public void remove_post()
{
var controller = new SystemController(_repository);
_repository.Add(new Domain.Entities.System()
{
SystemId = 1, Name = "App 1"
});
_repository.Add(new Domain.Entities.System()
{
SystemId = 2, Name = "App 2"
});
var result = controller.DeleteConfirmed(1);
result.Should().BeRedirectToRouteResult().WithAction("Index").WithController("System");
_repository.All.Should().HaveCount(1);
}