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, 11 insertions, 0 deletions

diff --git a/tests/auto/qset/tst_qset.cpp b/tests/auto/qset/tst_qset.cpp
index 319cdf4..6f377f5 100644
--- a/tests/auto/qset/tst_qset.cpp
+++ b/tests/auto/qset/tst_qset.cpp
@@ -65,6 +65,7 @@ public:
 
 private slots:
     void operator_eq();
+    void swap();
     void size();
     void capacity();
     void reserve();
@@ -145,6 +146,16 @@ void tst_QSet::operator_eq()
     }
 }
 
+void tst_QSet::swap()
+{
+    QSet<int> s1, s2;
+    s1.insert(1);
+    s2.insert(2);
+    s1.swap(s2);
+    QCOMPARE(*s1.begin(),2);
+    QCOMPARE(*s2.begin(),1);
+}
+
 void tst_QSet::size()
 {
     QSet<int> set;