Added support for all Redis versions (>=1.0.0) (#5)

Previously support was provided for Redis>=6.2.0

Reviewed-on: #5
Co-authored-by: Ivan Golikov <root@ivnglkv.me>
Co-committed-by: Ivan Golikov <root@ivnglkv.me>

tests/unit/test_utils.py

@@ -1,7 +1,10 @@
+from unittest.mock import AsyncMock
+
 import pytest
 from cryptography.fernet import Fernet, InvalidToken
+from redis.exceptions import ResponseError
 
-from pssecret_server.utils import decrypt_secret, encrypt_secret
+from pssecret_server.utils import _is_getdel_available, decrypt_secret, encrypt_secret
 
 from ..factories import SecretFactory
 
@@ -29,3 +32,17 @@ def test_secret_is_not_decryptable_by_random_key(fernet: Fernet):
 
     with pytest.raises(InvalidToken):
         decrypt_secret(encrypted_secret.data.encode(), random_fernet)
+
+
+@pytest.mark.parametrize(
+    ("getdel_effect", "expected_result"), [(None, True), (ResponseError, False)]
+)
+async def test_is_getdel_available(
+    getdel_effect: ResponseError | None, expected_result: bool
+):
+    redis = AsyncMock()
+    redis.getdel.side_effect = getdel_effect  # pyright: ignore[reportAny]
+
+    result = await _is_getdel_available(redis)
+
+    assert result is expected_result