import pytest

from apps.tickets.services import TicketStatusError, validate_status_transition


def test_pending_ticket_can_move_to_in_progress():
    validate_status_transition("pending", "in_progress")


def test_resolved_ticket_cannot_move_back_to_in_progress():
    with pytest.raises(TicketStatusError, match="resolved -> in_progress"):
        validate_status_transition("resolved", "in_progress")