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Figure 16-2. A spin box widget The QTEST_MAIN function macro treats unit tests intended to test widgets and those to test other aspects of an application equally. The project file doesn t have to be changed, either. By building and running the unit test shown previously, you get a list of passed test cases.

You ve run into the same redundancy problem as with the QDate class the unit test of QSpinBox contains a lot of duplicated code. The solution is to convert the tests into data-driven tests, which is done in exactly the same way regardless of the class being tested. All test cases are converted in similar ways, so start by focusing on the testKeys slot. The new version of the slot is shown along with testKeys_data in Listing 16-19. Most of the source code shown in the listing should be clear. However, the two highlighted lines are important. When you add a column of the type Qt::Key, you see a compilation error if you do not declare it as a meta-type. The registration is made by using the Q_DECLARE_METATYPE macro. The test case works like all data-driven tests: It fetches data using QFETCH and uses the data before using QTEST to check the outcome of the test. Listing 16-19. Testing keyboard interaction using a data-driven test case Q_DECLARE_METATYPE( Qt::Key ) void SpinBoxTest::testKeys() { QSpinBox spinBox; spinBox.setRange( 1, 10 ); QFETCH( Qt::Key, key ); QFETCH( int, startValue ); spinBox.setValue( startValue ); QTest::keyClick( &spinBox, key ); QTEST( spinBox.value(), "endValue" ); } void SpinBoxTest::testKeys_data() { QTest::addColumn<Qt::Key>( "key" ); QTest::addColumn<int>( "startValue" ); QTest::addColumn<int>( "endValue" ); QTest::newRow( QTest::newRow( QTest::newRow( QTest::newRow( } void SpinBoxTest::testClicks() { QSpinBox spinBox; spinBox.setRange( 1, 10 ); "Up" ) << Qt::Key_Up << 5 << 6; "Down" ) << Qt::Key_Down << 5 << 4; "Up, limit" ) << Qt::Key_Up << 10 << 10; "Down, limit" ) << Qt::Key_Down << 1 << 1;

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As you can see, when using client-side GUI objects, the Atlas framework gives you a nice, script-based, object-oriented approach that will make your coding a lot simpler.

QSize size = spinBox.size(); QPoint upButton = QPoint( size.width()-2, 2 ); QPoint downButton = QPoint( size.width()-2, size.height()-2 ); QFETCH( QString, direction ); QFETCH( int, startValue ); spinBox.setValue( startValue ); if( direction.toLower() == "up" ) QTest::mouseClick( &spinBox, Qt::LeftButton, 0, upButton ); else if (direction.toLower() == "down" ) QTest::mouseClick( &spinBox, Qt::LeftButton, 0, downButton ); else QWARN( "Unknown direction - no clicks issued." ); QTEST( spinBox.value(), "endValue" ); } void SpinBoxTest::testClicks_data() { QTest::addColumn<QString>( "direction" ); QTest::addColumn<int>( "startValue" ); QTest::addColumn<int>( "endValue" ); QTest::newRow( QTest::newRow( QTest::newRow( QTest::newRow( } void SpinBoxTest::testSetting() { QSpinBox spinBox; spinBox.setRange( 1, 10 ); QFETCH( int, value ); spinBox.setValue( value ); QTEST( spinBox.value(), "endValue" ); } void SpinBoxTest::testSetting_data() { QTest::addColumn<int>( "value" ); QTest::addColumn<int>( "endValue" ); "Up" ) << "Up" << 5 << 6; "Down" ) << "Down" << 5 << 4; "Up, limit" ) << "Up" << 10 << 10; "Down, limit" ) << "Down" << 1 << 1;

Figure 2-7. Code activity control within Sequential workflow Again, you could add all the functionality that was just automatically created for you in code if you wanted to. To see how the handler was created, right-click the InitializeComponent() line of code within the New sub and choose Goto Definition. You don t want to change this code; the designer created it for you. The following line of code adds the handler ExecuteCode to the Step1 Code activity: AddHandler Me.Step1.ExecuteCode, AddressOf Me.Step1_ExecuteCode There s also the following line of code: Private WithEvents Step1 As System.Workflow.Activities.CodeActivity This creates a private variable called Step1, which is a CodeActivity class. Again, you could do all this with your own code, but it s much easier with the built-in designers. To best demonstrate how this activity and the workflow work, add a line of code to the ExecuteCode sub that opens a message box with a prompt of Step1 : Private Sub Step1_ExecuteCode(ByVal sender As System.Object, ByVal e As System.EventArgs) MsgBox("Step1") End Sub Execute the application. You see the console window appear. The message box then appears. It might be hidden behind the console window, but it appears in your taskbar. Add a second Code activity control to the workflow after the Step1 Code activity. Give this Code activity

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