CBOR: Add QDebug operators for the Qt CBOR value-like types

I added a function that returns the string identifiers for
QCborKnownTags and QCborSimpleType, in order to facilitate writing a
QTest::toString for those types, as neither enum is part of a Q_OBJECT
or Q_GADGET class.

Change-Id: I56b444f9d6274221a3b7fffd150d2d26a1925c19
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/corelib/serialization/qcbormap.cpp b/src/corelib/serialization/qcbormap.cpp
index f7d58ca90b..46ac9c1ec8 100644
--- a/src/corelib/serialization/qcbormap.cpp
+++ b/src/corelib/serialization/qcbormap.cpp
@@ -1550,4 +1550,18 @@ void QCborMap::detach(qsizetype reserved)
     \sa operator+=(), operator-()
 */
 
+#if !defined(QT_NO_DEBUG_STREAM)
+QDebug operator<<(QDebug dbg, const QCborMap &m)
+{
+    QDebugStateSaver saver(dbg);
+    dbg.nospace() << "QCborMap{";
+    const char *open = "{";
+    for (auto pair : m) {
+        dbg << open << pair.first <<  ", " << pair.second << '}';
+        open = ", {";
+    }
+    return dbg << '}';
+}
+#endif
+
 QT_END_NAMESPACE