* Fixed ticket:385, diffusionTerm._test() requires PySparse

 * Now uses default matrix class



git-svn-id: svn+ssh://code.matforge.org/fipy/trunk@4966 d80e17d7-ff13-0410-a124-85740d801063

fipy/terms/diffusionTerm.py

@@ -73,7 +73,8 @@ def _test(self):
         Test, 2nd order, 1 dimension, fixed flux of zero both ends.
 
         >>> from fipy.meshes import Grid1D
-        >>> from fipy.matrices.pysparseMatrix import _PysparseMeshMatrix as SparseMatrix
+        >>> from fipy import DefaultSolver
+        >>> SparseMatrix = DefaultSolver()._matrixClass
         >>> from fipy.tools import parallel
         >>> from fipy.variables.cellVariable import CellVariable
         >>> procID = parallel.procID