public async Task Handle_GivenNullRequest_ShouldThrowArgumentNullException()
        {
            // Arrange
            var sut = new AdvanceActiveTournamentsPlayWeeksCommandHandler(It.IsAny <IDeletableEntityRepository <PlayWeek> >());

            // Act & Assert
            await Should.ThrowAsync <ArgumentNullException>(sut.Handle(null, It.IsAny <CancellationToken>()));
        }
        public async Task Handle_GivenValidRequest_ShouldReturnViewModel()
        {
            // Arrange
            var command = new AdvanceActiveTournamentsPlayWeeksCommand();
            var sut     = new AdvanceActiveTournamentsPlayWeeksCommandHandler(this.deletableEntityRepository);

            // Act
            var affectedRows = await sut.Handle(command, It.IsAny <CancellationToken>());

            // Assert
            affectedRows.ShouldBe(6);
        }