QAbstractItemModel: implement QRegularExpression support for match

This is part of the migration of qtbase from QRexExp to
QRegularExpression.

[ChangeLog][QtCore][QAbstractItemModel] The match() method now
supports the new Qt::RegularExpression match flag value. This
will allow users to use either a string or a fully configured
QRegularExpression when doing searches. In the second case,
the case sensitivity flag will be ignored if passed.

Task-number: QTBUG-72587
Change-Id: I07c8d72a661c48b7f4fcf13ef8e95980bcdcb998
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/auto/corelib/itemmodels/qabstractitemmodel/tst_qabstractitemmodel.cpp b/tests/auto/corelib/itemmodels/qabstractitemmodel/tst_qabstractitemmodel.cpp
index f305edb2c5..9fab36deaa 100644
--- a/tests/auto/corelib/itemmodels/qabstractitemmodel/tst_qabstractitemmodel.cpp
+++ b/tests/auto/corelib/itemmodels/qabstractitemmodel/tst_qabstractitemmodel.cpp
@@ -458,6 +458,34 @@ void tst_QAbstractItemModel::match()
     res = model.match(start, Qt::DisplayRole, QVariant("bat"), -1,
                       Qt::MatchFixedString | Qt::MatchCaseSensitive);
     QCOMPARE(res.count(), 1);
+
+    res = model.match(start, Qt::DisplayRole, QVariant(".*O.*"), -1,
+                      Qt::MatchRegularExpression);
+    QCOMPARE(res.count(), 2);
+    res = model.match(start, Qt::DisplayRole, QVariant(".*O.*"), -1,
+                      Qt::MatchRegularExpression | Qt::MatchCaseSensitive);
+    QCOMPARE(res.count(), 0);
+
+    res = model.match(start, Qt::DisplayRole, QVariant(QRegularExpression(".*O.*")),
+                      -1, Qt::MatchRegularExpression);
+    QCOMPARE(res.count(), 0);
+    res = model.match(start,
+                      Qt::DisplayRole,
+                      QVariant(QRegularExpression(".*O.*",
+                                                  QRegularExpression::CaseInsensitiveOption)),
+                      -1,
+                      Qt::MatchRegularExpression);
+    QCOMPARE(res.count(), 2);
+
+    // Ensure that the case sensitivity is properly ignored when passing a
+    // QRegularExpression object.
+    res = model.match(start,
+                      Qt::DisplayRole,
+                      QVariant(QRegularExpression(".*O.*",
+                                                  QRegularExpression::CaseInsensitiveOption)),
+                      -1,
+                      Qt::MatchRegularExpression | Qt::MatchCaseSensitive);
+    QCOMPARE(res.count(), 2);
 }
 
 typedef QPair<int, int> Position;