Simplify mocking

freqtrade/exchange/exchange.py

@@ -107,8 +107,7 @@ class Exchange:
         # Lock event loop. This is necessary to avoid race-conditions when using force* commands
         # Due to funding fee fetching.
         self._loop_lock = Lock()
-        self.loop = asyncio.new_event_loop()
+        self.loop = self._init_async_loop()
-        asyncio.set_event_loop(self.loop)
         self._config: Config = {}
 
         self._config.update(config)
@@ -212,6 +211,11 @@ class Exchange:
         if self.loop and not self.loop.is_closed():
             self.loop.close()
 
+    def _init_async_loop(self):
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+        return loop
+
     def validate_config(self, config):
         # Check if timeframe is available
         self.validate_timeframes(config.get('timeframe'))

tests/rpc/test_rpc_telegram.py

@@ -89,6 +89,7 @@ def get_telegram_testobject(mocker, default_conf, mock=True, ftbot=None):
             _start_thread=MagicMock(),
         )
     if not ftbot:
+        mocker.patch('freqtrade.exchange.exchange.Exchange._init_async_loop')
         ftbot = get_patched_freqtradebot(mocker, default_conf)
     rpc = RPC(ftbot)
     telegram = Telegram(rpc, default_conf)
@@ -140,7 +141,7 @@ async def test_telegram_startup(default_conf, mocker) -> None:
     app_mock.start = AsyncMock()
     app_mock.updater.start_polling = AsyncMock()
     app_mock.updater.running = False
-    sleep_mock = mocker.patch('freqtrade.rpc.telegram.asyncio.sleep',AsyncMock())
+    sleep_mock = mocker.patch('freqtrade.rpc.telegram.asyncio.sleep', AsyncMock())
 
     telegram, _, _ = get_telegram_testobject(mocker, default_conf)
     telegram._app = app_mock