API unit tests from Maemo API test team.

A large number of tweaks and changes to original tests, and refactor
a lot of the mock backends to reduce duplication.

Changed viewfinder test case to use mock service and provider so
that it matches the image capture test case.

Reviewed-by: Jonas Rabbe
(cherry picked from commit e40bef5508a4165cec4a46b97115aed461027fa5)

Also licence header fix:
(cherry picked from commit e9ee9e8c48b45b97d62ee4a82e400fa9d8ea8107)

Change-Id: Ic59891d75563bb2e008a336eea859e8c44d8d831
Reviewed-on: http://codereview.qt.nokia.com/2078
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>

tests/auto/qvideodevicecontrol/qvideodevicecontrol.pro

@@ -0,0 +1,5 @@
+load(qttest_p4)
+
+QT += multimediakit-private
+
+SOURCES += tst_qvideodevicecontrol.cpp

tests/auto/qvideodevicecontrol/tst_qvideodevicecontrol.cpp

@@ -0,0 +1,110 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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 1.1, 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//TESTED_COMPONENT=src/multimedia
+
+#include <QtTest/QtTest>
+#include "qvideodevicecontrol.h"
+class TestClass: public QVideoDeviceControl
+{
+    Q_OBJECT
+
+public:
+    TestClass(QObject *parent = 0 ):QVideoDeviceControl(parent)
+    {
+
+    }
+
+    ~TestClass(){}
+
+    virtual int deviceCount() const { return 0; }
+
+    QString deviceName(int index) const
+    {
+        QString str;
+        return str;
+    }
+
+    QString deviceDescription(int index) const
+    {
+        QString str;
+        return str;
+    }
+
+    QIcon deviceIcon(int index) const
+    {
+        QIcon icon;
+        return icon;
+    }
+
+    int defaultDevice() const { return 0; }
+    int selectedDevice() const { return 0; }
+
+ public Q_SLOTS:
+    void setSelectedDevice(int index)
+    {
+        emit devicesChanged();
+        emit selectedDeviceChanged(index);
+        emit selectedDeviceChanged("abc");
+    }
+};
+
+
+class tst_QVideoDeviceControl : public QObject
+{
+    Q_OBJECT
+public:
+    tst_QVideoDeviceControl(){}
+    ~tst_QVideoDeviceControl(){}
+
+private slots:
+    void testQVideoDeviceControl();
+};
+
+//MaemoAPI-1859:QVideoDeviceControl constructor
+void  tst_QVideoDeviceControl::testQVideoDeviceControl()
+{
+    TestClass *testClass = new TestClass(this);
+    QVERIFY(testClass != NULL);
+}
+
+QTEST_MAIN(tst_QVideoDeviceControl)
+#include "tst_qvideodevicecontrol.moc"