Add token validation util, fix deepcopy of sessions and make bot hashable and comparable

tests/test_utils/test_token.py

@@ -0,0 +1,41 @@
+from unittest.mock import patch
+
+import pytest
+
+from aiogram.utils.token import TokenValidationError, validate_token, extract_bot_id
+
+BOT_ID = 123456789
+VALID_TOKEN = '123456789:AABBCCDDEEFFaabbccddeeff-1234567890'
+INVALID_TOKENS = [
+    '123456789:AABBCCDDEEFFaabbccddeeff 123456789',  # space is exists
+    'ABC:AABBCCDDEEFFaabbccddeeff123456789',  # left part is not digit
+    ':AABBCCDDEEFFaabbccddeeff123456789',  # there is no left part
+    '123456789:',  # there is no right part
+    'ABC AABBCCDDEEFFaabbccddeeff123456789',  # there is no ':' separator
+    None,  # is None
+    12345678,  # is digit
+    (42, 'TEST'),  # is tuple
+]
+
+
+@pytest.fixture(params=INVALID_TOKENS, name='invalid_token')
+def invalid_token_fixture(request):
+    return request.param
+
+
+class TestCheckToken:
+    def test_valid(self):
+        assert validate_token(VALID_TOKEN) is True
+
+    def test_invalid_token(self, invalid_token):
+        with pytest.raises(TokenValidationError):
+            validate_token(invalid_token)
+
+
+class TestExtractBotId:
+    def test_extract_bot_id(self):
+        with patch("aiogram.utils.token.validate_token") as mocked_validate_token:
+            result = extract_bot_id(VALID_TOKEN)
+
+            mocked_validate_token.assert_called_once_with(VALID_TOKEN)
+            assert result == BOT_ID