Long live Qt 4.5!

3 files changed, 1241 insertions, 0 deletions

diff --git a/tests/auto/qhash/.gitignore b/tests/auto/qhash/.gitignore
new file mode 100644
index 0000000..4c54a69
--- /dev/null
+++ b/tests/auto/qhash/.gitignore
@@ -0,0 +1 @@
+tst_qhash
diff --git a/tests/auto/qhash/qhash.pro b/tests/auto/qhash/qhash.pro
new file mode 100644
index 0000000..1c60fc2
--- /dev/null
+++ b/tests/auto/qhash/qhash.pro
@@ -0,0 +1,7 @@
+load(qttest_p4)
+SOURCES  += tst_qhash.cpp
+
+
+QT = core
+
+
diff --git a/tests/auto/qhash/tst_qhash.cpp b/tests/auto/qhash/tst_qhash.cpp
new file mode 100644
index 0000000..9343504
--- /dev/null
+++ b/tests/auto/qhash/tst_qhash.cpp
@@ -0,0 +1,1233 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtTest/QtTest>
+
+
+#if QT_VERSION >= 0x040000
+#include <qhash.h>
+#include <qmap.h>
+#endif
+
+
+
+//TESTED_CLASS=
+//TESTED_FILES=
+
+class tst_QHash : public QObject
+{
+    Q_OBJECT
+
+public:
+    tst_QHash();
+    virtual ~tst_QHash() {}
+
+private slots:
+    void insert1();
+    void erase();
+    void key();
+    
+    void count(); // copied from tst_QMap
+    void clear(); // copied from tst_QMap
+    void empty(); // copied from tst_QMap
+    void find(); // copied from tst_QMap
+    void constFind(); // copied from tst_QMap
+    void contains(); // copied from tst_QMap
+    void take(); // copied from tst_QMap
+    void operator_eq(); // copied from tst_QMap
+    void rehash_isnt_quadratic();
+    void dont_need_default_constructor();
+    void qhash();
+    void qmultihash_specific();
+
+    void compare();
+#if QT_VERSION > 0x040100
+    void compare2();
+#endif // QT_VERSION
+    void iterators(); // sligthly modified from tst_QMap
+    void keys_values_uniqueKeys(); // slightly modified from tst_QMap
+    void noNeedlessRehashes();
+};
+
+struct Foo {
+    static int count;
+    Foo():c(count) { ++count; }
+    Foo(const Foo& o):c(o.c) { ++count; }
+    ~Foo() { --count; }
+    int c;
+    int data[8];
+};
+
+tst_QHash::tst_QHash()
+{}
+
+int Foo::count = 0;
+
+//copied from tst_QMap.cpp
+class MyClass
+{
+public:
+    MyClass() { ++count;
+//     qDebug("creating MyClass count=%d", count);
+    }
+    MyClass( const QString& c) {
+	count++; str = c;
+// 	qDebug("creating MyClass '%s' count = %d", str.latin1(), count);
+    }
+    ~MyClass() {
+	count--;
+// 	qDebug("deleting MyClass '%s' count = %d", str.latin1(), count);
+    }
+    MyClass( const MyClass& c ) {
+	count++; str = c.str;
+// 	qDebug("creating MyClass '%s' count = %d", str.latin1(), count);
+    }
+    MyClass &operator =(const MyClass &o) {
+// 	qDebug("copying MyClass '%s'", o.str.latin1());
+	str = o.str; return *this;
+    }
+
+    QString str;
+    static int count;
+};
+
+int MyClass::count = 0;
+
+typedef QHash<QString, MyClass> MyMap;
+
+//void tst_QMap::count()
+void tst_QHash::count()
+{
+    {
+	MyMap map;
+	MyMap map2( map );
+	QCOMPARE( map.count(), 0 );
+	QCOMPARE( map2.count(), 0 );
+	QCOMPARE( MyClass::count, 0 );
+	// detach
+	map2["Hallo"] = MyClass( "Fritz" );
+	QCOMPARE( map.count(), 0 );
+        QCOMPARE( map2.count(), 1 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 1 );
+#endif
+    }
+    QCOMPARE( MyClass::count, 0 );
+
+    {
+	typedef QHash<QString, MyClass> Map;
+	Map map;
+	QCOMPARE( map.count(), 0);
+	map.insert( "Torben", MyClass("Weis") );
+	QCOMPARE( map.count(), 1 );
+	map.insert( "Claudia", MyClass("Sorg") );
+	QCOMPARE( map.count(), 2 );
+	map.insert( "Lars", MyClass("Linzbach") );
+	map.insert( "Matthias", MyClass("Ettrich") );
+	map.insert( "Sue", MyClass("Paludo") );
+	map.insert( "Eirik", MyClass("Eng") );
+	map.insert( "Haavard", MyClass("Nord") );
+	map.insert( "Arnt", MyClass("Gulbrandsen") );
+	map.insert( "Paul", MyClass("Tvete") );
+	QCOMPARE( map.count(), 9 );
+	map.insert( "Paul", MyClass("Tvete 1") );
+	map.insert( "Paul", MyClass("Tvete 2") );
+	map.insert( "Paul", MyClass("Tvete 3") );
+	map.insert( "Paul", MyClass("Tvete 4") );
+	map.insert( "Paul", MyClass("Tvete 5") );
+	map.insert( "Paul", MyClass("Tvete 6") );
+
+	QCOMPARE( map.count(), 9 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 9 );
+#endif
+
+	Map map2( map );
+	QVERIFY( map2.count() == 9 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 9 );
+#endif
+
+	map2.insert( "Kay", MyClass("Roemer") );
+	QVERIFY( map2.count() == 10 );
+	QVERIFY( map.count() == 9 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 19 );
+#endif
+
+	map2 = map;
+	QVERIFY( map.count() == 9 );
+	QVERIFY( map2.count() == 9 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 9 );
+#endif
+
+	map2.insert( "Kay", MyClass("Roemer") );
+	QVERIFY( map2.count() == 10 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 19 );
+#endif
+
+	map2.clear();
+	QVERIFY( map.count() == 9 );
+	QVERIFY( map2.count() == 0 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 9 );
+#endif
+
+	map2 = map;
+	QVERIFY( map.count() == 9 );
+	QVERIFY( map2.count() == 9 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 9 );
+#endif
+
+	map2.clear();
+	QVERIFY( map.count() == 9 );
+	QVERIFY( map2.count() == 0 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 9 );
+#endif
+
+	map.remove( "Lars" );
+	QVERIFY( map.count() == 8 );
+	QVERIFY( map2.count() == 0 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 8 );
+#endif
+
+	map.remove( "Mist" );
+	QVERIFY( map.count() == 8 );
+	QVERIFY( map2.count() == 0 );
+#ifndef Q_CC_SUN
+	QCOMPARE( MyClass::count, 8 );
+#endif
+    }
+    QVERIFY( MyClass::count == 0 );
+
+    {
+	typedef QHash<QString,MyClass> Map;
+	Map map;
+	map["Torben"] = MyClass("Weis");
+#ifndef Q_CC_SUN
+	QVERIFY( MyClass::count == 1 );
+#endif
+	QVERIFY( map.count() == 1 );
+
+	(void)map["Torben"].str;
+	(void)map["Lars"].str;
+#ifndef Q_CC_SUN
+	QVERIFY( MyClass::count == 2 );
+#endif
+	QVERIFY( map.count() == 2 );
+
+	const Map& cmap = map;
+	(void)cmap["Depp"].str;
+#ifndef Q_CC_SUN
+	QVERIFY( MyClass::count == 2 );
+#endif
+	QVERIFY( map.count() == 2 );
+	QVERIFY( cmap.count() == 2 );
+    }
+    QCOMPARE( MyClass::count, 0 );
+    {
+	for ( int i = 0; i < 100; ++i )
+	{
+	    QHash<int, MyClass> map;
+	    for (int j = 0; j < i; ++j)
+		map.insert(j, MyClass(QString::number(j)));
+	}
+	QCOMPARE( MyClass::count, 0 );
+    }
+    QCOMPARE( MyClass::count, 0 );
+}
+void tst_QHash::insert1()
+{
+    const char *hello = "hello";
+    const char *world = "world";
+    const char *allo = "allo";
+    const char *monde = "monde";
+
+    {
+        typedef QHash<QString, QString> Hash;
+        Hash hash;
+        QString key;
+        for (int i = 0; i < 10; ++i) {
+            key[0] = i + '0';
+            for (int j = 0; j < 10; ++j) {
+                key[1] = j + '0';
+                hash.insert(key, "V" + key);
+            }
+        }
+
+        for (int i = 0; i < 10; ++i) {
+            key[0] = i + '0';
+            for (int j = 0; j < 10; ++j) {
+                key[1] = j + '0';
+                hash.remove(key);
+            }
+        }
+    }
+
+    {
+        typedef QHash<int, const char *> Hash;
+        Hash hash;
+        hash.insert(1, hello);
+        hash.insert(2, world);
+
+        QVERIFY(hash.size() == 2);
+        QVERIFY(!hash.isEmpty());
+
+        {
+            Hash hash2 = hash;
+            hash2 = hash;
+            hash = hash2;
+            hash2 = hash2;
+            hash = hash;
+            hash2.clear();
+            hash2 = hash2;
+            QVERIFY(hash2.size() == 0);
+            QVERIFY(hash2.isEmpty());
+        }
+        QVERIFY(hash.size() == 2);
+
+        {
+            Hash hash2 = hash;
+            hash2[1] = allo;
+            hash2[2] = monde;
+
+            QVERIFY(hash2[1] == allo);
+            QVERIFY(hash2[2] == monde);
+            QVERIFY(hash[1] == hello);
+            QVERIFY(hash[2] == world);
+
+            hash2[1] = hash[1];
+            hash2[2] = hash[2];
+
+            QVERIFY(hash2[1] == hello);
+            QVERIFY(hash2[2] == world);
+
+            hash[1] = hash[1];
+	    QVERIFY(hash[1] == hello);
+	}
+	        {
+            Hash hash2 = hash;
+            hash2.detach();
+            hash2.remove(1);
+            QVERIFY(hash2.size() == 1);
+            hash2.remove(1);
+            QVERIFY(hash2.size() == 1);
+            hash2.remove(0);
+            QVERIFY(hash2.size() == 1);
+            hash2.remove(2);
+            QVERIFY(hash2.size() == 0);
+            QVERIFY(hash.size() == 2);
+        }
+
+        hash.detach();
+
+        {
+            Hash::iterator it1 = hash.find(1);
+            QVERIFY(it1 != hash.end());
+
+            Hash::iterator it2 = hash.find(0);
+            QVERIFY(it2 != hash.begin());
+            QVERIFY(it2 == hash.end());
+
+            *it1 = monde;
+            QVERIFY(*it1 == monde);
+            QVERIFY(hash[1] == monde);
+
+            *it1 = hello;
+            QVERIFY(*it1 == hello);
+            QVERIFY(hash[1] == hello);
+
+            hash[1] = monde;
+            QVERIFY(it1.key() == 1);
+            QVERIFY(it1.value() == monde);
+            QVERIFY(*it1 == monde);
+            QVERIFY(hash[1] == monde);
+
+            hash[1] = hello;
+            QVERIFY(*it1 == hello);
+            QVERIFY(hash[1] == hello);
+        }
+
+        {
+            const Hash hash2 = hash;
+
+            Hash::const_iterator it1 = hash2.find(1);
+            QVERIFY(it1 != hash2.end());
+            QVERIFY(it1.key() == 1);
+            QVERIFY(it1.value() == hello);
+            QVERIFY(*it1 == hello);
+
+            Hash::const_iterator it2 = hash2.find(2);
+            QVERIFY(it1 != it2);
+            QVERIFY(it1 != hash2.end());
+            QVERIFY(it2 != hash2.end());
+
+            int count = 0;
+            it1 = hash2.begin();
+            while (it1 != hash2.end()) {
+                count++;
+                ++it1;
+            }
+            QVERIFY(count == 2);
+
+            count = 0;
+            it1 = hash.begin();
+            while (it1 != hash.end()) {
+                count++;
+                ++it1;
+            }
+            QVERIFY(count == 2);
+        }
+
+        {
+            QVERIFY(hash.contains(1));
+            QVERIFY(hash.contains(2));
+            QVERIFY(!hash.contains(0));
+            QVERIFY(!hash.contains(3));
+        }
+
+        {
+            QVERIFY(hash.value(1) == hello);
+            QVERIFY(hash.value(2) == world);
+            QVERIFY(hash.value(3) == 0);
+            QVERIFY(hash.value(1, allo) == hello);
+            QVERIFY(hash.value(2, allo) == world);
+            QVERIFY(hash.value(3, allo) == allo);
+            QVERIFY(hash.value(0, monde) == monde);
+        }
+
+        {
+            QHash<int,Foo> hash;
+            for (int i = 0; i < 10; i++)
+                hash.insert(i, Foo());
+            QVERIFY(Foo::count == 10);
+            hash.remove(7);
+            QVERIFY(Foo::count == 9);
+
+        }
+        QVERIFY(Foo::count == 0);
+        {
+            QHash<int, int*> hash;
+            QVERIFY(((const QHash<int,int*>*) &hash)->operator[](7) == 0);
+        }
+    }
+}
+
+void tst_QHash::erase()
+{
+    QHash<int, int> h1;
+    h1.insert(1, 2);
+    h1.erase(h1.begin());
+    QVERIFY(h1.size() == 0);
+    QVERIFY(h1.begin() == h1.end());
+    h1.insert(3, 4);
+    QVERIFY(*h1.begin() == 4);
+    h1.insert(5, 6);
+    QVERIFY(h1.size() == 2);
+    QHash<int, int>::iterator it1 = h1.begin();
+    ++it1;
+    it1 = h1.erase(it1);
+    QVERIFY(it1 == h1.end());
+    h1.insert(7, 8);
+    h1.insert(9, 10);
+    it1 = h1.begin();
+    int n = 0;
+    while (it1 != h1.end()) {
+	it1 = h1.erase(it1);
+	++n;
+    }
+    QVERIFY(n == 3);
+    QHash<int, int> h2;
+    h2.insertMulti(20, 41);
+    h2.insertMulti(20, 42);
+    QVERIFY(h2.size() == 2);
+    it1 = h2.erase(h2.begin());
+    it1 = h2.erase(h2.begin());
+    QVERIFY(it1 == h2.end());
+}
+
+void tst_QHash::key()
+{
+    {
+        QString def("default value");
+
+        QHash<QString, int> hash1;
+        QCOMPARE(hash1.key(1), QString());
+        QCOMPARE(hash1.key(1, def), def);
+
+        hash1.insert("one", 1);
+        QCOMPARE(hash1.key(1), QString("one"));
+        QCOMPARE(hash1.key(1, def), QString("one"));
+        QCOMPARE(hash1.key(2), QString());
+        QCOMPARE(hash1.key(2, def), def);
+
+        hash1.insert("two", 2);
+        QCOMPARE(hash1.key(1), QString("one"));
+        QCOMPARE(hash1.key(1, def), QString("one"));
+        QCOMPARE(hash1.key(2), QString("two"));
+        QCOMPARE(hash1.key(2, def), QString("two"));
+        QCOMPARE(hash1.key(3), QString());
+        QCOMPARE(hash1.key(3, def), def);
+
+        hash1.insert("deux", 2);
+        QCOMPARE(hash1.key(1), QString("one"));
+        QCOMPARE(hash1.key(1, def), QString("one"));
+        QVERIFY(hash1.key(2) == "deux" || hash1.key(2) == "two");
+        QVERIFY(hash1.key(2, def) == "deux" || hash1.key(2, def) == "two");
+        QCOMPARE(hash1.key(3), QString());
+        QCOMPARE(hash1.key(3, def), def);
+    }
+
+    {
+        int def = 666;
+
+        QHash<int, QString> hash2;
+        QCOMPARE(hash2.key("one"), 0);
+        QCOMPARE(hash2.key("one", def), def);
+
+        hash2.insert(1, "one");
+        QCOMPARE(hash2.key("one"), 1);
+        QCOMPARE(hash2.key("one", def), 1);
+        QCOMPARE(hash2.key("two"), 0);
+        QCOMPARE(hash2.key("two", def), def);
+
+        hash2.insert(2, "two");
+        QCOMPARE(hash2.key("one"), 1);
+        QCOMPARE(hash2.key("one", def), 1);
+        QCOMPARE(hash2.key("two"), 2);
+        QCOMPARE(hash2.key("two", def), 2);
+        QCOMPARE(hash2.key("three"), 0);
+        QCOMPARE(hash2.key("three", def), def);
+
+        hash2.insert(3, "two");
+        QCOMPARE(hash2.key("one"), 1);
+        QCOMPARE(hash2.key("one", def), 1);
+        QCOMPARE(hash2.key("two"), 2);
+        QCOMPARE(hash2.key("two", def), 2);
+        QCOMPARE(hash2.key("three"), 0);
+        QCOMPARE(hash2.key("three", def), def);
+
+        hash2.insert(-1, "two");
+        QCOMPARE(hash2.key("two"), -1);
+        QCOMPARE(hash2.key("two", def), -1);
+
+        hash2.insert(0, "zero");
+        QCOMPARE(hash2.key("zero"), 0);
+        QCOMPARE(hash2.key("zero", def), 0);
+    }
+}
+
+// copied from tst_QMap
+void tst_QHash::clear()
+{
+    {
+	MyMap map;
+	map.clear();
+	QVERIFY( map.isEmpty() );
+	map.insert( "key", MyClass( "value" ) );
+	map.clear();
+	QVERIFY( map.isEmpty() );
+	map.insert( "key0", MyClass( "value0" ) );
+	map.insert( "key0", MyClass( "value1" ) );
+	map.insert( "key1", MyClass( "value2" ) );
+	map.clear();
+	QVERIFY( map.isEmpty() );
+    }
+    QCOMPARE( MyClass::count, int(0) );
+}
+//copied from tst_QMap
+void tst_QHash::empty()
+{
+    QHash<int, QString> map1;
+
+    QVERIFY(map1.isEmpty());
+
+    map1.insert(1, "one");
+    QVERIFY(!map1.isEmpty());
+
+    map1.clear();
+    QVERIFY(map1.isEmpty());
+
+}
+
+//copied from tst_QMap
+void tst_QHash::find()
+{
+    QHash<int, QString> map1;
+    QString testString="Teststring %0";
+    QString compareString;
+    int i,count=0;
+
+    //QVERIFY(map1.find(1) == map1.end());
+
+    map1.insert(1,"Mensch");
+    map1.insert(1,"Mayer");
+    map1.insert(2,"Hej");
+
+    QVERIFY(map1.find(1).value() == "Mayer");
+    QVERIFY(map1.find(2).value() == "Hej");
+
+    for(i = 3; i < 10; ++i) {
+        compareString = testString.arg(i);
+        map1.insertMulti(4, compareString);
+    }
+
+    QHash<int, QString>::const_iterator it=map1.find(4);
+
+    for(i = 9; i > 2 && it != map1.end() && it.key() == 4; --i) {
+        compareString = testString.arg(i);
+        QVERIFY(it.value() == compareString);
+        ++it;
+        ++count;
+    }
+    QCOMPARE(count, 7);
+}
+
+// copied from tst_QMap
+void tst_QHash::constFind()
+{
+    QHash<int, QString> map1;
+    QString testString="Teststring %0";
+    QString compareString;
+    int i,count=0;
+
+    QVERIFY(map1.constFind(1) == map1.constEnd());
+
+    map1.insert(1,"Mensch");
+    map1.insert(1,"Mayer");
+    map1.insert(2,"Hej");
+
+    QVERIFY(map1.constFind(1).value() == "Mayer");
+    QVERIFY(map1.constFind(2).value() == "Hej");
+
+    for(i = 3; i < 10; ++i) {
+        compareString = testString.arg(i);
+        map1.insertMulti(4, compareString);
+    }
+
+    QHash<int, QString>::const_iterator it=map1.constFind(4);
+
+    for(i = 9; i > 2 && it != map1.constEnd() && it.key() == 4; --i) {
+        compareString = testString.arg(i);
+        QVERIFY(it.value() == compareString);
+        ++it;
+        ++count;
+    }
+    QCOMPARE(count, 7);
+}
+
+// copied from tst_QMap
+void tst_QHash::contains()
+{
+    QHash<int, QString> map1;
+    int i;
+
+    map1.insert(1, "one");
+    QVERIFY(map1.contains(1));
+
+    for(i=2; i < 100; ++i)
+        map1.insert(i, "teststring");
+    for(i=99; i > 1; --i)
+        QVERIFY(map1.contains(i));
+
+    map1.remove(43);
+    QVERIFY(!map1.contains(43));
+}
+
+//copied from tst_QMap
+void tst_QHash::take()
+{
+    QHash<int, QString> map;
+
+    map.insert(2, "zwei");
+    map.insert(3, "drei");
+
+    QVERIFY(map.take(3) == "drei");
+    QVERIFY(!map.contains(3));
+}
+
+//copied from tst_QMap
+void tst_QHash::operator_eq()
+{
+    {
+        // compare for equality:
+        QHash<int, int> a;
+        QHash<int, int> b;
+
+        QVERIFY(a == b);
+        QVERIFY(!(a != b));
+        
+        a.insert(1,1);
+        b.insert(1,1);
+        QVERIFY(a == b);
+        QVERIFY(!(a != b));
+
+        a.insert(0,1);
+        b.insert(0,1);
+        QVERIFY(a == b);
+        QVERIFY(!(a != b));
+
+        // compare for inequality:
+        a.insert(42,0);
+        QVERIFY(a != b);
+        QVERIFY(!(a == b));
+
+        a.insert(65, -1);
+        QVERIFY(a != b);
+        QVERIFY(!(a == b));
+
+        b.insert(-1, -1);
+        QVERIFY(a != b);
+        QVERIFY(!(a == b));                
+    }
+
+    {
+        // a more complex map
+        QHash<QString, QString> a;
+        QHash<QString, QString> b;
+
+        QVERIFY(a == b);
+        QVERIFY(!(a != b));
+
+        a.insert("Hello", "World");
+        QVERIFY(a != b);
+        QVERIFY(!(a == b));
+
+        b.insert("Hello", "World");
+        QVERIFY(a == b);
+        QVERIFY(!(a != b));
+
+        a.insert("Goodbye", "cruel world");
+        QVERIFY(a != b);
+        QVERIFY(!(a == b));
+
+        b.insert("Goodbye", "cruel world");
+
+        // what happens if we insert nulls?
+        a.insert(QString(), QString());
+        QVERIFY(a != b);
+        QVERIFY(!(a == b));
+
+        // empty keys and null keys match:
+        b.insert(QString(""), QString());
+        QVERIFY(a == b);
+        QVERIFY(!(a != b));
+    }
+
+    {
+        // task 102658
+
+        QHash<QString, int> a;
+        QHash<QString, int> b;
+
+        a.insert("otto", 1);
+        b.insert("willy", 1);
+        QVERIFY(a != b);
+        QVERIFY(!(a == b));
+    }   
+}
+
+void tst_QHash::compare()
+{
+    QHash<int, QString> hash1,hash2;
+    QString testString = "Teststring %1";
+    int i;
+
+    for(i = 0; i < 1000; ++i)
+        hash1.insert(i,testString.arg(i));
+
+    for(--i; i >= 0; --i)
+        hash2.insert(i,testString.arg(i));
+
+    hash1.squeeze();
+    hash2.squeeze();
+
+    QVERIFY(hash1 == hash2);
+    QVERIFY(!(hash1 != hash2));
+
+    hash1.take(234);
+    hash2.take(234);
+    QVERIFY(hash1 == hash2);
+    QVERIFY(!(hash1 != hash2));
+
+    hash2.take(261);
+    QVERIFY(!(hash1 == hash2));
+    QVERIFY(hash1 != hash2);
+}
+
+#if QT_VERSION > 0x040100
+void tst_QHash::compare2()
+{
+    QHash<int, int> a;
+    QHash<int, int> b;
+
+    a.insertMulti(17, 1);
+    a.insertMulti(17 * 2, 1);
+    b.insertMulti(17 * 2, 1);
+    b.insertMulti(17, 1);
+    QVERIFY(a == b);
+    QVERIFY(b == a);
+
+    a.insertMulti(17, 2);
+    a.insertMulti(17 * 2, 3);
+    b.insertMulti(17 * 2, 3);
+    b.insertMulti(17, 2);
+    QVERIFY(a == b);
+    QVERIFY(b == a);
+
+    a.insertMulti(17, 4);
+    a.insertMulti(17 * 2, 5);
+    b.insertMulti(17 * 2, 4);
+    b.insertMulti(17, 5);
+    QVERIFY(!(a == b));
+    QVERIFY(!(b == a));
+
+    a.clear();
+    b.clear();
+    a.insertMulti(1, 1);
+    a.insertMulti(1, 2);
+    a.insertMulti(1, 3);
+    b.insertMulti(1, 1);
+    b.insertMulti(1, 2);
+    b.insertMulti(1, 3);
+    b.insertMulti(1, 4);
+    QVERIFY(!(a == b));
+    QVERIFY(!(b == a));
+}
+#endif // QT_VERSION
+
+//sligthly modified from tst_QMap
+void tst_QHash::iterators()
+{
+    QHash<int, QString> hash;
+    QMap<int, QString> testMap;
+    QString testString="Teststring %1";
+    QString testString1;
+    int i;
+
+    for(i = 1; i < 100; ++i)
+        hash.insert(i, testString.arg(i));
+
+    //to get some chaos in the hash
+    hash.squeeze();
+
+    //STL-Style iterators
+
+    QHash<int, QString>::iterator stlIt = hash.begin();
+    for(stlIt = hash.begin(), i = 1; stlIt != hash.end(), i < 100; ++stlIt, ++i) {
+            testMap.insert(i,stlIt.value());
+            //QVERIFY(stlIt.value() == hash.value(
+    }
+    stlIt = hash.begin();
+
+    QVERIFY(stlIt.value() == testMap.value(1));
+
+    stlIt+=5;
+    QVERIFY(stlIt.value() == testMap.value(6));
+
+    stlIt++;
+    QVERIFY(stlIt.value() == testMap.value(7));
+
+    stlIt-=3;
+    QVERIFY(stlIt.value() == testMap.value(4));
+
+    stlIt--;
+    QVERIFY(stlIt.value() == testMap.value(3));
+
+    testMap.clear();
+
+    //STL-Style const-iterators
+
+    QHash<int, QString>::const_iterator cstlIt = hash.constBegin();
+    for(cstlIt = hash.constBegin(), i = 1; cstlIt != hash.constEnd(), i < 100; ++cstlIt, ++i) {
+            testMap.insert(i,cstlIt.value());
+            //QVERIFY(stlIt.value() == hash.value(
+    }
+    cstlIt = hash.constBegin();
+
+    QVERIFY(cstlIt.value() == testMap.value(1));
+
+    cstlIt+=5;
+    QVERIFY(cstlIt.value() == testMap.value(6));
+
+    cstlIt++;
+    QVERIFY(cstlIt.value() == testMap.value(7));
+
+    cstlIt-=3;
+    QVERIFY(cstlIt.value() == testMap.value(4));
+
+    cstlIt--;
+    QVERIFY(cstlIt.value() == testMap.value(3));
+
+    testMap.clear();
+
+    //Java-Style iterators
+
+    QHashIterator<int, QString> javaIt(hash);
+
+    //walk through
+    i = 0;
+    while(javaIt.hasNext()) {
+        ++i;
+        javaIt.next();
+        testMap.insert(i,javaIt.value());
+    }
+    javaIt.toFront();
+    i = 0;
+    while(javaIt.hasNext()) {
+        ++i;
+        javaIt.next();
+        //qDebug(javaIt.value());
+        QVERIFY(javaIt.value() == testMap.value(i));
+    }
+
+    ++i;
+    while(javaIt.hasPrevious()) {
+        --i;
+        javaIt.previous();
+        QVERIFY(javaIt.value() == testMap.value(i));
+    }
+
+    /*
+        I've removed findNextKey() and findPreviousKey() from the API
+        for Qt 4.0 beta 1.
+    */
+
+#if 0
+    //findPreviousKey()  findNextKey()
+    for(i = 1; i < 100; ++i) {
+        if(javaIt.findNextKey(i))
+            QVERIFY(javaIt.value() == testString.arg(i));
+        else {
+            QVERIFY(!javaIt.hasNext());
+            QVERIFY(javaIt.findPreviousKey(i));
+            QVERIFY(javaIt.value() == testString.arg(i));
+        }
+
+        if(javaIt.findPreviousKey(i))
+            QVERIFY(javaIt.value() == testString.arg(i));
+        else {
+            QVERIFY(!javaIt.hasPrevious());
+            QVERIFY(javaIt.findNextKey(i));
+            QVERIFY(javaIt.value() == testString.arg(i));
+        }
+    }
+#endif
+
+    //peekNext()  peekPrevious()
+    javaIt.toFront();
+    javaIt.next();
+    while(javaIt.hasNext()) {
+        testString = javaIt.value();
+        testString1 = javaIt.peekNext().value();
+        javaIt.next();
+        //qDebug(testString + "  " + testString1 + "    " + javaIt.peekPrevious().value());
+        QVERIFY(javaIt.value() == testString1);
+        QCOMPARE(javaIt.peekPrevious().value(), testString1);
+    }
+    while(javaIt.hasPrevious()) {
+        testString = javaIt.value();
+        testString1 = javaIt.peekPrevious().value();
+        javaIt.previous();
+        QVERIFY(javaIt.value() == testString1);
+        //qDebug(testString + testString1 + javaIt.peekNext().value());
+        QCOMPARE(javaIt.peekNext().value(), testString1);
+    }
+}
+
+void tst_QHash::rehash_isnt_quadratic()
+{
+    // this test should be incredibly slow if rehash() is quadratic
+    for (int j = 0; j < 5; ++j) {
+        QHash<int, int> testHash;
+#if defined(Q_OS_WINCE)
+        for (int i = 0; i < 50000; ++i)
+#else
+        for (int i = 0; i < 500000; ++i)
+#endif
+            testHash.insertMulti(1, 1);
+    }
+}
+
+class Bar
+{
+public:
+#if QT_VERSION < 0x040100
+    Bar() : j(0) {}
+#endif
+    Bar(int i) : j(i) {}
+
+    int j;
+};
+
+void tst_QHash::dont_need_default_constructor()
+{
+    QHash<int, Bar> hash1;
+    for (int i = 0; i < 100; ++i) {
+        hash1.insert(i, Bar(2 * i));
+        QVERIFY(hash1.value(i, Bar(-1)).j == 2 * i);
+        QVERIFY(hash1.size() == i + 1);
+    }
+
+    QHash<QString, Bar> hash2;
+    for (int i = 0; i < 100; ++i) {
+        hash2.insert(QString::number(i), Bar(2 * i));
+        QVERIFY(hash2.value(QString::number(i), Bar(-1)).j == 2 * i);
+        QVERIFY(hash2.size() == i + 1);
+    }
+}
+
+void tst_QHash::qhash()
+{
+    {
+        QBitArray a1;
+        QBitArray a2;
+        QVERIFY(qHash(a1) == 0);
+
+        a1.resize(1);
+        a1.setBit(0, true);
+
+        a2.resize(1);
+        a2.setBit(0, false);
+
+        uint h1 = qHash(a1);
+        uint h2 = qHash(a2);
+
+        QVERIFY(h1 != h2);
+
+        a2.setBit(0, true);
+        QVERIFY(h1 == qHash(a2));
+
+        a1.fill(true, 8);
+        a1.resize(7);
+
+        h1 = qHash(a1);
+
+        a2.fill(true, 7);
+        h2 = qHash(a2);
+
+        QVERIFY(h1 == h2);
+
+        a2.setBit(0, false);
+        uint h3 = qHash(a2);
+        QVERIFY(h2 != h3);
+
+        a2.setBit(0, true);
+        QVERIFY(h2 == qHash(a2));
+
+        a2.setBit(6, false);
+        uint h4 = qHash(a2);
+        QVERIFY(h2 != h4);
+
+        a2.setBit(6, true);
+        QVERIFY(h2 == qHash(a2));
+
+        QVERIFY(h3 != h4);
+    }
+
+    {
+        QPair<int, int> p12(1, 2);
+        QPair<int, int> p21(2, 1);
+
+        QVERIFY(qHash(p12) == qHash(p12));
+        QVERIFY(qHash(p21) == qHash(p21));
+        QVERIFY(qHash(p12) != qHash(p21));
+
+        QPair<int, int> pA(0x12345678, 0x12345678);
+        QPair<int, int> pB(0x12345675, 0x12345675);
+
+        QVERIFY(qHash(pA) != qHash(pB));
+    }
+}
+
+void tst_QHash::qmultihash_specific()
+{
+    QMultiHash<int, int> hash1;
+    for (int i = 1; i <= 9; ++i) {
+        for (int j = 1; j <= i; ++j) {
+            int k = i * 10 + j;
+            QVERIFY(!hash1.contains(i, k));
+            hash1.insert(i, k);
+            QVERIFY(hash1.contains(i, k));
+        }
+    }
+
+    for (int i = 1; i <= 9; ++i) {
+        for (int j = 1; j <= i; ++j) {
+            int k = i * 10 + j;
+            QVERIFY(hash1.contains(i, k));
+        }
+    }
+
+    QVERIFY(hash1.contains(9, 99));
+    QCOMPARE(hash1.count(), 45);
+    hash1.remove(9, 99);
+    QVERIFY(!hash1.contains(9, 99));
+    QCOMPARE(hash1.count(), 44);
+
+    hash1.remove(9, 99);
+    QVERIFY(!hash1.contains(9, 99));
+    QCOMPARE(hash1.count(), 44);
+
+    hash1.remove(1, 99);
+    QCOMPARE(hash1.count(), 44);
+
+    hash1.insert(1, 99);
+    hash1.insert(1, 99);
+
+    QCOMPARE(hash1.count(), 46);
+    hash1.remove(1, 99);
+    QCOMPARE(hash1.count(), 44);
+    hash1.remove(1, 99);
+    QCOMPARE(hash1.count(), 44);
+
+    {
+    QMultiHash<int, int>::const_iterator i = hash1.constFind(1, 11);
+    QVERIFY(i.key() == 1);
+    QVERIFY(i.value() == 11);
+
+    i = hash1.constFind(2, 22);
+    QVERIFY(i.key() == 2);
+    QVERIFY(i.value() == 22);
+
+    i = hash1.constFind(9, 98);
+    QVERIFY(i.key() == 9);
+    QVERIFY(i.value() == 98);
+    }
+
+    {
+    const QMultiHash<int, int> hash2(hash1);
+    QMultiHash<int, int>::const_iterator i = hash2.find(1, 11);
+    QVERIFY(i.key() == 1);
+    QVERIFY(i.value() == 11);
+
+    i = hash2.find(2, 22);
+    QVERIFY(i.key() == 2);
+    QVERIFY(i.value() == 22);
+
+    i = hash2.find(9, 98);
+    QVERIFY(i.key() == 9);
+    QVERIFY(i.value() == 98);
+    }
+
+    {
+    QMultiHash<int, int>::iterator i = hash1.find(1, 11);
+    QVERIFY(i.key() == 1);
+    QVERIFY(i.value() == 11);
+
+    i = hash1.find(2, 22);
+    QVERIFY(i.key() == 2);
+    QVERIFY(i.value() == 22);
+
+    i = hash1.find(9, 98);
+    QVERIFY(i.key() == 9);
+    QVERIFY(i.value() == 98);
+    }
+}
+
+template <typename T>
+QList<T> sorted(const QList<T> &list)
+{
+    QList<T> res = list;
+    qSort(res);
+    return res;
+}
+
+void tst_QHash::keys_values_uniqueKeys()
+{
+    QHash<QString, int> hash;
+#if QT_VERSION >= 0x040200
+    QVERIFY(hash.uniqueKeys().isEmpty());
+#endif
+    QVERIFY(hash.keys().isEmpty());
+    QVERIFY(hash.values().isEmpty());
+
+    hash.insertMulti("alpha", 1);
+    QVERIFY(sorted(hash.keys()) == (QList<QString>() << "alpha"));
+#if QT_VERSION >= 0x040200
+    QVERIFY(hash.keys() == hash.uniqueKeys());
+#endif
+    QVERIFY(hash.values() == (QList<int>() << 1));
+
+    hash.insertMulti("beta", -2);
+    QVERIFY(sorted(hash.keys()) == (QList<QString>() << "alpha" << "beta"));
+#if QT_VERSION >= 0x040200
+    QVERIFY(hash.keys() == hash.uniqueKeys());
+#endif
+    QVERIFY(sorted(hash.values()) == sorted(QList<int>() << 1 << -2));
+
+    hash.insertMulti("alpha", 2);
+#if QT_VERSION >= 0x040200
+    QVERIFY(sorted(hash.uniqueKeys()) == (QList<QString>() << "alpha" << "beta"));
+#endif
+    QVERIFY(sorted(hash.keys()) == (QList<QString>() << "alpha" << "alpha" << "beta"));
+    QVERIFY(sorted(hash.values()) == sorted(QList<int>() << 2 << 1 << -2));
+
+    hash.insertMulti("beta", 4);
+#if QT_VERSION >= 0x040200
+    QVERIFY(sorted(hash.uniqueKeys()) == (QList<QString>() << "alpha" << "beta"));
+#endif
+    QVERIFY(sorted(hash.keys()) == (QList<QString>() << "alpha" << "alpha" << "beta" << "beta"));
+    QVERIFY(sorted(hash.values()) == sorted(QList<int>() << 2 << 1 << 4 << -2));
+}
+
+void tst_QHash::noNeedlessRehashes()
+{
+    QHash<int, int> hash;
+    for (int i = 0; i < 512; ++i) {
+        int j = (i * 345) % 512;
+        hash.insert(j, j);
+        int oldCapacity = hash.capacity();
+        hash[j] = j + 1;
+        QCOMPARE(oldCapacity, hash.capacity());
+        hash.insert(j, j + 1);
+        QCOMPARE(oldCapacity, hash.capacity());
+    }
+}
+
+QTEST_APPLESS_MAIN(tst_QHash)
+#include "tst_qhash.moc"