HttpMessageHandler mock helper

MockHttpMessageHandlerHelper.cs

  internal static class MockHttpMessageHandlerHelper
  {
    public static void SetupSendAsync(this Mock<HttpMessageHandler> handler, Func<HttpResponseMessage> sendAsyncResultFunc)
    {
      handler.Protected()
        .Setup<Task<HttpResponseMessage>>("SendAsync", ItExpr.IsAny<HttpRequestMessage>(), ItExpr.IsAny<CancellationToken>())
        .Returns(Task<HttpResponseMessage>.Factory.StartNew(sendAsyncResultFunc));
    }

    public static void VerifySendAsync(this Mock<HttpMessageHandler> handler, Times times)
    {
      handler.Protected()
        .Verify<Task<HttpResponseMessage>>("SendAsync", times, ItExpr.IsAny<HttpRequestMessage>(), ItExpr.IsAny<CancellationToken>());
    }
    
    public static void VerifySendAsync(this Mock<HttpMessageHandler> handler, Expression<Func<HttpRequestMessage, bool>> requestMessagePredicate, Times times)
    {
      handler.Protected()
        .Verify<Task<HttpResponseMessage>>("SendAsync", times, ItExpr.Is<HttpRequestMessage>(requestMessagePredicate), ItExpr.IsAny<CancellationToken>());
    }
  }