code: def test_escape(self):
      w = Text("<script A> <ScRipt> </Script> <!-- --> <b>hi</b>")
      code = embed_snippet(w)
      assert code.find(r"<script A>") == -1
      assert (
          code.find(
              r"\u003cscript A> \u003cScRipt> \u003c/Script> \u003c!-- --> <b>hi</b>"
          )
          >= 0
      )
  
      f = StringIO()
      embed_minimal_html(f, w)
      content = f.getvalue()
      assert content.find(r"<script A>") == -1
      assert (
          content.find(
              r"\u003cscript A> \u003cScRipt> \u003c/Script> \u003c!-- --> <b>hi</b>"
          )
          >= 0
      )
  
imports: from io import StringIO
  from html.parser import HTMLParser
  import json
  import os
  import re
  import tempfile
  import shutil
  import traitlets
  from ipywidgets.widgets import IntSlider, IntText, Text, Widget, jslink, HBox, widget_serialization, widget
  from ipywidgets.embed import embed_data, embed_snippet, embed_minimal_html, dependency_state
label_desc: Use image node_id 4 for calling the TestEmbed obj's underlying member method code with example usage: obj.test_escape() without return types