code: def test_render(self):
      with tempfile.TemporaryDirectory() as test_dir:
          template_path = os.path.join(test_dir, "test.txt.jinja")
          io_utils.write_file(template_path, "{{ greeting }}, World!")
          output_path = os.path.join(test_dir, "test.txt")
          content = template_utils.render(
              template_path=template_path,
              output_path=output_path,
              template_variables={"greeting": "Hello"},
          )
          read_content = io_utils.read_file(output_path)
          self.assertTrue(os.path.exists(output_path))
          self.assertEqual(content, read_content)
          self.assertEqual(content, "Hello, World!")
  
imports: import os
  import tempfile
  from absl.testing import absltest
  from model_card_toolkit.utils import io_utils, template_utils
label_desc: Use image node_id 1 for calling the TemplateUtilsTest obj's underlying member method code with example usage: obj.test_render() without return types