def test_dataset_groupby(self):
group1 = {'Age':[10,16], 'Weight':[15,18], 'Height':[0.8,0.6]}
group2 = {'Age':[12], 'Weight':[10], 'Height':[0.8]}
grouped = HoloMap([('M', Dataset(group1, kdims=['Age'], vdims=self.vdims)),
('F', Dataset(group2, kdims=['Age'], vdims=self.vdims))],
kdims=['Gender'], sort=False)
print(grouped.keys())
self.assertEqual(self.table.groupby(['Gender']), grouped)
