[Settings] Migrate Shortcut Guide Settings Tests (#5789)

* added MSTest project

* migrated shortcut guide tests

* updated tests

* updated tests

* reverted changes to xaml file

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

@@ -0,0 +1,186 @@
+// 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.Runtime.CompilerServices;
+using Microsoft.PowerToys.Settings.UI.Lib.Helpers;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib.ViewModels
+{
+    public class ShortcutGuideViewModel : Observable
+    {
+        private ShortcutGuideSettings Settings { get; set; }
+
+        private const string ModuleName = "Shortcut Guide";
+
+        private Func<string, int> SendConfigMSG { get; }
+
+        public string SettingsConfigFileFolder = string.Empty;
+
+        public ShortcutGuideViewModel(Func<string, int> ipcMSGCallBackFunc, string configFileSubfolder = "")
+        {
+            // Update Settings file folder:
+            SettingsConfigFileFolder = configFileSubfolder;
+
+            try
+            {
+                Settings = SettingsUtils.GetSettings<ShortcutGuideSettings>(GetSettingsSubPath());
+            }
+            catch
+            {
+                Settings = new ShortcutGuideSettings();
+                SettingsUtils.SaveSettings(Settings.ToJsonString(), GetSettingsSubPath());
+            }
+
+            GeneralSettings generalSettings;
+
+            try
+            {
+                generalSettings = SettingsUtils.GetSettings<GeneralSettings>(string.Empty);
+            }
+            catch
+            {
+                generalSettings = new GeneralSettings();
+                SettingsUtils.SaveSettings(generalSettings.ToJsonString(), string.Empty);
+            }
+
+            // set the callback functions value to hangle outgoing IPC message.
+            SendConfigMSG = ipcMSGCallBackFunc;
+
+            this._isEnabled = generalSettings.Enabled.ShortcutGuide;
+            this._pressTime = Settings.Properties.PressTime.Value;
+            this._opacity = Settings.Properties.OverlayOpacity.Value;
+
+            string theme = Settings.Properties.Theme.Value;
+
+            if (theme == "dark")
+            {
+                _themeIndex = 0;
+            }
+
+            if (theme == "light")
+            {
+                _themeIndex = 1;
+            }
+
+            if (theme == "system")
+            {
+                _themeIndex = 2;
+            }
+        }
+
+        private bool _isEnabled = false;
+        private int _themeIndex = 0;
+        private int _pressTime = 0;
+        private int _opacity = 0;
+
+        public bool IsEnabled
+        {
+            get
+            {
+                return _isEnabled;
+            }
+
+            set
+            {
+                if (value != _isEnabled)
+                {
+                    _isEnabled = value;
+                    GeneralSettings generalSettings = SettingsUtils.GetSettings<GeneralSettings>(string.Empty);
+                    generalSettings.Enabled.ShortcutGuide = value;
+                    OutGoingGeneralSettings snd = new OutGoingGeneralSettings(generalSettings);
+                    SendConfigMSG(snd.ToString());
+                    OnPropertyChanged("IsEnabled");
+                }
+            }
+        }
+
+        public int ThemeIndex
+        {
+            get
+            {
+                return _themeIndex;
+            }
+
+            set
+            {
+                if (_themeIndex != value)
+                {
+                    if (value == 0)
+                    {
+                        // set theme to dark.
+                        Settings.Properties.Theme.Value = "dark";
+                        _themeIndex = value;
+                        RaisePropertyChanged();
+                    }
+
+                    if (value == 1)
+                    {
+                        // set theme to light.
+                        Settings.Properties.Theme.Value = "light";
+                        _themeIndex = value;
+                        RaisePropertyChanged();
+                    }
+
+                    if (value == 2)
+                    {
+                        // set theme to system default.
+                        Settings.Properties.Theme.Value = "system";
+                        _themeIndex = value;
+                        RaisePropertyChanged();
+                    }
+                }
+            }
+        }
+
+        public int PressTime
+        {
+            get
+            {
+                return _pressTime;
+            }
+
+            set
+            {
+                if (_pressTime != value)
+                {
+                    _pressTime = value;
+                    Settings.Properties.PressTime.Value = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
+        public int OverlayOpacity
+        {
+            get
+            {
+                return _opacity;
+            }
+
+            set
+            {
+                if (_opacity != value)
+                {
+                    _opacity = value;
+                    Settings.Properties.OverlayOpacity.Value = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
+        public string GetSettingsSubPath()
+        {
+            return SettingsConfigFileFolder + "\\" + ModuleName;
+        }
+
+        public void RaisePropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            OnPropertyChanged(propertyName);
+            SndShortcutGuideSettings outsettings = new SndShortcutGuideSettings(Settings);
+            SndModuleSettings<SndShortcutGuideSettings> ipcMessage = new SndModuleSettings<SndShortcutGuideSettings>(outsettings);
+            SendConfigMSG(ipcMessage.ToJsonString());
+        }
+    }
+}