1 files changed, 18 insertions, 0 deletions
diff --git a/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp b/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp
index cfa2ddc4cc..b66e30ad35 100644
--- a/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp
+++ b/tests/auto/widgets/widgets/qplaintextedit/tst_qplaintextedit.cpp
@@ -147,6 +147,9 @@ private slots:
     void contextMenu();
 #endif
     void inputMethodCursorRect();
+#if QT_CONFIG(scrollbar)
+    void updateAfterChangeCenterOnScroll();
+#endif
 
 private:
     void createSelection();
@@ -1727,5 +1730,20 @@ void tst_QPlainTextEdit::inputMethodCursorRect()
     QCOMPARE(cursorRectV.toRect(), cursorRect.toRect());
 }
 
+#if QT_CONFIG(scrollbar)
+// QTBUG-64730: Verify that the scrollbar is updated after center on scroll was set
+void tst_QPlainTextEdit::updateAfterChangeCenterOnScroll()
+{
+    ed->setPlainText("Line1\nLine2Line3\nLine3");
+    ed->show();
+    ed->setCenterOnScroll(true);
+    const int maxWithCenterOnScroll = ed->verticalScrollBar()->maximum();
+    ed->setCenterOnScroll(false);
+    const int maxWithoutCenterOnScroll = ed->verticalScrollBar()->maximum();
+    QVERIFY(maxWithCenterOnScroll > maxWithoutCenterOnScroll);
+}
+
+#endif
+
 QTEST_MAIN(tst_QPlainTextEdit)
 #include "tst_qplaintextedit.moc"