def METHOD_NAME(self):
    df = pd.DataFrame({'x': [1, 2, 3], 'y': [1, 2, 3], 'z': [1, 2, 3]},
                      columns=['x', 'y', 'z'])
    ds = Dataset(df, kdims=['x'])
    self.assertEqual(ds.vdims, [Dimension('y'), Dimension('z')])