code: def test_tab_render_embed():
      bar = _create_bar()
      line = _create_line()
      content = Tab().add(bar, "bar").add(line, "line").render_embed()
      assert_true(len(content) > 8000)
  
imports: from typing import Iterable
  from unittest.mock import patch
  from nose.tools import assert_equal, assert_in, assert_true
  from pyecharts import options
  from pyecharts.charts import Bar, Line, Tab
  from pyecharts.commons.utils import OrderedSet
  from pyecharts.components import Table
  from pyecharts.faker import Faker
  from pyecharts.globals import ThemeType
label_desc: Use image node_id 5 for calling a global function with example usage: test_tab_render_embed() without return types