"""Unit tests for Redis URL auth helper (R-055)."""

from app.core.redis_url import redis_url_has_auth, redis_url_with_auth


class TestRedisUrlWithAuth:
    def test_injects_password(self):
        url = redis_url_with_auth("redis://localhost:6379/0", "secret")
        assert url == "redis://:secret@localhost:6379/0"
        assert redis_url_has_auth(url)

    def test_skips_when_password_present(self):
        url = "redis://:existing@localhost:6379/0"
        assert redis_url_with_auth(url, "new") == url

    def test_empty_password_unchanged(self):
        url = "redis://localhost:6379/0"
        assert redis_url_with_auth(url, "") == url
        assert not redis_url_has_auth(url)