def test_verify(self):
"""
Should inherit verify functions
"""
shape = (128, 1, 64)
vm = VM(shape=shape)
vm.sl = np.ones(vm.sl.shape)
self.assertTrue(hasattr(vm, 'verify'))
self.assertTrue(vm.verify())
# should return false if NaNs are on the grid
vm.sl[0, 0, 0] = np.nan
self.assertFalse(vm.verify())
# should return false if zeros are on the grid
vm.sl = np.ones(vm.sl.shape)
self.assertTrue(vm.verify())
vm.sl[0, 0, 0] = 0.0
self.assertFalse(vm.verify())
