diff --git a/kasa/aestransport.py b/kasa/aestransport.py
@@ -38,7 +38,6 @@
 
 ONE_DAY_SECONDS = 86400
 SESSION_EXPIRE_BUFFER_SECONDS = 60 * 20
-BACKOFF_SECONDS_AFTER_LOGIN_ERROR = 1
 
 
 def _sha1(payload: bytes) -> str:
@@ -72,6 +71,7 @@ class AesTransport(BaseTransport):
     }
     CONTENT_LENGTH = "Content-Length"
     KEY_PAIR_CONTENT_LENGTH = 314
+    BACKOFF_SECONDS_AFTER_LOGIN_ERROR = 1
 
     def __init__(
         self,
@@ -213,7 +213,7 @@ async def perform_login(self):
                     self._default_credentials = get_default_credentials(
                         DEFAULT_CREDENTIALS["TAPO"]
                     )
-                    await asyncio.sleep(BACKOFF_SECONDS_AFTER_LOGIN_ERROR)
+                    await asyncio.sleep(self.BACKOFF_SECONDS_AFTER_LOGIN_ERROR)
                 await self.perform_handshake()
                 await self.try_login(self._get_login_params(self._default_credentials))
                 _LOGGER.debug(

diff --git a/kasa/tests/conftest.py b/kasa/tests/conftest.py
@@ -1,6 +1,6 @@
 import warnings
 from typing import Dict
-from unittest.mock import MagicMock
+from unittest.mock import MagicMock, patch
 
 import pytest
 
@@ -48,8 +48,8 @@ async def reset(self) -> None:
 
     transport = DummyTransport(config=DeviceConfig(host="127.0.0.123"))
     protocol = SmartProtocol(transport=transport)
-
-    return protocol
+    with patch.object(protocol, "BACKOFF_SECONDS_AFTER_TIMEOUT", 0):
+        yield protocol
 
 
 def pytest_configure():

diff --git a/kasa/tests/fixtureinfo.py b/kasa/tests/fixtureinfo.py
@@ -148,4 +148,5 @@ def _device_type_match(fixture_data: FixtureInfo, device_type):
     print(f"# {desc}")
     for value in filtered:
         print(f"\t{value.name}")
+    filtered.sort()
     return filtered
diff --git a/kasa/tests/test_aestransport.py b/kasa/tests/test_aestransport.py
@@ -135,6 +135,7 @@ async def test_login_errors(mocker, inner_error_codes, expectation, call_count):
     transport._state = TransportState.LOGIN_REQUIRED
     transport._session_expire_at = time.time() + 86400
     transport._encryption_session = mock_aes_device.encryption_session
+    mocker.patch.object(transport, "BACKOFF_SECONDS_AFTER_LOGIN_ERROR", 0)
 
     assert transport._token_url is None
 

diff --git a/kasa/tests/test_cli.py b/kasa/tests/test_cli.py
@@ -149,10 +149,15 @@ async def test_command_with_child(dev, mocker):
     runner = CliRunner()
     update_mock = mocker.patch.object(dev, "update")
 
-    dummy_child = mocker.create_autospec(IotDevice)
-    query_mock = mocker.patch.object(
-        dummy_child, "_query_helper", return_value={"dummy": "response"}
-    )
+    # create_autospec for device slows tests way too much, so we use a dummy here
+    class DummyDevice(dev.__class__):
+        def __init__(self):
+            super().__init__("127.0.0.1")
+
+        async def _query_helper(*_, **__):
+            return {"dummy": "response"}
+
+    dummy_child = DummyDevice()
 
     mocker.patch.object(dev, "_children", {"XYZ": dummy_child})
     mocker.patch.object(dev, "get_child_device", return_value=dummy_child)
@@ -165,7 +170,6 @@ async def test_command_with_child(dev, mocker):
     )
 
     update_mock.assert_called()
-    query_mock.assert_called()
     assert '{"dummy": "response"}' in res.output
     assert res.exit_code == 0