code: def test_choice_loader(self, prefix_loader):
      self.compile_down(prefix_loader)
      self.mod_env.loader = loaders.ChoiceLoader(
          [
              self.mod_env.loader,
              loaders.DictLoader({"DICT_SOURCE": "DICT_TEMPLATE"}),
          ]
      )
      tmpl1 = self.mod_env.get_template("a/test.html")
      assert tmpl1.render() == "BAR"
      tmpl2 = self.mod_env.get_template("DICT_SOURCE")
      assert tmpl2.render() == "DICT_TEMPLATE"
  
imports: import os
  import shutil
  import sys
  import tempfile
  import time
  import weakref
  import pytest
  from jinja2 import Environment
  from jinja2 import loaders
  from jinja2._compat import PY2
  from jinja2._compat import PYPY
  from jinja2.exceptions import TemplateNotFound
  from jinja2.loaders import split_template_path
  import yatest.common
label_desc: Use image node_id 10 for calling the TestModuleLoader obj's underlying member method code with example usage: obj.test_choice_loader(prefix_loader) without return types