1 files changed, 107 insertions, 0 deletions
diff --git a/tests/auto/quickcontrols/qquickcontainer/tst_qquickcontainer.cpp b/tests/auto/quickcontrols/qquickcontainer/tst_qquickcontainer.cpp
new file mode 100644
index 0000000000..ce95f2cc37
--- /dev/null
+++ b/tests/auto/quickcontrols/qquickcontainer/tst_qquickcontainer.cpp
@@ -0,0 +1,107 @@
+// Copyright (C) 2024 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include <QtTest>
+#include <QtQuickTemplates2/private/qquickcontainer_p.h>
+#include <QtQuickControls2/qquickstyle.h>
+#include <QtQuickTest/QtQuickTest>
+#include <QtQuickTestUtils/private/qmlutils_p.h>
+#include <QtQuickTestUtils/private/visualtestutils_p.h>
+#include <QtQuickControlsTestUtils/private/controlstestutils_p.h>
+
+using namespace QQuickVisualTestUtils;
+using namespace QQuickControlsTestUtils;
+
+class tst_qquickcontainer : public QQmlDataTest
+{
+    Q_OBJECT
+
+public:
+    tst_qquickcontainer();
+
+private slots:
+    void zeroSize_data();
+    void zeroSize();
+};
+
+tst_qquickcontainer::tst_qquickcontainer()
+    : QQmlDataTest(QT_QMLTEST_DATADIR)
+{
+    qputenv("QML_NO_TOUCH_COMPRESSION", "1");
+
+    QQuickStyle::setStyle("Basic");
+}
+
+void tst_qquickcontainer::zeroSize_data()
+{
+    QTest::addColumn<QString>("qmlFileName");
+    QTest::addColumn<bool>("isItemView");
+
+    QTest::newRow("ListView") << "zeroSizeWithListView.qml" << true;
+    // See QQuickContainerPrivate::maybeCullItem for why this is false.
+    QTest::newRow("Repeater") << "zeroSizeWithRepeater.qml" << false;
+}
+
+// Tests that a zero-size Container with a QQuickItemView sub-class culls its items.
+// Based on a use case involving SwipeView: QTBUG-125416
+void tst_qquickcontainer::zeroSize()
+{
+    QFETCH(QString, qmlFileName);
+    QFETCH(bool, isItemView);
+
+    QQuickControlsApplicationHelper helper(this, qmlFileName);
+    QVERIFY2(helper.ready, helper.failureMessage());
+    centerOnScreen(helper.window);
+    helper.window->show();
+    QVERIFY(QTest::qWaitForWindowExposed(helper.window));
+
+    auto *text1 = helper.window->property("text1").value<QQuickItem *>();
+    QVERIFY(text1);
+    QCOMPARE(QQuickItemPrivate::get(text1)->culled, isItemView);
+
+    auto *text2 = helper.window->property("text2").value<QQuickItem *>();
+    QVERIFY(text2);
+    QCOMPARE(QQuickItemPrivate::get(text2)->culled, isItemView);
+
+    auto *text3 = helper.window->property("text3").value<QQuickItem *>();
+    QVERIFY(text3);
+    QCOMPARE(QQuickItemPrivate::get(text3)->culled, isItemView);
+
+    // Add an item and check that it's culled appropriately.
+    QVERIFY(QMetaObject::invokeMethod(helper.window, "addTextItem"));
+    auto *container = helper.window->property("container").value<QQuickContainer *>();
+    QVERIFY(container);
+    auto *text4 = container->itemAt(3);
+    QVERIFY(text4);
+    QCOMPARE(QQuickItemPrivate::get(text4)->culled, isItemView);
+
+    // Give it a non-zero size (via its parent, which it fills).
+    container->parentItem()->setWidth(text1->implicitWidth());
+    container->parentItem()->setHeight(text1->implicitHeight());
+    if (isItemView) {
+        QVERIFY(QQuickTest::qIsPolishScheduled(helper.window));
+        QVERIFY(QQuickTest::qWaitForPolish(helper.window));
+    }
+    QCOMPARE(QQuickItemPrivate::get(text1)->culled, false);
+    // This one won't be culled for views either, because of cacheBuffer (and
+    // clipping apparently doesn't affect culling, if we were to set clip to true).
+    QCOMPARE(QQuickItemPrivate::get(text2)->culled, false);
+    QCOMPARE(QQuickItemPrivate::get(text3)->culled, isItemView);
+    QCOMPARE(QQuickItemPrivate::get(text4)->culled, isItemView);
+
+    // Go back to a zero size.
+    container->parentItem()->setWidth(0);
+    container->parentItem()->setHeight(0);
+    if (isItemView) {
+        QVERIFY(QQuickTest::qIsPolishScheduled(helper.window));
+        QVERIFY(QQuickTest::qWaitForPolish(helper.window));
+    }
+    QCOMPARE(QQuickItemPrivate::get(text1)->culled, isItemView);
+    QCOMPARE(QQuickItemPrivate::get(text2)->culled, isItemView);
+    QCOMPARE(QQuickItemPrivate::get(text3)->culled, isItemView);
+    QCOMPARE(QQuickItemPrivate::get(text4)->culled, isItemView);
+}
+
+QTEST_MAIN(tst_qquickcontainer)
+
+#include "tst_qquickcontainer.moc"