def checkClass(self):
a = VertexList(10, 1)
b = 2
c = True
d = SparseGraph(a)
Parameter.checkClass(a, VertexList)
Parameter.checkClass(b, int)
Parameter.checkClass(c, bool)
Parameter.checkClass(d, SparseGraph)
self.assertRaises(ValueError, Parameter.checkClass, a, SparseGraph)
self.assertRaises(ValueError, Parameter.checkClass, b, VertexList)
