Backport and improvements (#601)

* Backport RedisStorage, deep-linking
* Allow prereleases for aioredis
* Bump dependencies
* Correctly skip Redis tests on Windows
* Reformat tests code and bump Makefile

tests/conftest.py

@@ -1,9 +1,64 @@
 import pytest
+from _pytest.config import UsageError
+from aioredis.connection import parse_url as parse_redis_url
 
 from aiogram import Bot
+from aiogram.dispatcher.fsm.storage.memory import MemoryStorage
+from aiogram.dispatcher.fsm.storage.redis import RedisStorage
 from tests.mocked_bot import MockedBot
 
 
+def pytest_addoption(parser):
+    parser.addoption("--redis", default=None, help="run tests which require redis connection")
+
+
+def pytest_configure(config):
+    config.addinivalue_line("markers", "redis: marked tests require redis connection to run")
+
+
+def pytest_collection_modifyitems(config, items):
+    redis_uri = config.getoption("--redis")
+    if redis_uri is None:
+        skip_redis = pytest.mark.skip(reason="need --redis option with redis URI to run")
+        for item in items:
+            if "redis" in item.keywords:
+                item.add_marker(skip_redis)
+        return
+    try:
+        parse_redis_url(redis_uri)
+    except ValueError as e:
+        raise UsageError(f"Invalid redis URI {redis_uri!r}: {e}")
+
+
+@pytest.fixture(scope="session")
+def redis_server(request):
+    redis_uri = request.config.getoption("--redis")
+    return redis_uri
+
+
+@pytest.fixture()
+@pytest.mark.redis
+async def redis_storage(redis_server):
+    if not redis_server:
+        pytest.skip("Redis is not available here")
+    storage = RedisStorage.from_url(redis_server)
+    try:
+        yield storage
+    finally:
+        conn = await storage.redis
+        await conn.flushdb()
+        await storage.close()
+
+
+@pytest.fixture()
+async def memory_storage():
+    storage = MemoryStorage()
+    try:
+        yield storage
+    finally:
+        await storage.close()
+
+
 @pytest.fixture()
 def bot():
     bot = MockedBot()