// Copyright (c) Microsoft. All rights reserved. using System; using System.Collections.Generic; using System.Threading; using System.Threading.Tasks; using Microsoft.Extensions.AI; namespace Microsoft.Agents.AI.Hosting.A2A.UnitTests.Internal; internal sealed class DummyChatClient : IChatClient { public void Dispose() { throw new NotImplementedException(); } public Task GetResponseAsync(IEnumerable messages, ChatOptions? options = null, CancellationToken cancellationToken = default) { throw new NotImplementedException(); } public object? GetService(Type serviceType, object? serviceKey = null) => serviceType.IsInstanceOfType(this) ? this : null; public IAsyncEnumerable GetStreamingResponseAsync(IEnumerable messages, ChatOptions? options = null, CancellationToken cancellationToken = default) { throw new NotImplementedException(); } }