tests: fix py312 issues

tests/cli/output/test_player.py

@@ -302,7 +302,7 @@ class TestPlayerOutput:
         assert not playeroutput.player.terminate.called  # type: ignore
 
         playeroutput.close()
-        assert playeroutput.player.terminate.called_once  # type: ignore
+        assert playeroutput.player.terminate.call_count == 1  # type: ignore
 
     @pytest.mark.parametrize(("playeroutput", "mock_which", "expected", "warns"), [
         pytest.param(

tests/cli/test_main.py

@@ -567,6 +567,7 @@ class _TestCLIMainLogging(unittest.TestCase):
              patch("streamlink_cli.main.CONFIG_FILES", []), \
              patch("streamlink_cli.main.setup_streamlink"), \
              patch("streamlink_cli.main.setup_plugins"), \
+             patch("streamlink_cli.argparser.find_default_player"), \
              patch("streamlink.session.Streamlink.load_builtin_plugins"), \
              patch("sys.argv") as mock_argv:
             mock_argv.__getitem__.side_effect = lambda x: argv[x]

tests/mixins/stream_hls.py

@@ -231,7 +231,7 @@ class TestMixinStreamHLS(unittest.TestCase):
 
     def called(self, item, once=False):
         mock = self.get_mock(item)
-        return mock.called_once if once else mock.called
+        return mock.call_count == 1 if once else mock.called
 
     def url(self, item):
         return item.url(self.id())

tests/stream/test_dash.py

@@ -27,7 +27,7 @@ class TestDASHStreamParseManifest:
         response = requests_mock.register_uri("GET", "http://test/manifest.mpd", **getattr(request, "param", {}))
         called_once = "nomockedhttprequest" not in request.keywords
         yield
-        assert response.called_once is called_once
+        assert (response.call_count == 1) is called_once
 
     @pytest.fixture()
     def parse_xml(self, monkeypatch: pytest.MonkeyPatch):