QVarLengthArray: add {const_,reverse_iterator}, {c,}r{begin,end}()

[ChangeLog][QtCore][QVarLengthArray] Added rbegin(), crbegin(), rend(), crend(),
and reverse_iterator and const_reverse_iterator typedefs.

Task-number: QTBUG-25919
Change-Id: Ifda5d420802a3594c3181f54036279f16a7da16e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp b/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp
index 60f3009849..449fefbaa2 100644
--- a/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp
+++ b/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp
@@ -47,6 +47,7 @@ private slots:
     void appendCausingRealloc();
     void resize();
     void realloc();
+    void reverseIterators();
     void count();
     void first();
     void last();
@@ -563,6 +564,21 @@ void tst_QVarLengthArray::realloc()
     QVERIFY(reallocTestProceed);
 }
 
+void tst_QVarLengthArray::reverseIterators()
+{
+    QVarLengthArray<int> v;
+    v << 1 << 2 << 3 << 4;
+    QVarLengthArray<int> vr = v;
+    std::reverse(vr.begin(), vr.end());
+    const QVarLengthArray<int> &cvr = vr;
+    QVERIFY(std::equal(v.begin(), v.end(), vr.rbegin()));
+    QVERIFY(std::equal(v.begin(), v.end(), vr.crbegin()));
+    QVERIFY(std::equal(v.begin(), v.end(), cvr.rbegin()));
+    QVERIFY(std::equal(vr.rbegin(), vr.rend(), v.begin()));
+    QVERIFY(std::equal(vr.crbegin(), vr.crend(), v.begin()));
+    QVERIFY(std::equal(cvr.rbegin(), cvr.rend(), v.begin()));
+}
+
 void tst_QVarLengthArray::count()
 {
     // tests size(), count() and length(), since they're the same thing