content: import unittest
  from unittest.mock import patch
  
  from pyecharts import options as opts
  from pyecharts.charts import TreeMap
  
  example_data = [
      {"value": 40, "name": "我是A"},
      {
          "value": 180,
          "name": "我是B",
          "children": [
              {
                  "value": 76,
                  "name": "我是B.children",
                  "children": [
                      {"value": 12, "name": "我是B.children.a"},
                      {"value": 28, "name": "我是B.children.b"},
                      {"value": 20, "name": "我是B.children.c"},
                      {"value": 16, "name": "我是B.children.d"},
                  ],
              }
          ],
      },
  ]
  
  
  class TestTreeMapChart(unittest.TestCase):
      @patch("pyecharts.render.engine.write_utf8_html_file")
      def test_treemap_base(self, fake_writer):
          c = TreeMap().add("演示数据", example_data)
          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_treemap_options(self, fake_writer):
          c = TreeMap().add(
              "演示数据", example_data, width="90%", height="100%", roam=False
          )
          c.render()
          _, content = fake_writer.call_args[0]
          self.assertIn("width", content)
          self.assertIn("height", content)
          self.assertIn("roam", content)
  
      @patch("pyecharts.render.engine.write_utf8_html_file")
      def test_treemap_levels_options(self, fake_writer):
          c = TreeMap().add(
              "演示数据",
              example_data,
              width="90%",
              height="100%",
              roam=False,
              levels=opts.TreeMapLevelsOpts(),
          )
          c.render()
          _, content = fake_writer.call_args[0]
          self.assertIn("levels", content)
  