diff --git a/aiogram/api/client/session/base.py b/aiogram/api/client/session/base.py
index 30b4400e..3999d9cd 100644
--- a/aiogram/api/client/session/base.py
+++ b/aiogram/api/client/session/base.py
@@ -33,7 +33,7 @@ class BaseSession(abc.ABC):
         raise Exception(response.description)
 
     @abc.abstractmethod
-    async def close(self):
+    async def close(self):  # pragma: no cover
         pass
 
     @abc.abstractmethod
diff --git a/aiogram/utils/helper.py b/aiogram/utils/helper.py
index 67400511..fbb1524b 100644
--- a/aiogram/utils/helper.py
+++ b/aiogram/utils/helper.py
@@ -165,13 +165,13 @@ class ListItem(Item):
     You can use &, | and + operators for that.
     """
 
-    def add(self, other):
+    def add(self, other):  # pragma: no cover
         return self + other
 
     def __get__(self, instance, owner):
         return ItemsList(self._value)
 
-    def __getitem__(self, item):
+    def __getitem__(self, item):  # pragma: no cover
         # Only for IDE. This method is never be called.
         return self._value
 
diff --git a/tests/test_api/test_client/test_base_bot.py b/tests/test_api/test_client/test_base_bot.py
index e0ca18b6..04ea8540 100644
--- a/tests/test_api/test_client/test_base_bot.py
+++ b/tests/test_api/test_client/test_base_bot.py
@@ -1,6 +1,7 @@
 import pytest
 from asynctest import CoroutineMock, patch
 
+from aiogram import Bot
 from aiogram.api.client.base import BaseBot
 from aiogram.api.client.session.aiohttp import AiohttpSession
 from aiogram.api.methods import GetMe
@@ -23,3 +24,23 @@ class TestBaseBot:
         ) as mocked_make_request:
             await base_bot.emit(method)
             mocked_make_request.assert_awaited_with("TOKEN", method)
+
+    @pytest.mark.asyncio
+    async def test_close(self):
+        base_bot = BaseBot("TOKEN", session=AiohttpSession())
+        await base_bot.session.create_session()
+
+        with patch(
+            "aiogram.api.client.session.aiohttp.AiohttpSession.close", new_callable=CoroutineMock
+        ) as mocked_close:
+            await base_bot.close()
+            mocked_close.assert_awaited()
+
+    @pytest.mark.asyncio
+    async def test_context_manager(self):
+        with patch(
+            "aiogram.api.client.session.aiohttp.AiohttpSession.close", new_callable=CoroutineMock
+        ) as mocked_close:
+            async with BaseBot("TOKEN", session=AiohttpSession()) as bot:
+                assert isinstance(bot, BaseBot)
+            mocked_close.assert_awaited()