code: def test_log(self, prefix_loader):
      log = self.compile_down(prefix_loader)
      assert (
          'Compiled "a/foo/test.html" as '
          "tmpl_a790caf9d669e39ea4d280d597ec891c4ef0404a" in log
      )
      assert "Finished compiling templates" in log
      assert (
          'Could not compile "a/syntaxerror.html": '
          "Encountered unknown tag 'endif'" in log
      )
  
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 3 for calling the TestModuleLoader obj's underlying member method code with example usage: obj.test_log(prefix_loader) without return types