// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
#nullable disable
 
using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis;
using Microsoft.VisualStudio.Language.NavigateTo.Interfaces;
using Moq;
 
namespace Roslyn.Test.EditorUtilities.NavigateTo;
 
/// <summary>
/// A helper class used when writing unit tests for Navigate To. Given a INavigateToItemProvider, this class will
/// call StartSearch on the provider, collect the results, and return the results synchronously once the provider
/// says it's results are complete.
/// </summary>
public sealed partial class NavigateToTestAggregator
{
    private readonly INavigateToItemProvider _itemProvider;
 
    public NavigateToTestAggregator(INavigateToItemProvider itemProvider)
    {
        Contract.ThrowIfNull(itemProvider);
 
        _itemProvider = itemProvider;
    }
 
    /// <summary>
    /// Synchronously return the items produced by the INavigateToItemProvider.
    /// </summary>
    public Task<IEnumerable<NavigateToItem>> GetItemsAsync(string searchValue)
    {
        // Create the callback that we will pass to the provider
        var optionsMock = new Mock<INavigateToOptions>();
 
        var callback = new Callback(optionsMock.Object);
        _itemProvider.StartSearch(callback, searchValue);
        return callback.GetItemsAsync();
    }
}