code: def test_cb_key_val():
      pairs = ["KEY=val", "1=="]
      expected = {
          "key": "val",
          "1": "=",
      }
      assert options._cb_key_val(None, None, pairs) == expected
  
      # Make sure None or an empty list returns an empty dict
      assert options._cb_key_val(None, None, None) == {}
      assert options._cb_key_val(None, None, ()) == {}
  
      with pytest.raises(click.BadParameter):
          options._cb_key_val(None, None, "bad_val")
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_cb_key_val() without return types