Documentation/Widget testing

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Overview

Testing of both CTK widgets and application built on top of CTK could leverage the capabilities offered by the QtTesting library developed by Paraview folks.

If the option CTK_USE_QTTESTING is enabled, the build system will:

• Download external project QtTesting
• Include the event translator and player required for custom CTK widgets. (Located in the same folder as their associated widget sources)
• Include the class ctkEventTranslaterPlayerWidget into CTKWidgets library
• If BUILD_TESTING is enabled: CTK widgets EventTranslatorTests will be compiled. These tests will use ctkEventTranslaterPlayerWidget and ensure that events associated with CTK widgets can be properly recorded and played.

Note: Option CTK_USE_QTTESTING will be automatically enabled if BUILD_TESTING is ON

Milestones

1. Integrate QtTesting has an external projects
2. Add unit test to all the widget - Below, the summuray table -
   1. Implement ctkEventTranslaterPlayerWidget
   2. Create custom translator/player if needed
   3. Implement widgets EventTranslatorTests
3. Create an Application test - ctkQtTesting -

Player/Translators Widget Testing

CTKWidgets Widgets State Priority Notes ctkActionsWidget ctkAddRemoveComboBox ctkAxesWidget Translator/player implemented ctkBasePopupWidget +++ ctkPopupWidget inherit of it. So we Test Directly ctkPopupWidget ctkButtonGroup ctkCheckableComboBox + minor issue with the currentText() ctkCheckableHeaderView ++ more test ? ctkCheckBoxPixmaps -- Not used in Slicer ctkCheckablePushButton -- Not used in Slicer ctkComboBox ctkCompleter - ctkCollapsibleButton ctkCollapsibleGroupBox ctkColorDialog QSpinBox issue if used ctkColorPickerButton QSpinBox issue if used ctkConsole May have a problem with the command ctkConfirmExitDialog - ctkCoordinatesWidget Problem with the QSpinBox ctkCrosshairLabel - ctkDateRangeWidget Problem with QDateTimer ctkDirectoryButton Value OK but no dialog ctkDoubleRangeSlider ctkDoubleSlider ctkDynamicSpacer - ctkErrorLogStatusMessageHandler --- Not a Widget ctkErrorLogWidget --- ctkExpandButton ctkFileDialog EventTranslator ? ctkFittedTextBrowser -- This widget just display text. ctkFlowLayout -- Layout are not tested through the event translator/player mechanism ctkFontButton QComboBox doesn't change the font ctkIconEnginePlugin -- Plugin are not tested through the event translator/player mechanism ctkLayoutManager ctkMaterialPropertyPreviewLabel Not sure if something is requiered since it seems to be a label ctkMaterialPropertyWidget QSpinBox issue ctkMatrixWidget Skip all the visual effect ctkMenuButton Use in Slicer ? Implemented event translator/player ctkMenuComboBox +++ Issue if the subMenus have no parent ctkModalityWidget ctkPathLineEdit ++ Little issue with the listView for the fist show - As ctkMenuComboBox ctkPixmapIconEngine ++ ctkPopupWidget + Implemented event translator/player ctkQImageView --- ctkRangeSlider ctkRangeWidget QDoubleSpinBox issue ctkScreenshotDialog - ctkSearchBox ctkSettings + Need a Test ? ctkSettingsDialog + ctkSettingsPanel + It's a panel so doesn't need to be tested. However, is tested in ctkSettingsDialog testing ctkSignalMapper This object is not a widget and doesn't have to be tested through the event translator/player mechanism ctkSimpleLayoutManager ctkSliderWidget QSpinBox Issue ctkTestApplication This is a utility class. Shouldn't be tested using the event translator/player mechanism ctkThumbnailListWidget -- ctkThumbnailWidget -- ctkToolTipTrapper This is a utility class. Shouldn't be tested using the event translator/player mechanism ctkTransferFunctionBarsItem - ctkTransferFunctionControlPointsItem - ctkTransferFunctionGradientItem - ctkTransferFunctionItem - ctkTransferFunctionScene - ctkTransferFunctionView - ctkTreeComboBox + Good method ? - Spy count error ctkWidgetsUtils This is a utility class. Shouldn't be tested using the event translator/player mechanism ctkWorkflowAbstractPagedWidget - ctkWorkflowButtonBoxWidget - ctkWorkflowGroupBox - ctkWorkflowStackedWidget - ctkWorkflowTabWidget - ctkWorkflowWidget - ctkWorkflowWidgetStep -

CTKVisualizationVTKWidgets Widgets State Priority Notes ctkVTKAbstractMatrixWidget Tested in ctkVTKMatrixWidget ctkVTKAbstractView +++ Tested in ctkVTKRenderView ctkVTKChartView ctkVTKDataSetArrayComboBox ctkVTKDataSetModel ctkVTKMagnifyView - ctkVTKMatrixWidget use ctkMatrixWidget translator & player ctkVTKRenderView +++ Translator/Player implemented What we want : - Wheel event - Record the widget size - Resize the view before the playback - Add QMessageBox to prevent the user - BUG - ctkVTKScalarBarWidget QSpinBox issue + key "."(pad) on the line edit ctkVTKScalarsToColorsUtils ctkVTKScalarsToColorsView ctkVTKScalarsToColorsWidget ctkVTKSliceView +++ may use the ctkVTKRenderView translator & player ctkVTKSurfaceMaterialPropertyWidget ctkVTKTextPropertyWidget ctkVTKThresholdWidget ctkVTKThumbnailView ctkVTKVolumePropertyWidget ctkVTKWidgetsUtils CTKDICOMWidgets Widgets State Priority Notes ctkDICOMAppWidget ctkDICOMDatasetView ctkDICOMDirectoryListWidget ctkDICOMImage ctkDICOMImportWidget ctkDICOMItemTreeModel ctkDICOMListenerWidget ctkDICOMQueryResultsTabWidget ctkDICOMQueryRetrieveWidget ctkDICOMQueryWidget ctkDICOMServerNodeWidget ctkDICOMThumbnailGenerator ctkDICOMThumbnailListWidget

Issues found on QtTesting

• QSpinBox/QDoubleSpinBox :
  • A long click on the up/down arrow -> just one click even if the value change severals times.
  • Fast click -> Double click -> no effect.
  • clik on the up/down arrow just after editing the spin Box -> no effect.

Solve : Contribution to the QtTesting by modified the pqSpinBoxEventTranslator - Push on my local branch -

• In pq3DView :
  • The scroll button has no effect - Implemented for ctk.
  • Shift between the current/Expected image.

Solve : new Implementation with the ctkVTKRenderViewEventTranslator and the ctkVTKRenderViewEventPlayer :

1. Change the normalization into a normalization by the widget center.
2. Implemented the scroll action
3. Add a better rounded when we cast from double to int to not have shift issue.

• QComboBox when it is editable :
  • The hight-event "set_sting" crash if we edit the comboBox.
    • Exemple : If we have an item "foo", we are going to edit the comboBox with "f", but the item "f" doesn't exist, and the player will crash.

Solve : ...

Screenshots

• 

  Simple application with recording / playing Qt testing capabilities

• 

  Little exemple of the widget testing