#2507 Easier to future-proof this now!

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22057 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2540 Added checks to ensure tutorial simulations end up in expected state.

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22058 b5f69653-2bf5-0310-8201-b0dafb8e1405