code: def test_page_load_javascript():
      bar = _create_bar()
      line = _create_line()
      content = Page().add(bar, line).load_javascript()
      assert_equal("", content.data)
      assert_equal(
          ["https://assets.pyecharts.org/assets/v5/echarts.min.js"],
          content.lib,
      )
  
imports: from typing import Iterable
  from nose.tools import assert_equal, assert_in, assert_not_equal, assert_not_in, assert_true, raises
  from pyecharts.charts import Bar, Line, Page
  from pyecharts.commons.utils import OrderedSet
  from pyecharts.globals import ThemeType
  from pyecharts.components import Table
  from pyecharts import options
  from pyecharts.faker import Faker
label_desc: Use image node_id 10 for calling a global function with example usage: test_page_load_javascript() without return types