code: def test_moves(self, toy_df, x, y):
      gb = GroupBy(["color", "group"])
      res = Shift(x=x, y=y)(toy_df, gb, "x", {})
      assert_array_equal(res["x"], toy_df["x"] + x)
      assert_array_equal(res["y"], toy_df["y"] + y)
  
imports: from itertools import product
  import numpy
  import pandas
  from pandas.testing import assert_series_equal
  from numpy.testing import assert_array_equal, assert_array_almost_equal
  from seaborn._core.moves import Dodge, Jitter, Shift, Stack, Norm
  from seaborn._core.rules import categorical_order
  from seaborn._core.groupby import GroupBy
  import pytest
label_desc: Use image node_id 2 for calling the TestShift obj's underlying member method code with example usage: obj.test_moves(toy_df, x, y) without return types