"""Unit tests for own-branch lock adoption decision (#442 / #443)."""
import sys
import unittest
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parent.parent))

from issue_lock_adoption import (  # noqa: E402
    ADOPT,
    BLOCK_COMPETING,
    NO_MATCH,
    assess_own_branch_adoption,
    build_adoption_proof,
)

REQ = "feat/issue-420-server-code-parity"


class TestAssessOwnBranchAdoption(unittest.TestCase):
    def test_exact_own_branch_is_adopted(self):
        result = assess_own_branch_adoption(
            issue_number=420,
            requested_branch=REQ,
            existing_branches=[{"name": REQ, "commit_sha": "934688a"}],
        )
        self.assertEqual(result["outcome"], ADOPT)
        self.assertTrue(result["adopt"])

    def test_different_branch_same_issue_blocks(self):
        result = assess_own_branch_adoption(
            issue_number=420,
            requested_branch=REQ,
            existing_branches=[{"name": "feat/issue-420-other-work"}],
        )
        self.assertEqual(result["outcome"], BLOCK_COMPETING)
        self.assertTrue(result["block"])

    def test_no_matching_branch_is_normal_path(self):
        result = assess_own_branch_adoption(
            issue_number=420,
            requested_branch=REQ,
            existing_branches=[{"name": "feat/issue-999-unrelated"}],
        )
        self.assertEqual(result["outcome"], NO_MATCH)


class TestBuildAdoptionProof(unittest.TestCase):
    def test_proof_has_required_fields(self):
        assessment = assess_own_branch_adoption(
            issue_number=420,
            requested_branch=REQ,
            existing_branches=[{"name": REQ, "commit_sha": "934688a"}],
        )
        proof = build_adoption_proof(
            issue_number=420,
            branch_name=REQ,
            assessment=assessment,
            open_pr_checked=True,
            competing_lock_checked=True,
            lock_file_path="/tmp/example-lock.json",
            lock_file_status="written",
        )
        self.assertEqual(proof["branch_head_commit"], "934688a")
        self.assertTrue(proof["no_existing_pr_proof"])


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