code: def test_make_iframe():
      # hardly comprehensive or robust...
      iframe = HtmlBlock()._make_iframe("XXX", "$$$", "ZZZ")
      assert "<iframe" in iframe
      assert "XXX" in iframe
      assert 'name="ZZZ"' in iframe
      assert 'id="$$$"' in iframe
  
imports: import pytest
  import mock
  from tslumen.report.html.base import *
  import jinja2
label_desc: Use image node_id 1 for calling a global function with example usage: test_make_iframe() without return types