QtTest: add toString(QUuid)

[ChangeLog][QtTest] QUuids are now printed on failure.

Change-Id: I39a7b9169aef8ab6ef5ce0790920547af23bd1b9
Reviewed-by: Milian Wolff <milian.wolff@kdab.com>

src/testlib/qtest.h

@@ -53,6 +53,7 @@
 #include <QtCore/qobject.h>
 #include <QtCore/qvariant.h>
 #include <QtCore/qurl.h>
+#include <QtCore/quuid.h>
 
 #include <QtCore/qpoint.h>
 #include <QtCore/qsize.h>
@@ -164,6 +165,11 @@ template<> inline char *toString(const QUrl &uri)
     return qstrdup(uri.toEncoded().constData());
 }
 
+template <> inline char *toString(const QUuid &uuid)
+{
+    return qstrdup(uuid.toByteArray().constData());
+}
+
 template<> inline char *toString(const QVariant &v)
 {
     QByteArray vstring("QVariant(");