tests: add unit tests for error and warning message boxes

tests/unit_tests/test_error_utils.py

@@ -0,0 +1,63 @@
+from unittest.mock import patch
+
+import pytest
+import pytestqt
+from qtpy.QtWidgets import QMessageBox
+
+from bec_widgets.qt_utils.error_popups import ErrorPopupUtility, ExampleWidget
+
+
+@pytest.fixture
+def widget(qtbot):
+    test_widget = ExampleWidget()
+    qtbot.addWidget(test_widget)
+    qtbot.waitExposed(test_widget)
+    yield test_widget
+    test_widget.close()
+
+
+@patch.object(QMessageBox, "exec_", return_value=QMessageBox.Ok)
+def test_show_error_message_global(mock_exec, widget, qtbot):
+    error_utility = ErrorPopupUtility()
+    error_utility.enable_global_error_popups(True)
+
+    with qtbot.waitSignal(error_utility.error_occurred, timeout=1000) as blocker:
+        error_utility.error_occurred.emit("Test Error", "This is a test error message.", widget)
+
+    assert mock_exec.called
+    assert blocker.signal_triggered
+
+
+@pytest.mark.parametrize("global_pop", [False, True])
+@patch.object(QMessageBox, "exec_", return_value=QMessageBox.Ok)
+def test_slot_with_popup_on_error(mock_exec, widget, qtbot, global_pop):
+    error_utility = ErrorPopupUtility()
+    error_utility.enable_global_error_popups(global_pop)
+
+    with qtbot.waitSignal(error_utility.error_occurred, timeout=200) as blocker:
+        widget.method_with_error_handling()
+
+    assert blocker.signal_triggered
+    assert mock_exec.called
+
+
+@pytest.mark.parametrize("global_pop", [False, True])
+@patch.object(QMessageBox, "exec_", return_value=QMessageBox.Ok)
+def test_slot_no_popup_by_default_on_error(mock_exec, widget, qtbot, capsys, global_pop):
+    error_utility = ErrorPopupUtility()
+    error_utility.enable_global_error_popups(global_pop)
+
+    try:
+        with qtbot.waitSignal(error_utility.error_occurred, timeout=200) as blocker:
+            widget.method_without_error_handling()
+    except pytestqt.exceptions.TimeoutError:
+        assert not global_pop
+
+    if global_pop:
+        assert blocker.signal_triggered
+        assert mock_exec.called
+    else:
+        assert not blocker.signal_triggered
+        assert not mock_exec.called
+        stdout, stderr = capsys.readouterr()
+        assert "ValueError" in stderr