1 files changed, 84 insertions, 7 deletions

diff --git a/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp b/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp
index f4fdacc..01ef9a2 100644
--- a/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp
+++ b/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp
@@ -384,6 +384,7 @@ private slots:
     void tabChangesFocus();
     void tabChangesFocus_data();
     void cacheMode();
+    void cacheMode2();
     void updateCachedItemAfterMove();
     void deviceTransform_data();
     void deviceTransform();
@@ -6824,6 +6825,9 @@ void tst_QGraphicsItem::cacheMode()
     QTRY_COMPARE(tester->repaints, 4);
     QCOMPARE(testerChild->repaints, 4);
     QCOMPARE(testerChild2->repaints, 3);
+    tester->resetTransform();
+    testerChild->resetTransform();
+    testerChild2->resetTransform();
 
     // Explicit update causes a repaint.
     tester->update(0, 0, 5, 5);
@@ -6897,23 +6901,24 @@ void tst_QGraphicsItem::cacheMode()
     // because the parent is rotated with a perspective.
     testerChild->setPos(1, 1);
     QTest::qWait(25);
-    QTRY_COMPARE(tester->repaints, 10);
+    QTRY_COMPARE(tester->repaints, 11);
     QCOMPARE(testerChild->repaints, 10);
     QCOMPARE(testerChild2->repaints, 5);
+    tester->resetTransform();
 
     // Make a huge item
     tester->setGeometry(QRectF(-4000, -4000, 8000, 8000));
     QTest::qWait(25);
-    QTRY_COMPARE(tester->repaints, 11);
-    QCOMPARE(testerChild->repaints, 10);
+    QTRY_COMPARE(tester->repaints, 12);
+    QCOMPARE(testerChild->repaints, 11);
     QCOMPARE(testerChild2->repaints, 5);
 
     // Move the large item - will cause a repaint as the
     // cache is clipped.
     tester->setPos(5, 0);
     QTest::qWait(25);
-    QTRY_COMPARE(tester->repaints, 12);
-    QCOMPARE(testerChild->repaints, 10);
+    QTRY_COMPARE(tester->repaints, 13);
+    QCOMPARE(testerChild->repaints, 11);
     QCOMPARE(testerChild2->repaints, 5);
 
     // Hiding and showing should invalidate the cache
@@ -6921,11 +6926,83 @@ void tst_QGraphicsItem::cacheMode()
     QTest::qWait(25);
     tester->show();
     QTest::qWait(25);
-    QTRY_COMPARE(tester->repaints, 13);
-    QCOMPARE(testerChild->repaints, 11);
+    QTRY_COMPARE(tester->repaints, 14);
+    QCOMPARE(testerChild->repaints, 12);
     QCOMPARE(testerChild2->repaints, 6);
 }
 
+void tst_QGraphicsItem::cacheMode2()
+{
+    QGraphicsScene scene(0, 0, 100, 100);
+    QGraphicsView view(&scene);
+    view.resize(150, 150);
+    view.show();
+    QApplication::setActiveWindow(&view);
+    QTest::qWaitForWindowShown(&view);
+
+    // Increase the probability of window activation
+    // not causing another repaint of test items.
+    QTest::qWait(50);
+
+    EventTester *tester = new EventTester;
+    scene.addItem(tester);
+    QTest::qWait(10);
+    QTRY_COMPARE(tester->repaints, 1);
+
+    // Switching from NoCache to NoCache (no repaint)
+    tester->setCacheMode(QGraphicsItem::NoCache);
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 1);
+
+    // Switching from NoCache to DeviceCoordinateCache (no repaint)
+    tester->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 1);
+
+    // Switching from DeviceCoordinateCache to DeviceCoordinateCache (no repaint)
+    tester->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 1);
+
+    // Switching from DeviceCoordinateCache to NoCache (no repaint)
+    tester->setCacheMode(QGraphicsItem::NoCache);
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 1);
+
+    // Switching from NoCache to ItemCoordinateCache (repaint)
+    tester->setCacheMode(QGraphicsItem::ItemCoordinateCache);
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 2);
+
+    // Switching from ItemCoordinateCache to ItemCoordinateCache (no repaint)
+    tester->setCacheMode(QGraphicsItem::ItemCoordinateCache);
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 2);
+
+    // Switching from ItemCoordinateCache to ItemCoordinateCache with different size (repaint)
+    tester->setCacheMode(QGraphicsItem::ItemCoordinateCache, QSize(100, 100));
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 3);
+
+    // Switching from ItemCoordinateCache to NoCache (repaint)
+    tester->setCacheMode(QGraphicsItem::NoCache);
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 4);
+
+    // Switching from DeviceCoordinateCache to ItemCoordinateCache (repaint)
+    tester->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 4);
+    tester->setCacheMode(QGraphicsItem::ItemCoordinateCache);
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 5);
+
+    // Switching from ItemCoordinateCache to DeviceCoordinateCache (repaint)
+    tester->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
+    QTest::qWait(50);
+    QTRY_COMPARE(tester->repaints, 6);
+}
+
 void tst_QGraphicsItem::updateCachedItemAfterMove()
 {
     // A simple item that uses ItemCoordinateCache