content: import unittest
  from unittest.mock import patch
  
  from pyecharts.charts import Gauge
  from pyecharts import options as opts
  
  
  class TestGaugeChart(unittest.TestCase):
  
      @patch("pyecharts.render.engine.write_utf8_html_file")
      def test_gauge_base(self, fake_writer):
          c = Gauge().add("", [("完成率", 66.6)])
          c.render()
          _, content = fake_writer.call_args[0]
          self.assertEqual(c.theme, "white")
          self.assertEqual(c.renderer, "canvas")
  
      @patch("pyecharts.render.engine.write_utf8_html_file")
      def test_gauage_label_setting(self, fake_writer):
          c = Gauge().add(
              "",
              [("完成率", 66.6)],
              detail_label_opts=opts.GaugeDetailOpts(formatter="{value}"),
              title_label_opts=opts.GaugeTitleOpts(
                  font_size=40, color="blue", font_family="Microsoft YaHei"
              ),
          )
          c.render()
          _, content = fake_writer.call_args[0]
          self.assertIn("title", content)
          self.assertIn("detail", content)
  
      @patch("pyecharts.render.engine.write_utf8_html_file")
      def test_gauage_radius_setting(self, fake_writer):
          c = Gauge().add("", [("完成率", 66.6)], radius="50%")
          c.render()
          _, content = fake_writer.call_args[0]
          self.assertIn("radius", content)
  