code: def test_two_facets(self):
      col_key = "a"
      row_key = "b"
      col_order = list("xy")
      row_order = list("xyz")
      spec = {
          "variables": {"col": col_key, "row": row_key},
          "structure": {"col": col_order, "row": row_order},
      }
      s = Subplots({}, spec, {})
  
      assert s.n_subplots == len(col_order) * len(row_order)
      assert s.subplot_spec["ncols"] == len(col_order)
      assert s.subplot_spec["nrows"] == len(row_order)
      assert s.subplot_spec["sharex"] is True
      assert s.subplot_spec["sharey"] is True
  
imports: import itertools
  import numpy
  import pytest
  from seaborn._core.subplots import Subplots
label_desc: Use image node_id 3 for calling the TestSubplotSpec obj's underlying member method code with example usage: obj.test_two_facets() without return types