code: def test_color_line():
      m = Map([22.5, 22.5], zoom_start=3)
      color_line = folium.ColorLine(
          [[0, 0], [0, 45], [45, 45], [45, 0], [0, 0]],
          [0, 1, 2, 3],
          colormap=["b", "g", "y", "r"],
          nb_steps=4,
          weight=10,
          opacity=1,
      )
      m.add_child(color_line)
      m._repr_html_()
  
imports: import json
  import os
  import warnings
  import pytest
  from branca.element import Element
  import folium
  from folium import Choropleth, ClickForMarker, GeoJson, Map, Popup
label_desc: Use image node_id 8 for calling a global function with example usage: test_color_line() without return types