code: def test_unicode_labels_decode(Chart):
      """Test unicode labels"""
      chart = Chart()
      chart.add(
          "Série1",
          [
              {
                  "value": 1,
                  "xlink": "http://1/",
                  "label": "Â°ĳæð©&×&<—×€¿_…",
              },
              {
                  "value": 2,
                  "xlink": {"href": "http://6.example.com/"},
                  "label": "æÂ°€≠|€æÂ°€əæ",
              },
              {"value": 3, "label": "unicode <3"},
          ],
      )
      if not chart._dual:
          chart.x_labels = ["&œ", "¿?", "††††††††", "unicode <3"]
      chart.render_pyquery()
  
imports: import io
  import os
  import uuid
  import pytest
  import pygal
  from pygal.graph.map import BaseMap
  from pygal.test import make_data
  from pygal.util import cut
label_desc: Use image node_id 20 for calling a global function with example usage: test_unicode_labels_decode(Chart) without return types