Containers: add member-swap

Member-swap is required by the STL Sequence concept, but is also needed to write exception-safe code.

Merge-request: 871
Reviewed-by: Olivier Goffart <olivier.goffart@nokia.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/tests/auto/qbytearray/tst_qbytearray.cpp b/tests/auto/qbytearray/tst_qbytearray.cpp
index 0dc2282fcd..c291c6afb7 100644
--- a/tests/auto/qbytearray/tst_qbytearray.cpp
+++ b/tests/auto/qbytearray/tst_qbytearray.cpp
@@ -71,6 +71,7 @@ public slots:
     void init();
     void cleanup();
 private slots:
+    void swap();
     void qCompress_data();
 #ifndef QT_NO_COMPRESS
     void qCompress();
@@ -453,6 +454,14 @@ void tst_QByteArray::split()
     QCOMPARE(list.count(), size);
 }
 
+void tst_QByteArray::swap()
+{
+    QByteArray b1 = "b1", b2 = "b2";
+    b1.swap(b2);
+    QCOMPARE(b1, QByteArray("b2"));
+    QCOMPARE(b2, QByteArray("b1"));
+}
+
 void tst_QByteArray::base64_data()
 {
     QTest::addColumn<QByteArray>("rawdata");