[CmdPal][UT] Refactor some cmdpal ext's ut and improve the test case (#40896)

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fix/what does it change/how was it tested (even manually, if necessary)?
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## Summary of the Pull Request
1. Remove some AI generated nonsense case
2. Add ISettingsInterface for those ext for testing purpose.
3. Add query test.

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## PR Checklist

- [x] Closes: #40897
- [x] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [x] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

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## Detailed Description of the Pull Request / Additional comments

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---------

Co-authored-by: Yu Leng <yuleng@microsoft.com>

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/FallbackTimeDateItem.cs

@@ -16,10 +16,10 @@ namespace Microsoft.CmdPal.Ext.TimeDate;
 internal sealed partial class FallbackTimeDateItem : FallbackCommandItem
 {
     private readonly HashSet<string> _validOptions;
-    private SettingsManager _settingsManager;
+    private ISettingsInterface _settingsManager;
     private DateTime? _timestamp;
 
-    public FallbackTimeDateItem(SettingsManager settings, DateTime? timestamp = null)
+    public FallbackTimeDateItem(ISettingsInterface settings, DateTime? timestamp = null)
          : base(new NoOpCommand(), Resources.Microsoft_plugin_timedate_fallback_display_title)
     {
         Title = string.Empty;

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/Helpers/AvailableResultsList.cs

@@ -22,7 +22,7 @@ internal static class AvailableResultsList
     /// <param name="firstWeekOfYear">Required for UnitTest: Use custom first week of the year instead of the plugin setting.</param>
     /// <param name="firstDayOfWeek">Required for UnitTest: Use custom first day of the week instead the plugin setting.</param>
     /// <returns>List of results</returns>
-    internal static List<AvailableResult> GetList(bool isKeywordSearch, SettingsManager settings, bool? timeLongFormat = null, bool? dateLongFormat = null, DateTime? timestamp = null, CalendarWeekRule? firstWeekOfYear = null, DayOfWeek? firstDayOfWeek = null)
+    internal static List<AvailableResult> GetList(bool isKeywordSearch, ISettingsInterface settings, bool? timeLongFormat = null, bool? dateLongFormat = null, DateTime? timestamp = null, CalendarWeekRule? firstWeekOfYear = null, DayOfWeek? firstDayOfWeek = null)
     {
         var results = new List<AvailableResult>();
         var calendar = CultureInfo.CurrentCulture.Calendar;

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/Helpers/ISettingsInterface.cs

@@ -0,0 +1,26 @@
+// 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.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Microsoft.CmdPal.Ext.TimeDate.Helpers;
+
+public interface ISettingsInterface
+{
+    public int FirstWeekOfYear { get; }
+
+    public int FirstDayOfWeek { get; }
+
+    public bool EnableFallbackItems { get; }
+
+    public bool TimeWithSecond { get; }
+
+    public bool DateWithWeekday { get; }
+
+    public List<string> CustomFormats { get; }
+}

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/Helpers/SettingsManager.cs

@@ -11,7 +11,7 @@ using Microsoft.CommandPalette.Extensions.Toolkit;
 
 namespace Microsoft.CmdPal.Ext.TimeDate.Helpers;
 
-public class SettingsManager : JsonSettingsManager
+public class SettingsManager : JsonSettingsManager, ISettingsInterface
 {
     // Line break character used in WinUI3 TextBox and TextBlock.
     private const char TEXTBOXNEWLINE = '\r';

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/Helpers/TimeDateCalculator.cs

@@ -27,7 +27,7 @@ public sealed partial class TimeDateCalculator
     /// </summary>
     /// <param name="query">Search query object</param>
     /// <returns>List of Wox <see cref="Result"/>s.</returns>
-    public static List<ListItem> ExecuteSearch(SettingsManager settings, string query)
+    public static List<ListItem> ExecuteSearch(ISettingsInterface settings, string query)
     {
         var isEmptySearchInput = string.IsNullOrWhiteSpace(query);
         List<AvailableResult> availableFormats = new List<AvailableResult>();

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/Pages/TimeDateExtensionPage.cs

@@ -19,9 +19,9 @@ internal sealed partial class TimeDateExtensionPage : DynamicListPage
     private IList<ListItem> _results = new List<ListItem>();
     private bool _dataLoaded;
 
-    private SettingsManager _settingsManager;
+    private ISettingsInterface _settingsManager;
 
-    public TimeDateExtensionPage(SettingsManager settingsManager)
+    public TimeDateExtensionPage(ISettingsInterface settingsManager)
     {
         Icon = Icons.TimeDateExtIcon;
         Title = Resources.Microsoft_plugin_timedate_main_page_title;

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/TimeDateCommandsProvider.cs

@@ -15,7 +15,7 @@ namespace Microsoft.CmdPal.Ext.TimeDate;
 public partial class TimeDateCommandsProvider : CommandProvider
 {
     private readonly CommandItem _command;
-    private static readonly SettingsManager _settingsManager = new();
+    private static readonly SettingsManager _settingsManager = new SettingsManager();
     private static readonly CompositeFormat MicrosoftPluginTimedatePluginDescription = System.Text.CompositeFormat.Parse(Resources.Microsoft_plugin_timedate_plugin_description);
     private static readonly TimeDateExtensionPage _timeDateExtensionPage = new(_settingsManager);
     private readonly FallbackTimeDateItem _fallbackTimeDateItem = new(_settingsManager);