/*

 * JBoss, Home of Professional Open Source

 * Copyright 2011, Red Hat, Inc. and individual contributors

 * by the @authors tag. See the copyright.txt in the distribution for a

 * full listing of individual contributors.

 *

 * This is free software; you can redistribute it and/or modify it

 * under the terms of the GNU Lesser General Public License as

 * published by the Free Software Foundation; either version 2.1 of

 * the License, or (at your option) any later version.

 *

 * This software 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this software; if not, write to the Free

 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA

 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.

 */



package org.mobicents.protocols.smpp.util;



import static org.testng.Assert.assertEquals;

import static org.testng.Assert.assertTrue;



import org.mobicents.protocols.smpp.util.DefaultSequenceScheme;

import org.testng.annotations.Test;



@Test

public class DefaultSequenceSchemeTest {



    public void testNextNumber() {

        DefaultSequenceScheme seq = new DefaultSequenceScheme();

        assertEquals(seq.nextNumber(), 1L);

        assertEquals(seq.nextNumber(), 2L);

        assertEquals(seq.nextNumber(), 3L);

        assertEquals(seq.nextNumber(), 4L);

        assertEquals(seq.nextNumber(), 5L);

        assertEquals(seq.nextNumber(), 6L);

    }

    public void testPeek() {

        DefaultSequenceScheme seq = new DefaultSequenceScheme();

        assertEquals(seq.peek(), 1L);

        assertEquals(seq.nextNumber(), 1L);

        assertEquals(seq.peek(), 2L);

        assertEquals(seq.peek(), 2L);

        assertEquals(seq.peek(), 2L);

        assertEquals(seq.peek(), 2L);

        assertEquals(seq.nextNumber(), 2L);

        assertEquals(seq.peek(), 3L);

        assertEquals(seq.peek(10L), 13L);

    }

    public void testReset() {

        DefaultSequenceScheme seq = new DefaultSequenceScheme();

        while (seq.nextNumber() < 1450L);

        assertEquals(seq.peek(), 1451);

        seq.reset();

        assertEquals(seq.nextNumber(), 1);

    }



    public void testWrap() {

        DefaultSequenceScheme dss = new DefaultSequenceScheme(

                DefaultSequenceScheme.MAX_VALUE - 1);

        assertTrue(dss.nextNumber() == DefaultSequenceScheme.MAX_VALUE - 1L);

        assertTrue(dss.nextNumber() == DefaultSequenceScheme.MAX_VALUE);

        //Resets back to start

        assertTrue(dss.nextNumber() == DefaultSequenceScheme.MAX_VALUE - 1);

    }

}