code: def test_x_and_y_paired(self):
      x = ["x", "y", "z"]
      y = ["a", "b"]
      s = Subplots({}, {}, {"structure": {"x": x, "y": y}})
  
      assert s.n_subplots == len(x) * len(y)
      assert s.subplot_spec["ncols"] == len(x)
      assert s.subplot_spec["nrows"] == len(y)
      assert s.subplot_spec["sharex"] == "col"
      assert s.subplot_spec["sharey"] == "row"
  
imports: import itertools
  import numpy
  import pytest
  from seaborn._core.subplots import Subplots
label_desc: Use image node_id 7 for calling the TestSubplotSpec obj's underlying member method code with example usage: obj.test_x_and_y_paired() without return types