new_contents: 
  from django.template import TemplateSyntaxError
  from django.template.loader import get_template
  from django.test import SimpleTestCase
  
  from .utils import TemplateTestMixin
  
  
  class TestReuse(TemplateTestMixin, SimpleTestCase):
      TEMPLATES = {
          'base': '''{% block main %}{% endblock %}''',
          'reuse': '''{% extends 'base' %}{% load sniplates %}{% block true %}true{% endblock %}{% block main %}{% reuse 'true' %}{% endblock %}''',
      }
  
      def test_reuse(self):
          tmpl = get_template('reuse')
          output = tmpl.render(self.ctx)
  
          self.assertEqual(output, 'true')
  
subject: Add simple test for reuse