElementTheme.Dark;
-                    }
-                    catch
-                    {
-                    }
-
                     break;
                 case "system":
                     _isSystemThemeRadioButtonChecked = true;
-                    try
-                    {
-                        ShellPage.ShellHandler.RequestedTheme = ElementTheme.Default;
-                    }
-                    catch
-                    {
-                    }
-
                     break;
             }
 
             _startup = GeneralSettingsConfigs.Startup;
             _autoDownloadUpdates = GeneralSettingsConfigs.AutoDownloadUpdates;
-            _isElevated = ShellPage.IsElevated;
+            _isElevated = isElevated;
             _runElevated = GeneralSettingsConfigs.RunElevated;
 
-            RunningAsUserDefaultText = loader.GetString("GeneralSettings_RunningAsUserText");
-            RunningAsAdminDefaultText = loader.GetString("GeneralSettings_RunningAsAdminText");
+            RunningAsUserDefaultText = runAsUserText;
+            RunningAsAdminDefaultText = runAsAdminText;
 
-            _isAdmin = ShellPage.IsUserAnAdmin;
+            _isAdmin = isAdmin;
         }
 
+        private bool _packaged = false;
+        private bool _startup = false;
+        private bool _isElevated = false;
+        private bool _runElevated = false;
+        private bool _isAdmin = false;
+        private bool _isDarkThemeRadioButtonChecked = false;
+        private bool _isLightThemeRadioButtonChecked = false;
+        private bool _isSystemThemeRadioButtonChecked = false;
+        private bool _autoDownloadUpdates = false;
+
         // Gets or sets a value indicating whether packaged.
         public bool Packaged
         {
@@ -265,7 +259,7 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
                     _isDarkThemeRadioButtonChecked = value;
                     try
                     {
-                        ShellPage.ShellHandler.RequestedTheme = ElementTheme.Dark;
+                        UpdateUIThemeCallBack(GeneralSettingsConfigs.Theme);
                     }
                     catch
                     {
@@ -291,7 +285,7 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
                     _isLightThemeRadioButtonChecked = value;
                     try
                     {
-                        ShellPage.ShellHandler.RequestedTheme = ElementTheme.Light;
+                        UpdateUIThemeCallBack(GeneralSettingsConfigs.Theme);
                     }
                     catch
                     {
@@ -317,7 +311,7 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
                     _isSystemThemeRadioButtonChecked = value;
                     try
                     {
-                        ShellPage.ShellHandler.RequestedTheme = ElementTheme.Default;
+                        UpdateUIThemeCallBack(GeneralSettingsConfigs.Theme);
                     }
                     catch
                     {
@@ -343,30 +337,30 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
 
             OutGoingGeneralSettings outsettings = new OutGoingGeneralSettings(GeneralSettingsConfigs);
 
-            ShellPage.DefaultSndMSGCallback(outsettings.ToString());
+            SendConfigMSG(outsettings.ToString());
         }
 
         // callback function to launch the URL to check for updates.
-        private void CheckForUpdates_Click()
+        private async void CheckForUpdates_Click()
         {
-            GeneralSettings settings = SettingsUtils.GetSettings<GeneralSettings>(string.Empty);
+            GeneralSettings settings = SettingsUtils.GetSettings<GeneralSettings>(SettingsConfigFileFolder);
             settings.CustomActionName = "check_for_updates";
 
             OutGoingGeneralSettings outsettings = new OutGoingGeneralSettings(settings);
             GeneralSettingsCustomAction customaction = new GeneralSettingsCustomAction(outsettings);
 
-            ShellPage.CheckForUpdatesMsgCallback?.Invoke(customaction.ToString());
+            SendCheckForUpdatesConfigMSG(customaction.ToString());
         }
 
         public void Restart_Elevated()
         {
-            GeneralSettings settings = SettingsUtils.GetSettings<GeneralSettings>(string.Empty);
+            GeneralSettings settings = SettingsUtils.GetSettings<GeneralSettings>(SettingsConfigFileFolder);
             settings.CustomActionName = "restart_elevation";
 
             OutGoingGeneralSettings outsettings = new OutGoingGeneralSettings(settings);
             GeneralSettingsCustomAction customaction = new GeneralSettingsCustomAction(outsettings);
 
-            ShellPage.SndRestartAsAdminMsgCallback?.Invoke(customaction.ToString());
+            SendRestartAsAdminConfigMSG(customaction.ToString());
         }
     }
 }

src/core/Microsoft.PowerToys.Settings.UI.UnitTests/ModelsTests/BasePTModuleSettingsTest.cs

@@ -0,0 +1,53 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using Microsoft.PowerToys.Settings.UI.Lib;
+using Microsoft.PowerToys.Settings.UnitTest;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Newtonsoft.Json.Linq;
+using Newtonsoft.Json.Schema;
+
+namespace CommonLibTest
+{
+    [TestClass]
+    public class BasePTModuleSettingsTest
+    {
+        // Work around for System.JSON required properties:
+        // https://docs.microsoft.com/en-us/dotnet/standard/serialization/system-text-json-migrate-from-newtonsoft-how-to.
+        // Test also fails when the attributes are not initialized i.e they have null values.
+        [TestMethod]
+        [Obsolete]
+        public void ToJsonString_ShouldReturnValidJSONOfModel_WhenSuccessful()
+        {
+            // Arrange
+            string file_name = "test\\BasePTModuleSettingsTest";
+            string expectedSchemaText = @"
+                {
+                    '$schema': 'http://json-schema.org/draft-04/schema#',
+                    'type': 'object',
+                    'properties': {
+                    'name': {
+                        'type': 'string'
+                    },
+                    'version': {
+                        'type': 'string'
+                    }
+                    },
+                'additionalProperties': false
+                }";
+
+            string testSettingsConfigs = new BasePTSettingsTest().ToJsonString();
+            SettingsUtils.SaveSettings(testSettingsConfigs, file_name);
+            JsonSchema expectedSchema = JsonSchema.Parse(expectedSchemaText);
+
+            // Act
+            JObject actualSchema = JObject.Parse(SettingsUtils.GetSettings<BasePTSettingsTest>(file_name).ToJsonString());
+            bool valid = actualSchema.IsValid(expectedSchema);
+
+            // Assert
+            Assert.IsTrue(valid);
+        }
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.UnitTests/ModelsTests/BasePTSettingsTest.cs

@@ -0,0 +1,17 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Microsoft.PowerToys.Settings.UI.Lib;
+
+namespace Microsoft.PowerToys.Settings.UnitTest
+{
+    public class BasePTSettingsTest : BasePTModuleSettings
+    {
+        public BasePTSettingsTest()
+        {
+            Name = string.Empty;
+            Version = string.Empty;
+        }
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.UnitTests/ModelsTests/HelperTest.cs

@@ -0,0 +1,76 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using Microsoft.PowerToys.Settings.UI.Lib.Utilities;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace CommonLibTest
+{
+    [TestClass]
+    public class HelperTest
+    {
+        public static void TestStringIsSmaller(string v1, string v2)
+        {
+            var res = Helper.CompareVersions(v1, v2);
+            Assert.IsTrue(res < 0);
+        }
+
+        public static void TestStringsAreEqual(string v1, string v2)
+        {
+            var res = Helper.CompareVersions(v1, v2);
+            Assert.IsTrue(res == 0);
+        }
+
+        [TestMethod]
+        public void Helper_CompareVersions_ShouldBeEqual_WhenSuccessful()
+        {
+            TestStringsAreEqual("v0.0.0", "v0.0.0");
+            TestStringsAreEqual("v0.1.1", "v0.1.1");
+            TestStringsAreEqual("v1.1.1", "v1.1.1");
+            TestStringsAreEqual("v1.999.99", "v1.999.99");
+        }
+
+        [TestMethod]
+        public void Helper_CompareVersions_ShouldBeSmaller_WhenSuccessful()
+        {
+            TestStringIsSmaller("v0.0.0", "v0.0.1");
+            TestStringIsSmaller("v0.0.0", "v0.1.0");
+            TestStringIsSmaller("v0.0.0", "v1.0.0");
+            TestStringIsSmaller("v1.0.1", "v1.0.2");
+            TestStringIsSmaller("v1.1.1", "v1.1.2");
+            TestStringIsSmaller("v1.1.1", "v1.2.0");
+            TestStringIsSmaller("v1.999.99", "v2.0.0");
+            TestStringIsSmaller("v1.0.99", "v1.2.0");
+        }
+
+        [TestMethod]
+        [ExpectedException(typeof(FormatException))]
+        public void Helper_CompareVersions_ShouldThrowBadFormat_WhenNoVersionString()
+        {
+            Helper.CompareVersions("v0.0.1", string.Empty);
+        }
+
+        [TestMethod]
+        [ExpectedException(typeof(FormatException))]
+        public void Helper_CompareVersions_ShouldThrowBadFormat_WhenShortVersionString()
+        {
+            Helper.CompareVersions("v0.0.1", "v0.1");
+        }
+
+        [TestMethod]
+        [ExpectedException(typeof(FormatException))]
+        public void Helper_CompareVersions_ShouldThrowBadFormat_WhenLongVersionString()
+        {
+            Helper.CompareVersions("v0.0.1", "v0.0.0.1");
+        }
+
+        [TestMethod]
+        [ExpectedException(typeof(FormatException))]
+        public void Helper_CompareVersions_ShouldThrowBadFormat_WhenItIsNotAVersionString()
+        {
+            Helper.CompareVersions("v0.0.1", "HelloWorld");
+        }
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.UnitTests/ModelsTests/SettingsUtilsTests.cs

@@ -0,0 +1,123 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.IO;
+using System.Linq;
+using System.Text.Json;
+using Microsoft.PowerToys.Settings.UI.Lib;
+using Microsoft.PowerToys.Settings.UnitTest;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace CommonLibTest
+{
+    [TestClass]
+    public class SettingsUtilsTests
+    {
+        public SettingsUtilsTests()
+        {
+            string file_name = "\\test";
+            if (SettingsUtils.SettingsFolderExists(file_name))
+            {
+                DeleteFolder(file_name);
+            }
+        }
+
+        [TestCleanup]
+        public void Cleanup()
+        {
+            string file_name = "\\test";
+            if (SettingsUtils.SettingsFolderExists(file_name))
+            {
+                DeleteFolder(file_name);
+            }
+        }
+
+        [TestMethod]
+        public void SaveSettings_SaveSettingsToFile_WhenFilePathExists()
+        {
+            // Arrange
+            string file_name = "\\test";
+            string file_contents_correct_json_content = "{\"name\":\"powertoy module name\",\"version\":\"powertoy version\"}";
+
+            BasePTSettingsTest expected_json = JsonSerializer.Deserialize<BasePTSettingsTest>(file_contents_correct_json_content);
+
+            // Act
+            SettingsUtils.SaveSettings(file_contents_correct_json_content, file_name);
+            BasePTSettingsTest actual_json = SettingsUtils.GetSettings<BasePTSettingsTest>(file_name);
+
+            // Assert
+            Assert.IsTrue(actual_json.Equals(actual_json));
+        }
+
+        [TestMethod]
+        public void SaveSettings_ShouldCreateFile_WhenFilePathIsNotFound()
+        {
+            // Arrange
+            string file_name = "test\\Test Folder";
+            string file_contents_correct_json_content = "{\"name\":\"powertoy module name\",\"version\":\"powertoy version\"}";
+
+            BasePTSettingsTest expected_json = JsonSerializer.Deserialize<BasePTSettingsTest>(file_contents_correct_json_content);
+
+            // Act
+            if (SettingsUtils.SettingsFolderExists(file_name))
+            {
+                DeleteFolder(file_name);
+            }
+
+            SettingsUtils.SaveSettings(file_contents_correct_json_content, file_name);
+            BasePTSettingsTest actual_json = SettingsUtils.GetSettings<BasePTSettingsTest>(file_name);
+
+            // Assert
+            Assert.IsTrue(actual_json.Equals(actual_json));
+        }
+
+        [TestMethod]
+        public void SettingsFolderExists_ShouldReturnFalse_WhenFilePathIsNotFound()
+        {
+            // Arrange
+            string file_name_random = "test\\" + RandomString();
+            string file_name_exists = "test\\exists";
+            string file_contents_correct_json_content = "{\"name\":\"powertoy module name\",\"version\":\"powertoy version\"}";
+
+            // Act
+            bool pathNotFound = SettingsUtils.SettingsFolderExists(file_name_random);
+
+            SettingsUtils.SaveSettings(file_contents_correct_json_content, file_name_exists);
+            bool pathFound = SettingsUtils.SettingsFolderExists(file_name_exists);
+
+            // Assert
+            Assert.IsFalse(pathNotFound);
+            Assert.IsTrue(pathFound);
+        }
+
+        [TestMethod]
+        public void CreateSettingsFolder_ShouldCreateFolder_WhenSuccessful()
+        {
+            // Arrange
+            string file_name = "test\\" + RandomString();
+
+            // Act
+            SettingsUtils.CreateSettingsFolder(file_name);
+
+            // Assert
+            Assert.IsTrue(SettingsUtils.SettingsFolderExists(file_name));
+        }
+
+        public void DeleteFolder(string powertoy)
+        {
+            Directory.Delete(Path.Combine(SettingsUtils.LocalApplicationDataFolder(), $"Microsoft\\PowerToys\\{powertoy}"), true);
+        }
+
+        public static string RandomString()
+        {
+            Random random = new Random();
+            int length = 20;
+            const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+
+            return new string(Enumerable.Repeat(chars, length)
+              .Select(s => s[random.Next(s.Length)]).ToArray());
+        }
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.UnitTests/ViewModelTests/General.cs

@@ -0,0 +1,201 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.IO;
+using System.Text.Json;
+using Microsoft.PowerToys.Settings.UI.Lib;
+using Microsoft.PowerToys.Settings.UI.Lib.ViewModels;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace ViewModelTests
+{
+    [TestClass]
+    public class General
+    {
+        public const string generalSettings_file_name = "Test\\GenealSettings";
+
+        [TestInitialize]
+        public void Setup()
+        {
+            // initialize creation of test settings file.
+            GeneralSettings generalSettings = new GeneralSettings();
+            SettingsUtils.SaveSettings(generalSettings.ToJsonString(), generalSettings_file_name);
+        }
+
+        [TestCleanup]
+        public void CleanUp()
+        {
+            // delete folder created.
+            if (SettingsUtils.SettingsFolderExists(generalSettings_file_name))
+            {
+                DeleteFolder(generalSettings_file_name);
+            }
+        }
+
+        public void DeleteFolder(string powertoy)
+        {
+            Directory.Delete(Path.Combine(SettingsUtils.LocalApplicationDataFolder(), $"Microsoft\\PowerToys\\{powertoy}"), true);
+        }
+
+        [TestMethod]
+        public void IsElevated_ShouldUpdateRunasAdminStatusAttrs_WhenSuccessful()
+        {
+            // Arrange
+            Func<string, int> SendMockIPCConfigMSG = msg => { return 0; };
+            Func<string, int> SendRestartAdminIPCMessage = msg => { return 0; };
+            Func<string, int> SendCheckForUpdatesIPCMessage = msg => { return 0; };
+            GeneralViewModel viewModel = new GeneralViewModel(
+                "GeneralSettings_RunningAsAdminText",
+                "GeneralSettings_RunningAsUserText",
+                false,
+                false,
+                UpdateUIThemeMethod,
+                SendMockIPCConfigMSG,
+                SendRestartAdminIPCMessage,
+                SendCheckForUpdatesIPCMessage,
+                generalSettings_file_name);
+
+            Assert.AreEqual(viewModel.RunningAsUserDefaultText, viewModel.RunningAsText);
+            Assert.IsFalse(viewModel.IsElevated);
+
+            // Act
+            viewModel.IsElevated = true;
+
+            // Assert
+            Assert.AreEqual(viewModel.RunningAsAdminDefaultText, viewModel.RunningAsText);
+            Assert.IsTrue(viewModel.IsElevated);
+        }
+
+        [TestMethod]
+        public void Startup_ShouldEnableRunOnStartUp_WhenSuccessful()
+        {
+            // Assert
+            Func<string, int> SendMockIPCConfigMSG = msg =>
+            {
+                OutGoingGeneralSettings snd = JsonSerializer.Deserialize<OutGoingGeneralSettings>(msg);
+                Assert.IsTrue(snd.GeneralSettings.Startup);
+                return 0;
+            };
+
+            // Arrange
+            Func<string, int> SendRestartAdminIPCMessage = msg => { return 0; };
+            Func<string, int> SendCheckForUpdatesIPCMessage = msg => { return 0; };
+            GeneralViewModel viewModel = new GeneralViewModel(
+                "GeneralSettings_RunningAsAdminText",
+                "GeneralSettings_RunningAsUserText",
+                false,
+                false,
+                UpdateUIThemeMethod,
+                SendMockIPCConfigMSG,
+                SendRestartAdminIPCMessage,
+                SendCheckForUpdatesIPCMessage,
+                generalSettings_file_name);
+            Assert.IsFalse(viewModel.Startup);
+
+            // act
+            viewModel.Startup = true;
+        }
+
+        [TestMethod]
+        public void RunElevated_ShouldEnableAlwaysRunElevated_WhenSuccessful()
+        {
+            // Assert
+            Func<string, int> SendMockIPCConfigMSG = msg =>
+            {
+                OutGoingGeneralSettings snd = JsonSerializer.Deserialize<OutGoingGeneralSettings>(msg);
+                Assert.IsTrue(snd.GeneralSettings.RunElevated);
+                return 0;
+            };
+
+            Func<string, int> SendRestartAdminIPCMessage = msg => { return 0; };
+            Func<string, int> SendCheckForUpdatesIPCMessage = msg => { return 0; };
+
+            // Arrange
+            GeneralViewModel viewModel = new GeneralViewModel(
+                "GeneralSettings_RunningAsAdminText",
+                "GeneralSettings_RunningAsUserText",
+                false,
+                false,
+                UpdateUIThemeMethod,
+                SendMockIPCConfigMSG,
+                SendRestartAdminIPCMessage,
+                SendCheckForUpdatesIPCMessage,
+                generalSettings_file_name);
+
+            Assert.IsFalse(viewModel.RunElevated);
+
+            // act
+            viewModel.RunElevated = true;
+        }
+
+        [TestMethod]
+        public void IsLightThemeRadioButtonChecked_ShouldThemeToLight_WhenSuccessful()
+        {
+            // Arrange
+            GeneralViewModel viewModel = null;
+            // Assert
+            Func<string, int> SendMockIPCConfigMSG = msg =>
+            {
+                OutGoingGeneralSettings snd = JsonSerializer.Deserialize<OutGoingGeneralSettings>(msg);
+                Assert.AreEqual("light", snd.GeneralSettings.Theme);
+                return 0;
+            };
+
+            Func<string, int> SendRestartAdminIPCMessage = msg => { return 0; };
+            Func<string, int> SendCheckForUpdatesIPCMessage = msg => { return 0; };
+            viewModel = new GeneralViewModel(
+                "GeneralSettings_RunningAsAdminText",
+                "GeneralSettings_RunningAsUserText",
+                false,
+                false,
+                UpdateUIThemeMethod,
+                SendMockIPCConfigMSG,
+                SendRestartAdminIPCMessage,
+                SendCheckForUpdatesIPCMessage,
+                generalSettings_file_name);
+            Assert.IsFalse(viewModel.IsLightThemeRadioButtonChecked);
+
+            // act
+            viewModel.IsLightThemeRadioButtonChecked = true;
+        }
+
+        [TestMethod]
+        public void IsDarkThemeRadioButtonChecked_ShouldThemeToDark_WhenSuccessful()
+        {
+            // Arrange
+            // Assert
+            Func<string, int> SendMockIPCConfigMSG = msg =>
+            {
+                OutGoingGeneralSettings snd = JsonSerializer.Deserialize<OutGoingGeneralSettings>(msg);
+                Assert.AreEqual("dark", snd.GeneralSettings.Theme);
+                return 0;
+            };
+
+            Func<string, int> SendRestartAdminIPCMessage = msg => { return 0; };
+            Func<string, int> SendCheckForUpdatesIPCMessage = msg => { return 0; };
+            GeneralViewModel viewModel = new GeneralViewModel(
+                "GeneralSettings_RunningAsAdminText",
+                "GeneralSettings_RunningAsUserText",
+                false,
+                false,
+                UpdateUIThemeMethod,
+                SendMockIPCConfigMSG,
+                SendRestartAdminIPCMessage,
+                SendCheckForUpdatesIPCMessage,
+                generalSettings_file_name);
+            Assert.IsFalse(viewModel.IsDarkThemeRadioButtonChecked);
+
+
+
+            // act
+            viewModel.IsDarkThemeRadioButtonChecked = true;
+        }
+
+        public int UpdateUIThemeMethod(string themeName)
+        {
+            return 0;
+        }
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI/Microsoft.PowerToys.Settings.UI.csproj

@@ -110,7 +110,6 @@
     <Compile Include="Services\NavigationService.cs" />
     <Compile Include="ViewModels\ColorPickerViewModel.cs" />
     <Compile Include="ViewModels\Commands\ButtonClickCommand.cs" />
-    <Compile Include="ViewModels\GeneralViewModel.cs" />
     <Compile Include="ViewModels\FancyZonesViewModel.cs" />
     <Compile Include="ViewModels\ImageResizerViewModel.cs" />
     <Compile Include="ViewModels\KeyboardManagerViewModel.cs" />

src/core/Microsoft.PowerToys.Settings.UI/Views/GeneralPage.xaml

@@ -3,7 +3,6 @@
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:local="using:Microsoft.PowerToys.Settings.UI.Views"
-    xmlns:viewModel="using:Microsoft.PowerToys.Settings.UI.ViewModels"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:converters="using:Microsoft.Toolkit.Uwp.UI.Converters"
@@ -14,7 +13,6 @@
     <Page.Resources>
         <converters:BoolToObjectConverter x:Key="BoolToVisibilityConverter" TrueValue="Collapsed" FalseValue="Visible"/>
         <converters:BoolToVisibilityConverter x:Key="VisibleIfTrueConverter"/>
-        <viewModel:GeneralViewModel x:Key="eventViewModel"/>
     </Page.Resources>
 
     <Grid RowSpacing="{StaticResource DefaultRowSpacing}">
@@ -56,25 +54,25 @@
             <TextBlock x:Uid="Admin_Mode" FontWeight="SemiBold"
                        Style="{StaticResource SubtitleTextBlockStyle}"/>
 
-            <TextBlock Text="{Binding Mode=TwoWay, Path=RunningAsText, Source={StaticResource eventViewModel}}"
+            <TextBlock Text="{x:Bind Mode=TwoWay, Path=ViewModel.RunningAsText}"
                        Margin="{StaticResource SmallTopMargin}"/>
 
             <Button x:Uid="GeneralPage_RestartAsAdmin_Button"
                     Margin="{StaticResource SmallTopMargin}"
                     Style="{StaticResource AccentButtonStyle}"
-                    Command = "{Binding RestartElevatedButtonEventHandler, Source={StaticResource eventViewModel}}"
-                    IsEnabled="{Binding Mode=TwoWay, Path=IsAdminButtonEnabled, Source={StaticResource eventViewModel}}"
+                    Command = "{Binding RestartElevatedButtonEventHandler}"
+                    IsEnabled="{Binding Mode=TwoWay, Path=IsAdminButtonEnabled}"
                     />
 
             <TextBlock x:Uid="General_RunAsAdminRequired"
                        Foreground="{ThemeResource SystemControlErrorTextForegroundBrush}"
-                       Visibility="{Binding Mode=TwoWay, Path=IsElevated, Source={StaticResource eventViewModel}, Converter={StaticResource BoolToVisibilityConverter}}"
+                       Visibility="{Binding Mode=TwoWay, Path=IsElevated, Converter={StaticResource BoolToVisibilityConverter}}"
                        Margin="0,24,0,-8" />
 
             <ToggleSwitch Margin="{StaticResource SmallTopMargin}"
                           x:Uid="GeneralSettings_AlwaysRunAsAdminText"
-                          IsEnabled="{Binding Mode=TwoWay, Path=IsElevated, Source={StaticResource eventViewModel}}"
-                          IsOn="{Binding Mode=TwoWay, Path=RunElevated, Source={StaticResource eventViewModel}}"/>
+                          IsEnabled="{Binding Mode=TwoWay, Path=IsElevated}"
+                          IsOn="{Binding Mode=TwoWay, Path=RunElevated}"/>
 
             <HyperlinkButton NavigateUri="https://aka.ms/powertoysDetectedElevatedHelp">
                 <TextBlock x:Uid="GeneralPage_ToggleSwitch_AlwaysRunElevated_Link" />
@@ -88,20 +86,20 @@
                                Margin="{StaticResource SmallTopMargin}">
                 <RadioButton x:Uid="GeneralPage_Radio_Theme_Dark"
                              Content="Dark"
-                             IsChecked="{ Binding Mode=TwoWay, Path=IsDarkThemeRadioButtonChecked, Source={StaticResource eventViewModel}}"/>
+                             IsChecked="{ Binding Mode=TwoWay, Path=IsDarkThemeRadioButtonChecked}"/>
 
                 <RadioButton x:Uid="GeneralPage_Radio_Theme_Light" 
                              Content="Light"
-                             IsChecked="{ Binding Mode=TwoWay, Path=IsLightThemeRadioButtonChecked, Source={StaticResource eventViewModel}}"/>
+                             IsChecked="{ Binding Mode=TwoWay, Path=IsLightThemeRadioButtonChecked}"/>
 
                 <RadioButton x:Uid="GeneralPage_Radio_Theme_Default"
                              Content="System default"
-                             IsChecked="{ Binding Mode=TwoWay, Path=IsSystemThemeRadioButtonChecked, Source={StaticResource eventViewModel}}"/>
+                             IsChecked="{ Binding Mode=TwoWay, Path=IsSystemThemeRadioButtonChecked}"/>
             </muxc:RadioButtons>
 
             <ToggleSwitch x:Uid="GeneralPage_ToggleSwitch_RunAtStartUp"  
                           Margin="{StaticResource SmallTopMargin}" 
-                          IsOn="{Binding Mode=TwoWay, Path=Startup, Source={StaticResource eventViewModel}}"/>
+                          IsOn="{Binding Mode=TwoWay, Path=Startup}"/>
 
 
 
@@ -109,7 +107,7 @@
                        Style="{StaticResource SettingsGroupTitleStyle}"/>
             <StackPanel Orientation="Horizontal" Margin="{StaticResource SmallTopMargin}">
                 <TextBlock Text="Version: " x:Uid="General_Version"  />
-                <HyperlinkButton NavigateUri="https://aka.ms/installpowertoys" Margin="4,-6,0,0">
+                <HyperlinkButton NavigateUri="https://github.com/microsoft/PowerToys/releases" Margin="4,-6,0,0">
                     <TextBlock Text="{x:Bind ViewModel.PowerToysVersion }" />
                 </HyperlinkButton>
             </StackPanel>
@@ -118,13 +116,13 @@
             <Button x:Uid="GeneralPage_CheckForUpdates"
                     Style="{StaticResource AccentButtonStyle}"
                     Foreground="White"
-                    Command="{Binding CheckFoUpdatesEventHandler, Source={StaticResource eventViewModel}}"
+                    Command="{Binding CheckFoUpdatesEventHandler}"
                     />
 
             <ToggleSwitch x:Uid="GeneralPage_ToggleSwitch_AutoDownloadUpdates" 
                           Margin="{StaticResource MediumTopMargin}"
-                          Visibility="{Binding Mode=TwoWay, Path=IsAdmin, Source={StaticResource eventViewModel}, Converter={StaticResource VisibleIfTrueConverter}}"
-                          IsOn="{Binding Mode=TwoWay, Path=AutoDownloadUpdates, Source={StaticResource eventViewModel}}"/>
+                          Visibility="{Binding Mode=TwoWay, Path=IsAdmin, Converter={StaticResource VisibleIfTrueConverter}}"
+                          IsOn="{Binding Mode=TwoWay, Path=AutoDownloadUpdates}"/>
 
         </StackPanel>
 
@@ -159,15 +157,15 @@
                     <TextBlock x:Uid="General_Repository"/>
                 </HyperlinkButton>
 
-                <HyperlinkButton NavigateUri="https://aka.ms/powerToysReportBug">
+                <HyperlinkButton NavigateUri="https://github.com/microsoft/PowerToys/issues">
                     <TextBlock x:Uid="GeneralPage_ReportAbug"/>
                 </HyperlinkButton>
 
-                <HyperlinkButton NavigateUri="https://aka.ms/powerToysRequestFeature">
+                <HyperlinkButton NavigateUri="https://github.com/microsoft/PowerToys/issues">
                     <TextBlock x:Uid="GeneralPage_RequestAFeature_URL"/>
                 </HyperlinkButton>
 
-                <HyperlinkButton NavigateUri=" https://go.microsoft.com/fwlink/?LinkId=521839">
+                <HyperlinkButton NavigateUri=" http://go.microsoft.com/fwlink/?LinkId=521839">
                     <TextBlock x:Uid="GeneralPage_PrivacyStatement_URL"/>
                 </HyperlinkButton>
 

src/core/Microsoft.PowerToys.Settings.UI/Views/GeneralPage.xaml.cs

@@ -2,7 +2,9 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-using Microsoft.PowerToys.Settings.UI.ViewModels;
+using Microsoft.PowerToys.Settings.UI.Lib.ViewModels;
+using Windows.ApplicationModel.Resources;
+using Windows.UI.Xaml;
 using Windows.UI.Xaml.Controls;
 
 namespace Microsoft.PowerToys.Settings.UI.Views
@@ -23,10 +25,40 @@ namespace Microsoft.PowerToys.Settings.UI.Views
         /// </summary>
         public GeneralPage()
         {
-            InitializeComponent();
+            this.InitializeComponent();
 
-            ViewModel = new GeneralViewModel();
-            GeneralView.DataContext = ViewModel;
+            // Load string resources
+            ResourceLoader loader = ResourceLoader.GetForViewIndependentUse();
+
+            this.ViewModel = new GeneralViewModel(
+                loader.GetString("GeneralSettings_RunningAsAdminText"),
+                loader.GetString("GeneralSettings_RunningAsUserText"),
+                ShellPage.IsElevated,
+                ShellPage.IsUserAnAdmin,
+                UpdateUIThemeMethod,
+                ShellPage.SendDefaultIPCMessage,
+                ShellPage.SendRestartAdminIPCMessage,
+                ShellPage.SendCheckForUpdatesIPCMessage);
+
+            DataContext = ViewModel;
+        }
+
+        public int UpdateUIThemeMethod(string themeName)
+        {
+            switch (themeName)
+            {
+                case "light":
+                    ShellPage.ShellHandler.RequestedTheme = ElementTheme.Light;
+                    break;
+                case "dark":
+                    ShellPage.ShellHandler.RequestedTheme = ElementTheme.Dark;
+                    break;
+                case "system":
+                    ShellPage.ShellHandler.RequestedTheme = ElementTheme.Default;
+                    break;
+            }
+
+            return 0;
         }
     }
 }

src/core/Microsoft.PowerToys.Settings.UI/Views/ShellPage.xaml.cs

@@ -61,6 +61,24 @@ namespace Microsoft.PowerToys.Settings.UI.Views
             shellFrame.Navigate(typeof(GeneralPage));
         }
 
+        public static int SendDefaultIPCMessage(string msg)
+        {
+            DefaultSndMSGCallback(msg);
+            return 0;
+        }
+
+        public static int SendCheckForUpdatesIPCMessage(string msg)
+        {
+            CheckForUpdatesMsgCallback(msg);
+            return 0;
+        }
+
+        public static int SendRestartAdminIPCMessage(string msg)
+        {
+            SndRestartAsAdminMsgCallback(msg);
+            return 0;
+        }
+
         /// <summary>
         /// Set Default IPC Message callback function.
         /// </summary>