Add a method to clear the data to QStandardItemModel

After the behavior of setItemData has been changed following QTBUG-45114,
QStandardItemModel was lacking an interface to clear all the data from a single index.

Task-number: QTBUG-69616
Change-Id: Ide0b5bb6358439fc42c474df8b044fbace6def8d
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: David Faure <david.faure@kdab.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/auto/gui/itemmodels/qstandarditem/tst_qstandarditem.cpp b/tests/auto/gui/itemmodels/qstandarditem/tst_qstandarditem.cpp
index a45539a041..d19aa9b54f 100644
--- a/tests/auto/gui/itemmodels/qstandarditem/tst_qstandarditem.cpp
+++ b/tests/auto/gui/itemmodels/qstandarditem/tst_qstandarditem.cpp
@@ -69,8 +69,20 @@ private slots:
     void sortChildren();
     void subclassing();
     void lessThan();
+    void clearData();
 };
 
+void tst_QStandardItem::clearData()
+{
+    QStandardItem item;
+    item.setData(QStringLiteral("Test"), Qt::EditRole);
+    item.setData(5, Qt::UserRole);
+    item.clearData();
+    QCOMPARE(item.data(Qt::EditRole), QVariant());
+    QCOMPARE(item.data(Qt::UserRole), QVariant());
+    QCOMPARE(item.data(Qt::DisplayRole), QVariant());
+}
+
 void tst_QStandardItem::ctor()
 {
     QStandardItem item;