feat: add RedisDeduplicationScheduleSource for scheduled task deduplication

tests/conftest.py

@@ -1,7 +1,9 @@
 import pytest
 import fakeredis.aioredis
 from redis.asyncio import Redis
-from taskiq import TaskiqMessage, TaskiqResult
+from taskiq import ScheduledTask, TaskiqMessage, TaskiqResult
+
+from taskiq_deduplication import RedisDeduplicationMiddleware
 
 
 @pytest.fixture
@@ -16,6 +18,13 @@ async def fake_redis():
     await client.aclose()
 
 
+@pytest.fixture
+def middleware(fake_redis):
+    mw = RedisDeduplicationMiddleware(redis_url="redis://localhost")
+    mw._redis = fake_redis
+    return mw
+
+
 @pytest.fixture
 async def real_redis():
     client = Redis.from_url("redis://localhost:6379/15")
@@ -57,3 +66,24 @@ def make_result():
         )
 
     return _make
+
+
+@pytest.fixture
+def make_scheduled_task():
+    def _make(
+        task_name="my_task",
+        schedule_id="schedule-1",
+        labels=None,
+        kwargs=None,
+        cron="* * * * *",
+    ):
+        return ScheduledTask(
+            task_name=task_name,
+            schedule_id=schedule_id,
+            labels=labels or {},
+            args=[],
+            kwargs=kwargs or {},
+            cron=cron,
+        )
+
+    return _make