code: def test_single_facet_dim(self, dim):
      key = "a"
      order = list("abc")
      spec = {"variables": {dim: key}, "structure": {dim: order}}
      s = Subplots({}, spec, {})
      s.init_figure(spec, {})
  
      assert len(s) == len(order)
  
      for i, e in enumerate(s):
          assert e[dim] == order[i]
          for axis in "xy":
              assert e[axis] == axis
          assert e["top"] == (dim == "col" or i == 0)
          assert e["bottom"] == (dim == "col" or i == len(order) - 1)
          assert e["left"] == (dim == "row" or i == 0)
          assert e["right"] == (dim == "row" or i == len(order) - 1)
  
imports: import itertools
  import numpy
  import pytest
  from seaborn._core.subplots import Subplots
label_desc: Use image node_id 2 for calling the TestSubplotElements obj's underlying member method code with example usage: obj.test_single_facet_dim(dim) without return types