Add tests for Script/AsyncScript with RedisCluster type hints

Add tests to verify that Script and AsyncScript classes accept
RedisCluster as registered_client, validating the type hints fix
for register_script to support RedisCluster.

- test_script_with_cluster_client: Tests sync Script with RedisCluster
- test_async_script_with_cluster_client: Tests AsyncScript with RedisCluster

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: majiayu000

tests/test_asyncio/test_scripting.py

@@ -1,6 +1,8 @@
 import pytest
 import pytest_asyncio
 from redis import exceptions
+from redis.asyncio.cluster import RedisCluster
+from redis.commands.core import AsyncScript
 from tests.conftest import skip_if_server_version_lt
 
 multiply_script = """
@@ -150,3 +152,25 @@ async def test_eval_msgpack_pipeline_error_in_lua(self, r):
         with pytest.raises(exceptions.ResponseError) as excinfo:
             await pipe.execute()
         assert excinfo.type == exceptions.ResponseError
+
+
+class TestAsyncScriptTypeHints:
+    """Tests for AsyncScript type hints with RedisCluster support."""
+
+    @pytest.mark.asyncio()
+    async def test_async_script_with_cluster_client(self):
+        """Test that AsyncScript class accepts RedisCluster as registered_client.
+
+        This verifies the type hints fix for register_script to support RedisCluster.
+        We use a mock-like approach since we don't need actual cluster connection.
+        """
+        from unittest.mock import MagicMock
+
+        # Create a mock RedisCluster instance
+        mock_cluster = MagicMock(spec=RedisCluster)
+        test_script = "return 1"
+
+        # AsyncScript should accept RedisCluster without type errors
+        script = AsyncScript(mock_cluster, test_script)
+        assert script.registered_client is mock_cluster
+        assert script.script == test_script

tests/test_scripting.py

@@ -1,6 +1,7 @@
 import pytest
 import redis
 from redis import exceptions
+from redis.cluster import RedisCluster
 from redis.commands.core import Script
 from tests.conftest import skip_if_redis_enterprise, skip_if_server_version_lt
 
@@ -53,6 +54,22 @@ def test_encoder(self, r, script_bytes):
         assert encoder is not None
         assert encoder.encode("fake-script") == b"fake-script"
 
+    def test_script_with_cluster_client(self, script_str):
+        """Test that Script class accepts RedisCluster as registered_client.
+
+        This verifies the type hints fix for register_script to support RedisCluster.
+        We use a mock-like approach since we don't need actual cluster connection.
+        """
+        from unittest.mock import MagicMock
+
+        # Create a mock RedisCluster instance
+        mock_cluster = MagicMock(spec=RedisCluster)
+
+        # Script should accept RedisCluster without type errors
+        script = Script(mock_cluster, script_str)
+        assert script.registered_client is mock_cluster
+        assert script.script == script_str
+
 
 class TestScripting:
     @pytest.fixture(autouse=True)