Mock de um UnitOfWork retornada a partir de um ServiceLocator

gistfile1.cs

public static Mock<IUnitOfWork> MockUnitOfWork()
{
    var mockUnitOfWork = new Mock<IUnitOfWork>();
    
    var mockUnitOfWorkFactory = new Mock<IUnitOfWorkFactory>();
    mockUnitOfWorkFactory.Setup(_ => _.Criar())
        .Returns(mockUnitOfWork.Object);

    var mockServiceLocator = new Mock<IServiceLocator>();
    mockServiceLocator.Setup(_ => _.GetInstance<IUnitOfWorkFactory>())
        .Returns(mockUnitOfWorkFactory.Object);

    ServiceLocator.SetLocatorProvider(() => mockServiceLocator.Object);
    return mockUnitOfWork;
}