QVarLengthArray: add squeeze function

Add function to move back data to the stack.

Change-Id: Ic78a368459bce68629e29602e4eeae2e1afe398b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp b/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp
index bda3a2596f..c19080e345 100644
--- a/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp
+++ b/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp
@@ -58,6 +58,7 @@ private slots:
     void count();
     void first();
     void last();
+    void squeeze();
 };
 
 int fooCtor = 0;
@@ -653,5 +654,28 @@ void tst_QVarLengthArray::last()
     QCOMPARE(list.length(), 1);
 }
 
+void tst_QVarLengthArray::squeeze()
+{
+    QVarLengthArray<int> list;
+    int sizeOnStack = list.capacity();
+    int sizeOnHeap = sizeOnStack * 2;
+    list.resize(0);
+    QCOMPARE(list.capacity(), sizeOnStack);
+    list.resize(sizeOnHeap);
+    QCOMPARE(list.capacity(), sizeOnHeap);
+    list.resize(sizeOnStack);
+    QCOMPARE(list.capacity(), sizeOnHeap);
+    list.resize(0);
+    QCOMPARE(list.capacity(), sizeOnHeap);
+    list.squeeze();
+    QCOMPARE(list.capacity(), sizeOnStack);
+    list.resize(sizeOnStack);
+    list.squeeze();
+    QCOMPARE(list.capacity(), sizeOnStack);
+    list.resize(sizeOnHeap);
+    list.squeeze();
+    QCOMPARE(list.capacity(), sizeOnHeap);
+}
+
 QTEST_APPLESS_MAIN(tst_QVarLengthArray)
 #include "tst_qvarlengtharray.moc"