CancellationTest.cs

using System;
using System.IO;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Xunit;

namespace RingCentral.Tests;

[Collection("Sequential")]
public class CancellationTest
{
    [Fact]
    public async void CancelAfter()
    {
        var rc = await ReusableRestClient.GetInstance();

        var sendFaxMessageRequest = new CreateFaxMessageRequest
        {
            to = new[]
            {
                new FaxReceiver
                {
                    phoneNumber = Environment.GetEnvironmentVariable("RINGCENTRAL_RECEIVER"),
                    name = "The Receiver"
                }
            },
            attachments = new[]
            {
                new Attachment
                {
                    filename = "rc.png",
                    content = File.ReadAllBytes("./rc.png")
                },
                new Attachment
                {
                    filename = "glip.png",
                    content = File.ReadAllBytes("./glip.png")
                },
                new Attachment
                {
                    filename = "hello.txt",
                    content = Encoding.UTF8.GetBytes("Hello 888")
                }
            }
        };
        var source = new CancellationTokenSource();
        var token = source.Token;
        source.CancelAfter(10); // impossible to send a fax within 10ms
        var taskCanceledException = false;
        try
        {
            await rc.Restapi().Account().Extension().Fax().Post(sendFaxMessageRequest, new RestRequestConfig
            {
                cancellationToken = token
            });
        }
        catch (TaskCanceledException)
        {
            taskCanceledException = true;
        }
        finally
        {
            Assert.True(taskCanceledException);
        }
    }
}