Full example code for MockSequence

SomeNewDataHandler.cs

namespace Spielerei.App.SomeHandler
{
    public class SomeNewDataHandler
    {
        private readonly ISomeService _someService;

        public SomeNewDataHandler(ISomeService someService) =>
            _someService = someService;

        public void Handle()
        {
            _someService.DoThingOne();
            _someService.DoThingTwo();
        }
    }

    public interface ISomeService
    {
        void DoThingOne();

        void DoThingTwo();
    }

    public class SomeService : ISomeService
    {
        public void DoThingOne()
        {
            // Do Thing One
        }

        public void DoThingTwo()
        {
            // Do Thing Two
        }
    }
}

SomeNewDataHandlerShould.cs

using Moq;
using Spielerei.App.SomeHandler;
using Xunit;

namespace Spielerei.Tests.SomeHandler
{
    public class SomeNewDataHandlerShould
    {
        private readonly Mock<ISomeService> _mockSomeService;

        public SomeNewDataHandlerShould()
        {
            var mockSequence = new MockSequence();
            _mockSomeService = new Mock<ISomeService>(MockBehavior.Strict);
            _mockSomeService
                .InSequence(mockSequence)
                .Setup(x => x.DoThingOne())
                .Verifiable();

            _mockSomeService
                .InSequence(mockSequence)
                .Setup(x => x.DoThingTwo())
                .Verifiable();
        }

        [Fact]
        public void RunInSequence() => 
            new SomeNewDataHandler(_mockSomeService.Object).Handle();
    }
}