refactor: align backend layout and supabase infra

Consolidate backend modules/tests under the backend package while syncing Supabase compose/env config and related plans.

backend/tests/unit/services/base/test_redis_service.py

@@ -0,0 +1,98 @@
+from __future__ import annotations
+
+import pytest
+
+from core.config.settings import RedisSettings
+from services.base.redis import RedisService
+
+
+class _FakeRedisClient:
+    def __init__(self) -> None:
+        self.closed = False
+
+    async def ping(self) -> bool:
+        return True
+
+    async def info(self) -> dict[str, object]:
+        return {
+            "redis_version": "7.2",
+            "connected_clients": 1,
+            "used_memory_human": "1M",
+            "uptime_in_seconds": 10,
+        }
+
+    async def aclose(self) -> None:
+        self.closed = True
+
+
+@pytest.mark.asyncio
+async def test_initialize_success(monkeypatch: pytest.MonkeyPatch) -> None:
+    service = RedisService(settings=RedisSettings(host="localhost", port=6379))
+
+    def _build_client(_: RedisService) -> _FakeRedisClient:
+        return _FakeRedisClient()
+
+    monkeypatch.setattr(RedisService, "_build_client", _build_client)
+
+    result = await service.initialize()
+
+    assert result is True
+    assert service.is_initialized is True
+
+    health = await service.health_check()
+    assert health["status"] == "healthy"
+
+
+@pytest.mark.asyncio
+async def test_initialize_failure(monkeypatch: pytest.MonkeyPatch) -> None:
+    service = RedisService(settings=RedisSettings(host="localhost", port=6379))
+
+    def _build_client(_: RedisService) -> _FakeRedisClient:
+        raise RuntimeError("boom")
+
+    monkeypatch.setattr(RedisService, "_build_client", _build_client)
+
+    result = await service.initialize()
+
+    assert result is False
+    assert service.is_initialized is False
+
+
+@pytest.mark.asyncio
+async def test_close_is_idempotent() -> None:
+    service = RedisService(settings=RedisSettings(host="localhost", port=6379))
+
+    assert await service.close() is True
+    assert service.is_initialized is False
+
+
+@pytest.mark.asyncio
+async def test_health_check_uninitialized() -> None:
+    service = RedisService(settings=RedisSettings(host="localhost", port=6379))
+
+    health = await service.health_check()
+
+    assert health["status"] == "unhealthy"
+
+
+@pytest.mark.asyncio
+async def test_close_closes_client(monkeypatch: pytest.MonkeyPatch) -> None:
+    service = RedisService(settings=RedisSettings(host="localhost", port=6379))
+    client = _FakeRedisClient()
+
+    def _build_client(_: RedisService) -> _FakeRedisClient:
+        return client
+
+    monkeypatch.setattr(RedisService, "_build_client", _build_client)
+
+    assert await service.initialize() is True
+    assert await service.close() is True
+    assert client.closed is True
+    assert service.is_initialized is False
+
+
+def test_get_client_raises_before_init() -> None:
+    service = RedisService(settings=RedisSettings(host="localhost", port=6379))
+
+    with pytest.raises(RuntimeError):
+        service.get_client()