2 files changed, 145 insertions, 0 deletions
diff --git a/tests/benchmarks/corelib/tools/qset/main.cpp b/tests/benchmarks/corelib/tools/qset/main.cpp
new file mode 100644
index 0000000000..744cc745d3
--- /dev/null
+++ b/tests/benchmarks/corelib/tools/qset/main.cpp
@@ -0,0 +1,141 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QSet>
+#include <QTest>
+
+class tst_QSet : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void intersect_int_data();
+    void intersect_int();
+    void intersect_complexType_data();
+    void intersect_complexType();
+};
+
+void tst_QSet::intersect_int_data()
+{
+    QTest::addColumn<int>("lhsSize");
+    QTest::addColumn<int>("rhsSize");
+    QTest::addColumn<int>("intersectSize");
+
+    QTest::newRow("1000000.intersect(1000) = empty") << 1000000 << 1000 << 0;
+    QTest::newRow("1000.intersect(1000000) = empty") << 1000 << 1000000 << 0;
+    QTest::newRow("1000000.intersect(1000) = 500") << 1000000 << 1000 << 500;
+    QTest::newRow("1000.intersect(1000000) = 500") << 1000 << 1000000 << 500;
+    QTest::newRow("1000000.intersect(1000) = 1000") << 1000000 << 1000 << 1000;
+    QTest::newRow("1000.intersect(1000000) = 1000") << 1000 << 1000000 << 1000;
+}
+
+void tst_QSet::intersect_int()
+{
+    QFETCH(int, lhsSize);
+    QFETCH(int, rhsSize);
+    QFETCH(int, intersectSize);
+
+    // E.g. when lhsSize = 1000, rhsSize = 1000000 and intersectSize = 500:
+    // lhsSize = { 0, 1, ... 1000 }
+    // rhsSize = { 500, 501, ... 1000500 }
+
+    QSet<int> lhs;
+    for (int i = 0; i < lhsSize; ++i)
+        lhs.insert(i);
+
+    QSet<int> rhs;
+    const int start = lhsSize - intersectSize;
+    for (int i = start; i < start + rhsSize; ++i)
+        rhs.insert(i);
+
+    QBENCHMARK {
+        lhs.intersect(rhs);
+    }
+
+    QVERIFY(lhs.size() == intersectSize);
+}
+
+struct ComplexType
+{
+    ComplexType(int a) : a(a) {}
+    int a;
+    int b;
+    int c;
+};
+
+inline uint qHash(const ComplexType &key, uint seed = 0)
+{
+    return uint(key.a) ^ seed;
+}
+
+inline bool operator==(const ComplexType &lhs, const ComplexType &rhs)
+{
+    return lhs.a == rhs.a;
+}
+
+void tst_QSet::intersect_complexType_data()
+{
+    intersect_int_data();
+}
+
+void tst_QSet::intersect_complexType()
+{
+    QFETCH(int, lhsSize);
+    QFETCH(int, rhsSize);
+    QFETCH(int, intersectSize);
+
+    QSet<ComplexType> lhs;
+    for (int i = 0; i < lhsSize; ++i)
+        lhs.insert(ComplexType(i));
+
+    QSet<ComplexType> rhs;
+    const int start = lhsSize - intersectSize;
+    for (int i = start; i < start + rhsSize; ++i)
+        rhs.insert(ComplexType(i));
+
+    QBENCHMARK {
+        lhs.intersect(rhs);
+    }
+}
+
+QTEST_MAIN(tst_QSet)
+
+#include "main.moc"
diff --git a/tests/benchmarks/corelib/tools/qset/qset.pro b/tests/benchmarks/corelib/tools/qset/qset.pro
new file mode 100644
index 0000000000..8fb8bcfa0b
--- /dev/null
+++ b/tests/benchmarks/corelib/tools/qset/qset.pro
@@ -0,0 +1,4 @@
+TARGET = tst_qset
+QT = core testlib
+SOURCES += main.cpp
+CONFIG += release