"""Tests for canonical issue workflow label policy (#513)."""

from __future__ import annotations

import sys
import unittest
from pathlib import Path

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

import issue_workflow_labels as labels  # noqa: E402


class TestIssueWorkflowLabelValidation(unittest.TestCase):
    def test_valid_labeled_issue(self):
        result = labels.assess_issue_labels(["type:feature", "status:ready"])
        self.assertTrue(result["valid"])
        self.assertEqual(result["type_labels"], ["type:feature"])
        self.assertEqual(result["status_labels"], ["status:ready"])

    def test_issue_missing_type_label(self):
        result = labels.assess_issue_labels(["status:ready"])
        self.assertFalse(result["valid"])
        self.assertIn("issue is missing a type:* label", result["errors"])

    def test_issue_missing_status_label(self):
        result = labels.assess_issue_labels(["type:bug"])
        self.assertFalse(result["valid"])
        self.assertIn("issue is missing a status:* label", result["errors"])

    def test_discussion_issue_missing_type_discussion(self):
        result = labels.assess_issue_labels(
            ["type:feature", "status:triage"],
            discussion=True,
        )
        self.assertFalse(result["valid"])
        self.assertIn("discussion issue is missing type:discussion", result["errors"])

    def test_multiple_conflicting_status_labels(self):
        result = labels.assess_issue_labels(
            ["type:feature", "status:ready", "status:blocked"]
        )
        self.assertFalse(result["valid"])
        self.assertTrue(
            any("multiple active status:* labels" in err for err in result["errors"])
        )


class TestIssueWorkflowStatusTransitions(unittest.TestCase):
    def test_status_transition_removes_old_status_label(self):
        result = labels.transition_status_labels(
            ["type:feature", "status:ready", "workflow"],
            "in-progress",
        )
        self.assertEqual(result, ["type:feature", "workflow", "status:in-progress"])

    def test_pr_open_transition_applies_status_pr_open(self):
        result = labels.transition_status_labels(
            ["type:feature", "status:in-progress"],
            "pr-open",
        )
        self.assertEqual(result, ["type:feature", "status:pr-open"])

    def test_duplicate_transition_applies_status_duplicate(self):
        result = labels.transition_status_labels(
            ["type:process", "status:triage"],
            "duplicate",
        )
        self.assertEqual(result, ["type:process", "status:duplicate"])


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