def coerce(cls, string):
        """Create a :class:`Requirement` object from a given package spec."""
        match = re.match(cls.spec_regex, string)
        if not match:
            raise InvalidRequirementSpecError("could not parse requirement")
        package = match.group(1)
        if all(match.group(2, 3)):
            version = "".join(match.group(2, 3))
        else:
            version = None
        return cls(package, version)
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}
        )