"""Tests for proof-backed reviewer handoff claim verification (#395)."""
import sys
import unittest
from pathlib import Path

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

from reviewer_proof_backed_claims import (  # noqa: E402
    PROOF_PROVENANCE_CLASSES,
    assess_proof_backed_handoff_report,
)


def _proof_backed_report():
    """A review report where every proof-sensitive claim carries evidence."""
    return "\n".join(
        [
            "## Final Report",
            "- Inventory complete: true (has_more=false, is_final_page=true,",
            "  inventory_complete=true, total_count=11) [proof: MCP metadata]",
            "- Skipped PR #372: non-mergeable, mergeable: false via gitea_view_pr",
            "  re-fetch this session, head 202be15764c173b43e0a571a1ba04d8dbed5f646",
            "  [proof: command actually run]",
            "- Baseline validation: baseline worktree branches/baseline-master-pr374,",
            "  baseline target SHA 7db8298cddbc18e885fb70c6415f3431333af4aa,",
            "  baseline dirty before: clean, command: venv/bin/pytest tests/ -q in",
            "  branches/baseline-master-pr374, result: 1290 passed 1 failed,",
            "  baseline dirty after: clean [proof: command actually run]",
            "- Master integration: git merge --no-commit prgs/master in",
            "  branches/review-pr374, result: clean merge, aborted with",
            "  git merge --abort [proof: command actually run]",
            "- Cleanup: session-owned worktrees removed; final git worktree list",
            "  shows no session-owned entries [proof: command actually run]",
        ]
    )


class TestProofBackedReportPasses(unittest.TestCase):
    def test_fully_proof_backed_report_passes(self):
        result = assess_proof_backed_handoff_report(_proof_backed_report())
        self.assertTrue(result["proven"], result["reasons"])
        self.assertEqual(result["reasons"], [])

    def test_report_without_proof_sensitive_claims_passes(self):
        result = assess_proof_backed_handoff_report(
            "## Final Report\n- Review decision: REQUEST_CHANGES\n- Blockers: tests fail"
        )
        self.assertTrue(result["proven"], result["reasons"])


class TestInventoryClaims(unittest.TestCase):
    def test_inventory_complete_from_page_size_assumption_fails(self):
        report = (
            "## Final Report\n"
            "- Inventory complete: 13 results were less than page size 50, so no"
            " further pages were assumed.\n"
        )
        result = assess_proof_backed_handoff_report(report)
        self.assertFalse(result["proven"])
        self.assertTrue(
            any("page size" in r.lower() for r in result["reasons"]),
            result["reasons"],
        )

    def test_inventory_complete_without_pagination_metadata_fails(self):
        report = "## Final Report\n- Inventory complete: all open PRs listed.\n"
        result = assess_proof_backed_handoff_report(report)
        self.assertFalse(result["proven"])
        self.assertTrue(
            any("pagination" in r.lower() for r in result["reasons"]),
            result["reasons"],
        )

    def test_inventory_complete_with_metadata_passes(self):
        report = (
            "## Final Report\n"
            "- Inventory complete: true (has_more=false, is_final_page=true,"
            " inventory_complete=true, total_count=11)\n"
        )
        result = assess_proof_backed_handoff_report(report)
        self.assertTrue(result["proven"], result["reasons"])


class TestSkippedPrClaims(unittest.TestCase):
    def test_skipped_pr_conflict_claim_without_evidence_fails(self):
        report = (
            "## Final Report\n"
            "- Skipped PR #372 because it has merge conflicts.\n"
        )
        result = assess_proof_backed_handoff_report(report)
        self.assertFalse(result["proven"])
        self.assertTrue(
            any("372" in r for r in result["reasons"]),
            result["reasons"],
        )

    def test_skipped_pr_with_structured_mergeability_evidence_passes(self):
        report = (
            "## Final Report\n"
            "- Skipped PR #372: mergeable: false via gitea_view_pr re-fetch"
            " this session.\n"
        )
        result = assess_proof_backed_handoff_report(report)
        self.assertTrue(result["proven"], result["reasons"])


class TestBaselineClaims(unittest.TestCase):
    def test_baseline_claim_without_command_fails(self):
        report = (
            "## Final Report\n"
            "- Baseline validation confirmed the failures are pre-existing"
            " on master.\n"
        )
        result = assess_proof_backed_handoff_report(report)
        self.assertFalse(result["proven"])
        self.assertTrue(
            any("baseline" in r.lower() for r in result["reasons"]),
            result["reasons"],
        )

    def test_baseline_claim_missing_dirty_status_fails(self):
        report = (
            "## Final Report\n"
            "- Baseline validation: baseline worktree branches/baseline-master-pr374,"
            " baseline target SHA 7db8298cddbc18e885fb70c6415f3431333af4aa,"
            " command: venv/bin/pytest tests/ -q, result: 1290 passed.\n"
        )
        result = assess_proof_backed_handoff_report(report)
        self.assertFalse(result["proven"])
        self.assertTrue(
            any("dirty" in r.lower() for r in result["reasons"]),
            result["reasons"],
        )


class TestIntegrationAndCleanupClaims(unittest.TestCase):
    def test_master_integration_claim_without_exact_command_fails(self):
        report = (
            "## Final Report\n"
            "- Master was merged into the review worktree before validation.\n"
        )
        result = assess_proof_backed_handoff_report(report)
        self.assertFalse(result["proven"])
        self.assertTrue(
            any("integration" in r.lower() or "merge" in r.lower() for r in result["reasons"]),
            result["reasons"],
        )

    def test_cleanup_claim_without_final_worktree_proof_fails(self):
        report = (
            "## Final Report\n"
            "- Cleanup: baseline and review worktrees were removed.\n"
        )
        result = assess_proof_backed_handoff_report(report)
        self.assertFalse(result["proven"])
        self.assertTrue(
            any("worktree list" in r.lower() for r in result["reasons"]),
            result["reasons"],
        )


class TestProvenanceClasses(unittest.TestCase):
    def test_provenance_classes_cover_required_distinctions(self):
        self.assertEqual(
            PROOF_PROVENANCE_CLASSES,
            (
                "command actually run",
                "MCP metadata",
                "inherited from previous blocker state",
                "not checked",
            ),
        )


class TestExports(unittest.TestCase):
    def test_review_proofs_reexport(self):
        from review_proofs import (
            assess_proof_backed_handoff_report as exported,
        )

        self.assertTrue(callable(exported))


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