fix(bec_widgets): adapt to bec_qthemes 1.0; themes can be only applied on living Qt objects

tests/unit_tests/conftest.py

@@ -8,6 +8,7 @@ from bec_lib import messages
 from bec_lib.messages import _StoredDataInfo
 from bec_qthemes import apply_theme
 from pytestqt.exceptions import TimeoutError as QtBotTimeoutError
+from qtpy.QtCore import QEvent, QEventLoop
 from qtpy.QtWidgets import QApplication, QMessageBox
 
 from bec_widgets.cli.rpc.rpc_register import RPCRegister
@@ -24,9 +25,15 @@ def pytest_runtest_makereport(item, call):
     item.stash["failed"] = rep.failed
 
 
+def process_all_deferred_deletes(qapp):
+    qapp.sendPostedEvents(None, QEvent.DeferredDelete)
+    qapp.processEvents(QEventLoop.AllEvents)
+
+
 @pytest.fixture(autouse=True)
 def qapplication(qtbot, request, testable_qtimer_class):  # pylint: disable=unused-argument
     qapp = QApplication.instance()
+    process_all_deferred_deletes(qapp)
     apply_theme("light")
     qapp.processEvents()
 

tests/unit_tests/test_abort_button.py

@@ -17,10 +17,6 @@ def abort_button(qtbot, mocked_client):
 
 def test_abort_button(abort_button):
     assert abort_button.button.text() == "Abort"
-    assert (
-        abort_button.button.styleSheet()
-        == "background-color:  #666666; color: white; font-weight: bold; font-size: 12px;"
-    )
     abort_button.button.click()
     assert abort_button.queue.request_scan_abortion.called
     abort_button.close()

tests/unit_tests/test_color_utils.py

@@ -144,6 +144,19 @@ class ExamplePlotWidget(BECWidget, QWidget):
         self.glw.addItem(self.pi)
         self.pi.plot([1, 2, 3, 4, 5], pen="r")
 
+    def cleanup_pyqtgraph(self, item: pg.PlotItem | None = None):
+        """Cleanup pyqtgraph items."""
+        if item is None:
+            item = self.pi
+        item.vb.menu.close()
+        item.vb.menu.deleteLater()
+        item.ctrlMenu.close()
+        item.ctrlMenu.deleteLater()
+
+    def cleanup(self):
+        self.cleanup_pyqtgraph()
+        super().cleanup()
+
 
 def test_apply_theme(qtbot, mocked_client):
     widget = create_widget(qtbot, ExamplePlotWidget, client=mocked_client)

tests/unit_tests/test_round_frame.py

@@ -42,18 +42,6 @@ def test_set_radius(basic_rounded_frame):
     assert basic_rounded_frame.radius == 20
 
 
-def test_apply_theme_light(plot_rounded_frame):
-    plot_rounded_frame.apply_theme("light")
-
-    assert plot_rounded_frame.background_color == "#e9ecef"
-
-
-def test_apply_theme_dark(plot_rounded_frame):
-    plot_rounded_frame.apply_theme("dark")
-
-    assert plot_rounded_frame.background_color == "#141414"
-
-
 def test_apply_plot_widget_style(plot_rounded_frame):
     # Verify that a PlotWidget can have its style applied
     plot_rounded_frame.apply_plot_widget_style(border="1px solid red")