def test_field_cls_review_request_field(self):
        fieldset = [TestInitFieldset]
        ReviewRequestFieldSetsHook(extension=self.extension,
                                   fieldsets=fieldset)

        review = ReviewRequest()
        context = Context({
            'review_request_details': review,
            'fieldset': TestInitFieldset
        })

        t = Template(
            "{% load reviewtags %}"
            "{% for_review_request_field review_request_details 'test_init' %}"
            "{% end_for_review_request_field %}")

        t.render(context).strip()
Testing sandboxing ReviewRequestFieldset init function in
dataset/ETHPy150Open reviewboard/reviewboard/reviewboard/extensions/tests.py/SandboxTests.test_field_cls_review_request_field