Finite volume gradient reconstruction: PASS
Mat Object: Reference Tree Injector 1 MPI process
  type: seqaij
row 0: (0, 0.25)  (1, 0.)  (2, 0.25)  (3, 0.)  (4, 0.25)  (5, 0.)  (6, 0.25)  (7, 0.) 
row 1: (0, 0.)  (1, 0.25)  (2, 0.)  (3, 0.25)  (4, 0.)  (5, 0.25)  (6, 0.)  (7, 0.25) 
row 2:
row 3:
row 4:
row 5:
row 6:
row 7:
row 8:
row 9:
Function tests pass for order 0 at tolerance 1e-10
Function tests pass for order 0 derivatives at tolerance 1e-10