@setup(inheritance_templates)
    def test_inheritance15(self):
        output = self.engine.render_to_string('inheritance15')
        self.assertEqual(output, '12inner3_')
Adds a single aggregate expression to the Query
dataset/ETHPy150Open django/django/tests/template_tests/syntax_tests/test_extends.py/InheritanceTests.test_inheritance15--crossover with--dataset/ETHPy150Open CollabQ/CollabQ/vendor/django/db/models/sql/query.py/BaseQuery.add_aggregate