from pathlib import Path
import unittest


class TaskBreakdownPolicyTest(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        cls.skill = Path(__file__).parents[1].joinpath("SKILL.md").read_text()
        cls.task_section = cls.skill.split("## Task and Dependency Breakdown", 1)[1].split("## Version Allocation", 1)[0]

    def test_architecture_owns_complete_release_task_breakdown(self):
        required = [
            "Architecture owns complete Task decomposition",
            "every Feature allocated to the release",
            "reviews existing Tasks",
            "at least two independently executable Tasks",
            "every acceptance outcome",
            "every applicable requirement",
            "must not report planning readiness",
        ]
        for marker in required:
            self.assertIn(marker, self.task_section)

    def test_task_lifecycle_and_readiness_rules_are_fail_closed(self):
        required = [
            "repository/component owner",
            "acceptance-evidence requirements",
            "implementation artifacts",
            "inputs and outputs",
            "failure boundaries",
            "exclusions",
            "verification steps",
            "within-Feature sequencing",
            "cross-Feature prerequisite",
            "acyclic Task dependencies",
            "creates missing Tasks",
            "freely revise or remove only draft Tasks",
            "must not be deleted or silently rewritten",
            "Superseded or Cancelled",
            "replacement links",
            "invalidate prior readiness evidence",
            "pre-approval state",
            "renewed human `Approved for Implementation`",
            "separate exact-task Kanban Focus admission",
            "Approved, Kanban-admitted, in-progress, or completed Tasks must not be deleted or silently rewritten.",
            "Retain an obsolete Task with a terminal Superseded or Cancelled status, its prior evidence and history, and explicit replacement links.",
            "A material change to Task scope, outcome, dependency, repository, or component must invalidate prior readiness evidence",
        ]
        self.assertIn("version: 1.7.0", self.skill)
        for marker in required:
            self.assertIn(marker, self.task_section)


if __name__ == "__main__":
    unittest.main()