def METHOD_NAME(self):
    g = yield self.setup_generator()
    buildrequest = yield self.insert_buildrequest_new()
    build = yield g.partial_build_dict(self.master, buildrequest)
    report = yield g.buildrequest_message(self.master, build)
    g.formatter.format_message_for_build.assert_called_with(self.master, build,
                                                            is_buildset=True,
                                                            mode=self.all_messages,
                                                            users=[])
    self.assertEqual(report, {
        'body': 'start body',
        'subject': 'start subject',
        'type': 'plain',
        'results': None,
        'builds': [build],
        'users': [],
        'patches': [],
        'logs': []
    })