def get_last_tid(self):
        try:
            spec = {'tid': {'$gt': 0}}
            sort = [('tid', -1)]
            row = self.db.docs.find_one(spec, sort=sort)
        except Exception as e:
            raise DatabaseException(e)
        if row:
            return row['tid']
        return 0
def setUp(self):
        super().setUp()

        self.project1 = self.env["project.project"].create({"name": "Project 1"})
        self.task1 = self.env["project.task"].create(
            {"name": "name1", "project_id": self.project1.id}
        )
        self.subtask1 = self.env["project.task"].create(
            {"name": "2", "project_id": self.project1.id, "parent_id": self.task1.id}
        )
        self.subtask2 = self.env["project.task"].create(
            {"name": "3", "project_id": self.project1.id, "parent_id": self.task1.id}
        )