Testing BC for cell-centered system

- inhomogenous neumann BC
- Mixed BC

were tested

Fixing bug in the function "projNeumannIn"

SimPEG/Mesh/DiffOperators.py

@@ -499,7 +499,7 @@ class DiffOperators(object):
             P = sp.identity(n+1).tocsr()
             if(bc[0] == 'neumann'):
                 P = P[1:,:]
-            if(bc[0] == 'neumann'):
+            if(bc[1] == 'neumann'):
                 P = P[:-1,:]
             return P
 

SimPEG/Tests/test_boundaryPoisson.py

@@ -171,6 +171,5 @@ class Test2D_InhomogeneousDirichlet(OrderTest):
 
 
 
-
 if __name__ == '__main__':
     unittest.main()