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

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## 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.

<!-- Please review the items on the PR checklist before submitting-->
## 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

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

---------

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

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Calc/CalculatorCommandProvider.cs

@@ -12,21 +12,21 @@ namespace Microsoft.CmdPal.Ext.Calc;
 
 public partial class CalculatorCommandProvider : CommandProvider
 {
+    private static ISettingsInterface settings = new SettingsManager();
     private readonly ListItem _listItem = new(new CalculatorListPage(settings))
     {
         Subtitle = Resources.calculator_top_level_subtitle,
-        MoreCommands = [new CommandContextItem(settings.Settings.SettingsPage)],
+        MoreCommands = [new CommandContextItem(((SettingsManager)settings).Settings.SettingsPage)],
     };
 
     private readonly FallbackCalculatorItem _fallback = new(settings);
-    private static SettingsManager settings = new();
 
     public CalculatorCommandProvider()
     {
         Id = "Calculator";
         DisplayName = Resources.calculator_display_name;
         Icon = Icons.CalculatorIcon;
-        Settings = settings.Settings;
+        Settings = ((SettingsManager)settings).Settings;
     }
 
     public override ICommandItem[] TopLevelCommands() => [_listItem];

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Calc/Helper/CalculateEngine.cs

@@ -34,7 +34,7 @@ public static class CalculateEngine
     /// Interpret
     /// </summary>
     /// <param name="cultureInfo">Use CultureInfo.CurrentCulture if something is user facing</param>
-    public static CalculateResult Interpret(SettingsManager settings, string input, CultureInfo cultureInfo, out string error)
+    public static CalculateResult Interpret(ISettingsInterface settings, string input, CultureInfo cultureInfo, out string error)
     {
         error = default;
 

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Calc/Helper/ISettingsInterface.cs

@@ -0,0 +1,18 @@
+// 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.CmdPal.Ext.Calc.Helper;
+
+namespace Microsoft.CmdPal.Ext.Calc.Helper;
+
+public interface ISettingsInterface
+{
+    public CalculateEngine.TrigMode TrigUnit { get; }
+
+    public bool InputUseEnglishFormat { get; }
+
+    public bool OutputUseEnglishFormat { get; }
+
+    public bool CloseOnEnter { get; }
+}

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Calc/Helper/QueryHelper.cs

@@ -12,7 +12,7 @@ namespace Microsoft.CmdPal.Ext.Calc.Helper;
 
 public static partial class QueryHelper
 {
-    public static ListItem Query(string query, SettingsManager settings, bool isFallbackSearch, TypedEventHandler<object, object> handleSave = null)
+    public static ListItem Query(string query, ISettingsInterface settings, bool isFallbackSearch, TypedEventHandler<object, object> handleSave = null)
     {
         ArgumentNullException.ThrowIfNull(query);
         if (!isFallbackSearch)

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Calc/Helper/ResultHelper.cs

@@ -13,7 +13,7 @@ namespace Microsoft.CmdPal.Ext.Calc.Helper;
 
 public static class ResultHelper
 {
-    public static ListItem CreateResult(decimal? roundedResult, CultureInfo inputCulture, CultureInfo outputCulture, string query, SettingsManager settings, TypedEventHandler<object, object> handleSave)
+    public static ListItem CreateResult(decimal? roundedResult, CultureInfo inputCulture, CultureInfo outputCulture, string query, ISettingsInterface settings, TypedEventHandler<object, object> handleSave)
     {
         // Return null when the expression is not a valid calculator query.
         if (roundedResult == null)

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Calc/Helper/SettingsManager.cs

@@ -8,7 +8,7 @@ using Microsoft.CommandPalette.Extensions.Toolkit;
 
 namespace Microsoft.CmdPal.Ext.Calc.Helper;
 
-public class SettingsManager : JsonSettingsManager
+public class SettingsManager : JsonSettingsManager, ISettingsInterface
 {
     private static readonly string _namespace = "calculator";
 

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Calc/Pages/CalculatorListPage.cs

@@ -23,7 +23,7 @@ namespace Microsoft.CmdPal.Ext.Calc.Pages;
 public sealed partial class CalculatorListPage : DynamicListPage
 {
     private readonly Lock _resultsLock = new();
-    private readonly SettingsManager _settingsManager;
+    private readonly ISettingsInterface _settingsManager;
     private readonly List<ListItem> _items = [];
     private readonly List<ListItem> history = [];
     private readonly ListItem _emptyItem;
@@ -32,7 +32,7 @@ public sealed partial class CalculatorListPage : DynamicListPage
     // We need to avoid the double calculation. This may cause some wierd behaviors.
     private string skipQuerySearchText = string.Empty;
 
-    public CalculatorListPage(SettingsManager settings)
+    public CalculatorListPage(ISettingsInterface settings)
     {
         _settingsManager = settings;
         Icon = Icons.CalculatorIcon;

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Calc/Pages/FallbackCalculatorItem.cs

@@ -11,9 +11,9 @@ namespace Microsoft.CmdPal.Ext.Calc.Pages;
 public sealed partial class FallbackCalculatorItem : FallbackCommandItem
 {
     private readonly CopyTextCommand _copyCommand = new(string.Empty);
-    private readonly SettingsManager _settings;
+    private readonly ISettingsInterface _settings;
 
-    public FallbackCalculatorItem(SettingsManager settings)
+    public FallbackCalculatorItem(ISettingsInterface settings)
         : base(new NoOpCommand(), Resources.calculator_title)
     {
         Command = _copyCommand;