code: def test_bmap_progressive_options(fake_writer):
      bmap = (
          BMap()
          .add_schema(
              baidu_ak=FAKE_API_KEY, center=[-0.118092, 51.509865]
          )
          .add_coordinate("London", -0.118092, 51.509865)
          .add(
              "bmap",
              type_="lines",
              data_pair=[
                  list(z) for z in zip(TEST_LOCATION, TEST_VALUE)
              ],
              label_opts=opts.LabelOpts(formatter="{b}"),
              progressive=200,
              progressive_threshold=500,
          )
      )
      bmap.render()
      content = fake_writer.call_args[0][1]
      assert_in("progressive", content)
      assert_in("progressiveThreshold", content)
  
file_path: pyecharts/test/test_bmap.py
imports: from unittest.mock import patch
  from nose.tools import assert_in
  from pyecharts import options
  from pyecharts.charts import BMap
  from pyecharts.globals import BMapType, ChartType
label_desc: Use image node_id 6 for calling a global function with example usage: test_bmap_progressive_options(fake_writer) without return types