"""Folder-name special-use heuristics (SPEC §6.3)."""

from __future__ import annotations

import pytest

from app.sync.folder_names import infer_special_use


@pytest.mark.parametrize(
    "path,expected",
    [
        ("INBOX", "inbox"),
        ("inbox", "inbox"),
        ("Sent", "sent"),
        ("Wysłane", "sent"),  # Polish
        ("Elementy wysłane", "sent"),
        ("Gesendet", "sent"),  # German
        ("Drafts", "drafts"),
        ("Robocze", "drafts"),
        ("Trash", "trash"),
        ("Kosz", "trash"),  # Polish
        ("Papierkorb", "trash"),  # German
        ("Spam", "junk"),
        ("Junk", "junk"),
        ("Archive", "archive"),
        ("Archiwum", "archive"),
        ("INBOX/Sent", "sent"),  # nested leaf
        ("Work", None),
        ("Random Folder", None),
    ],
)
def test_infer_special_use(path: str, expected: str | None) -> None:
    assert infer_special_use(path) == expected