code: def test_page_with_multi_axis():
      tl = Timeline()
      for i in range(2015, 2020):
          bar = (
              Bar()
              .add_xaxis(Faker.choose())
              .add_yaxis("商家A", Faker.values())
              .add_yaxis("商家B", Faker.values())
          )
          tl.add(bar, "{}年".format(i))
  
      for t in tl.options.get("options"):
          assert "xAxis" in t
          assert "color" in t
  
file_path: pyecharts/test/test_timeline.py
imports: import unittest
  from nose.tools import assert_equal
  from pyecharts import options
  from pyecharts.charts import Bar, Timeline
  from pyecharts.commons.utils import JsCode
  from pyecharts.faker import Faker
label_desc: Use image node_id 1 for calling a global function with example usage: test_page_with_multi_axis() without return types