Add Test for factory magic

tests/CMakeLists.txt

@@ -3,3 +3,4 @@ include(tomahawk_add_test.cmake)
 
 tomahawk_add_test(Result)
 tomahawk_add_test(Query)
+tomahawk_add_test(Database)

tests/TestDatabase.h

@@ -0,0 +1,62 @@
+/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
+ *
+ *   Copyright 2013, Dominik Schmidt <domme@tomahawk-player.org>
+ *
+ *   Tomahawk is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   Tomahawk is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Tomahawk. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TOMAHAWK_TESTDATABASE_H
+#define TOMAHAWK_TESTDATABASE_H
+
+#include <QtTest>
+
+#include "database/Database.h"
+#include "database/DatabaseCommand_LogPlayback.h"
+
+
+class TestDatabaseCommand : public DatabaseCommand
+{
+Q_OBJECT
+    virtual QString commandname() const { return "TestCommand"; }
+};
+
+class TestDatabase : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void testFactories()
+    {
+        Database* db = new Database("test");
+        DatabaseCommand* command = 0;
+
+        // can we check that his ASSERTs?, it's a build in type, one must not register it again
+        // db->registerCommand<DatabaseCommand_LogPlayback>();
+
+        // check that if we request a factory for LogPlayback it really creates a LogPlayback object
+        command = db->commandFactory<DatabaseCommand_LogPlayback>()->newInstance();
+        DatabaseCommand_LogPlayback* lpCmd =  qobject_cast< DatabaseCommand_LogPlayback* >( command );
+        QVERIFY( lpCmd );
+
+        // try to handle a third party database command
+        db->registerCommand<TestDatabaseCommand>();
+        command = db->commandFactory<TestDatabaseCommand>()->newInstance();
+        TestDatabaseCommand* tCmd = qobject_cast< TestDatabaseCommand* >( command );
+        QVERIFY( tCmd );
+
+        delete db;
+    }
+};
+
+#endif // TOMAHAWK_TESTDATABASE_H