1  // Copyright (c) Microsoft Corporation
 2  // The Microsoft Corporation licenses this file to you under the MIT license.
 3  // See the LICENSE file in the project root for more information.
 4  
 5  using System;
 6  using System.Linq;
 7  using System.Threading.Tasks;
 8  using Microsoft.CommandPalette.Extensions;
 9  using Microsoft.CommandPalette.Extensions.Toolkit;
10  using Windows.Foundation;
11  
12  namespace Microsoft.CmdPal.Ext.UnitTestBase;
13  
14  public class CommandPaletteUnitTestBase
15  {
16      private bool MatchesFilter(string filter, IListItem item) =>
17          FuzzyStringMatcher.ScoreFuzzy(filter, item.Title) > 0 ||
18          FuzzyStringMatcher.ScoreFuzzy(filter, item.Subtitle) > 0;
19  
20      public IListItem[] Query(string query, IListItem[] candidates)
21      {
22          var listItems = candidates
23              .Where(item => MatchesFilter(query, item))
24              .ToArray();
25  
26          return listItems;
27      }
28  
29      public async Task UpdatePageAndWaitForItems(IDynamicListPage page, Action modification)
30      {
31          // Add an event handler for the ItemsChanged event,
32          // Then call the modification action,
33          // and wait for the event to be raised.
34          var tcs = new TaskCompletionSource<object>();
35  
36          TypedEventHandler<object, IItemsChangedEventArgs> handleItemsChanged = (object s, IItemsChangedEventArgs e) =>
37          {
38              tcs.TrySetResult(e);
39          };
40  
41          page.ItemsChanged += handleItemsChanged;
42          modification();
43  
44          await tcs.Task;
45      }
46  }