diff --git a/feeluown/gui/components/player_playlist.py b/feeluown/gui/components/player_playlist.py
index d4f83dd9a0..4619c17dc6 100644
--- a/feeluown/gui/components/player_playlist.py
+++ b/feeluown/gui/components/player_playlist.py
@@ -102,4 +102,15 @@ def scroll_to_current_song(self):
 
     def _remove_songs(self, songs):
         for song in songs:
-            self._app.playlist.remove(song)
+            playlist_songs = self._app.playlist.list()
+            if (
+                self._app.playlist.mode is PlaylistMode.fm
+                # playlist_songs should not be empty, just for robustness
+                and playlist_songs
+                and song == self._app.playlist.current_song
+                and playlist_songs[-1] == song
+            ):
+                self._app.show_msg("FM 模式下，如果当前歌曲是最后一首歌，则无法移除，请稍后再尝试移除", timeout=3000)
+                self._app.playlist.next()
+            else:
+                self._app.playlist.remove(song)
diff --git a/feeluown/player/playlist.py b/feeluown/player/playlist.py
index 9d0faf8259..d4fed7c4b1 100644
--- a/feeluown/player/playlist.py
+++ b/feeluown/player/playlist.py
@@ -315,8 +315,13 @@ def remove_no_lock(self, song):
                     self._songs.remove(song)
                     new_next_song = self._get_next_song_no_lock()
                     self.set_existing_song_as_current_song(new_next_song)
+                elif next_song is None and self.mode is PlaylistMode.fm:
+                    # The caller should not remove the current song when it
+                    # is the last song in fm mode.
+                    logger.error("Can't remove the last song in fm mode, will play next")
+                    self._next_no_lock()
+                    return
                 else:
-                    next_song = self._get_next_song_no_lock()
                     self._songs.remove(song)
                     self.set_existing_song_as_current_song(next_song)
             else:
diff --git a/feeluown/serializers/plain.py b/feeluown/serializers/plain.py
index 280be781aa..45caf805d5 100644
--- a/feeluown/serializers/plain.py
+++ b/feeluown/serializers/plain.py
@@ -28,8 +28,8 @@ def _get_items(self, model):
         # initialize fields that need to be serialized
         # if as_line option is set, we always use fields_display
         modelcls = type(model)
-        fields = [field for field in model.__fields__
-                  if field not in BaseModel.__fields__]
+        fields = [field for field in model.model_fields
+                  if field not in BaseModel.model_fields]
         # Include properties.
         pydantic_fields = ("__values__", "fields", "__fields_set__",
                            "model_computed_fields", "model_extra",
diff --git a/feeluown/uimodels/README.rst b/feeluown/uimodels/README.rst
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/feeluown/uimodels/__init__.py b/feeluown/uimodels/__init__.py
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/feeluown/uimodels/my_music.py b/feeluown/uimodels/my_music.py
deleted file mode 100644
index 542a682f2d..0000000000
--- a/feeluown/uimodels/my_music.py
+++ /dev/null
@@ -1,8 +0,0 @@
-import warnings
-
-# For backward compat.
-from feeluown.gui import MyMusicUiManager  # noqa
-
-
-warnings.warn('Please import MyMusicUiManager from feeluown.gui',
-              DeprecationWarning, stacklevel=2)
diff --git a/feeluown/uimodels/playlist.py b/feeluown/uimodels/playlist.py
deleted file mode 100644
index 2a750aae57..0000000000
--- a/feeluown/uimodels/playlist.py
+++ /dev/null
@@ -1,8 +0,0 @@
-import warnings
-
-# For backward compat.
-from feeluown.gui import PlaylistUiManager  # noqa
-
-
-warnings.warn('Please import PlaylistUiManager from feeluown.gui',
-              DeprecationWarning, stacklevel=2)
diff --git a/feeluown/uimodels/provider.py b/feeluown/uimodels/provider.py
deleted file mode 100644
index 4a4955a15b..0000000000
--- a/feeluown/uimodels/provider.py
+++ /dev/null
@@ -1,8 +0,0 @@
-import warnings
-
-# For backward compat.
-from feeluown.gui import ProviderUiManager  # noqa
-
-
-warnings.warn('Please import ProviderUiManager from feeluown.gui',
-              DeprecationWarning, stacklevel=2)
diff --git a/setup.cfg b/setup.cfg
index 00bb23f1ee..aefdcc865f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -27,6 +27,11 @@ test = pytest
 # ignore DeprecationWarning raised by feeluown
 filterwarnings =
     ignore:use feeluown.*?:DeprecationWarning
+
+# marshmallow may be not installed on some environment
+# If you want to ignore the warning in local envinronment,
+# you can run pytest like the following::
+#   pytest tests/ -W ignore::marshmallow.warnings.RemovedInMarshmallow4Warning
 addopts = -q
           --ignore=docs/
           --ignore-glob=*/**/mpv*.py
@@ -40,6 +45,7 @@ addopts = -q
           --cov-report=
           --cov=feeluown
           --doctest-modules
+asyncio_default_fixture_loop_scope = function
 [mypy-feeluown.mpv]
 ignore_errors = True
 
diff --git a/tests/app/conftest.py b/tests/app/conftest.py
index bc4aa44e82..f7f9291c6d 100644
--- a/tests/app/conftest.py
+++ b/tests/app/conftest.py
@@ -1,14 +1,18 @@
+import asyncio
+from unittest import mock
+
 import pytest
+import pytest_asyncio
 
 from feeluown.argparser import create_cli_parser
 from feeluown.app import create_config
 from feeluown.plugin import PluginsManager
 from feeluown.collection import CollectionManager
 from feeluown.utils.dispatch import Signal
+from feeluown.player import PlayerPositionDelegate
 
 
-@pytest.fixture
-@pytest.mark.asyncio
+@pytest_asyncio.fixture
 async def signal_aio_support():
     Signal.setup_aio_support()
     yield
@@ -41,3 +45,6 @@ def noharm(mocker):
     mocker.patch('feeluown.app.app.Player')
     mocker.patch.object(PluginsManager, 'enable_plugins')
     mocker.patch.object(CollectionManager, 'scan')
+    # To avoid resource leak::
+    #   RuntimeWarning: coroutine 'xxx' was never awaited
+    PlayerPositionDelegate.start = mock.MagicMock(return_value=asyncio.Future())
diff --git a/tests/app/test_app.py b/tests/app/test_app.py
index 318b7515e2..32bc9df337 100644
--- a/tests/app/test_app.py
+++ b/tests/app/test_app.py
@@ -6,8 +6,7 @@
 
 
 @skip("No easy way to simulate QEventLoop.")
-@pytest.mark.asyncio
-async def test_create_gui_app(args):
+def test_create_gui_app():
     pass
 
 
diff --git a/tests/app/test_server_app.py b/tests/app/test_server_app.py
index 1f657fd717..4d968e11b7 100644
--- a/tests/app/test_server_app.py
+++ b/tests/app/test_server_app.py
@@ -14,6 +14,7 @@ async def test_server_app_initialize(signal_aio_support, args, config, mocker,
     mock_connect_1 = mocker.patch.object(app.live_lyric.sentence_changed, 'connect')
     mock_connect_2 = mocker.patch.object(app.player.position_changed, 'connect')
     mock_connect_3 = mocker.patch.object(app.playlist.song_changed, 'connect')
+
     app.initialize()
 
     # live lyric should be initialized properly.
diff --git a/tests/entry_points/test_run_app.py b/tests/entry_points/test_run_app.py
index 682351ae9c..1f0f8ee1b2 100644
--- a/tests/entry_points/test_run_app.py
+++ b/tests/entry_points/test_run_app.py
@@ -1,6 +1,6 @@
 import asyncio
 import sys
-from unittest.mock import AsyncMock
+from unittest.mock import AsyncMock, MagicMock
 
 import pytest
 
@@ -10,6 +10,7 @@
 from feeluown.app import App, AppMode, get_app
 from feeluown.app.cli_app import CliApp
 from feeluown.plugin import PluginsManager
+from feeluown.version import VersionManager
 
 
 @pytest.fixture
@@ -72,6 +73,7 @@ def test_run_app_with_no_window_mode(argsparser, mocker, noqt, noharm):
 
 @pytest.mark.asyncio
 async def test_start_app(argsparser, mocker, noharm):
+    VersionManager.check_release = MagicMock(return_value=asyncio.Future())
     mocker.patch('feeluown.entry_points.run_app.fuoexec_load_rcfile')
     # fuoexec_init can be only called once, mock it here.
     mocker.patch('feeluown.entry_points.run_app.fuoexec_init')
diff --git a/tests/gui/pages/test_pages.py b/tests/gui/pages/test_pages.py
index 9d2f8eaf96..c8d518bf4a 100644
--- a/tests/gui/pages/test_pages.py
+++ b/tests/gui/pages/test_pages.py
@@ -1,10 +1,16 @@
+import asyncio
+from unittest import mock
+
 import pytest
+import pytest_asyncio
 
 from feeluown.library import BriefArtistModel, BriefAlbumModel, SongModel, \
     PlaylistModel
 from feeluown.utils.router import Request
 from feeluown.gui.pages.model import render as render_model
-from feeluown.gui.pages.song_explore import render as render_song_explore
+from feeluown.gui.pages.song_explore import (
+    render as render_song_explore, SongWikiLabel, CoverLabelV2,
+)
 from feeluown.gui.page_containers.table import TableContainer
 from feeluown.gui.uimain.page_view import RightPanel
 
@@ -21,6 +27,14 @@ def guiapp(qtbot, app_mock, library):
     return app_mock
 
 
+@pytest_asyncio.fixture
+async def no_warning():
+    # To avoid such warning::
+    #   RuntimeWarning: coroutine 'CoverLabelV2.show_cover' was never awaited
+    SongWikiLabel.show_song = mock.MagicMock(return_value=asyncio.Future())
+    CoverLabelV2.show_cover = mock.MagicMock(return_value=asyncio.Future())
+
+
 @pytest.mark.asyncio
 async def test_render_artist_v2(guiapp, ekaf_provider, ekaf_artist0, ):
     artistv2 = BriefArtistModel(source=ekaf_provider.identifier,
@@ -42,7 +56,7 @@ async def test_render_album_v2(guiapp, ekaf_provider, ekaf_album0, ):
 
 
 @pytest.mark.asyncio
-async def test_render_song_v2(guiapp, ekaf_provider):
+async def test_render_song_v2(guiapp, ekaf_provider, no_warning):
     song = SongModel(source=ekaf_provider.identifier,
                      identifier='0',
                      title='',
@@ -56,12 +70,14 @@ async def test_render_song_v2(guiapp, ekaf_provider):
 
 
 @pytest.mark.asyncio
-async def test_render_song_v2_with_non_exists_album(guiapp, ekaf_provider):
+async def test_render_song_v2_with_non_exists_album(guiapp, ekaf_provider, no_warning):
     """
     When the album does not exist, the rendering process should succeed.
     This test case tests that every exceptions, which raised by library, should
     be correctly catched.
     """
+    SongWikiLabel.show_song = mock.MagicMock(return_value=asyncio.Future())
+    CoverLabelV2.show_cover = mock.MagicMock(return_value=asyncio.Future())
     song = SongModel(source=ekaf_provider.identifier,
                      identifier='0',
                      title='',
diff --git a/tests/gui/widgets/test_widgets.py b/tests/gui/widgets/test_widgets.py
index ca7377b3f7..82919a7d45 100644
--- a/tests/gui/widgets/test_widgets.py
+++ b/tests/gui/widgets/test_widgets.py
@@ -20,7 +20,7 @@ def test_comment_list_view(qtbot):
                            content=content,
                            time=int(time.time()),
                            parent=brief_comment,)
-    comment2 = comment.copy()
+    comment2 = comment.model_copy()
     comment2.content = 'hello world'
 
     reader = create_reader([comment, comment2, comment])
diff --git a/tests/library/test_model_v2.py b/tests/library/test_model_v2.py
index 939a4969d8..6bc84675fa 100644
--- a/tests/library/test_model_v2.py
+++ b/tests/library/test_model_v2.py
@@ -4,14 +4,6 @@
 from feeluown.library import SongModel, BriefAlbumModel, BriefArtistModel, BriefSongModel
 
 
-def test_use_pydantic_from_orm(song):
-    # Raise a pydantic exception.
-    # For pydantic v1, pydantic.ConfigError is raised.
-    # FOr pydantic v2, pydantic.ValidationError is raised.
-    with pytest.raises(Exception):
-        BriefSongModel.from_orm(song)
-
-
 def test_create_song_model_basic():
     identifier = '1'
     brief_album = BriefAlbumModel(identifier='1', source='x',
diff --git a/tests/player/test_playlist.py b/tests/player/test_playlist.py
index 00efe8a911..410d8f7aa6 100644
--- a/tests/player/test_playlist.py
+++ b/tests/player/test_playlist.py
@@ -296,8 +296,13 @@ def feed_playlist():
 
 
 @pytest.mark.asyncio
-async def test_playlist_remove_current_song(app_mock):
-    pass
+async def test_playlist_remove_current_song(pl, song1, mocker):
+    # Remove the current song, and it is the last song in the playlist.
+    mock_emit = mocker.patch.object(pl.eof_reached, 'emit')
+    pl.mode = PlaylistMode.fm
+    pl._current_song = song1
+    pl.remove(song1)
+    assert mock_emit.called
 
 
 @pytest.mark.asyncio