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    • test.ca.odell.glazedlists.calculation.SubtractionTest Maven / Gradle / Ivy

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    /* Glazed Lists                                                 (c) 2003-2007 */
/* http://publicobject.com/glazedlists/                      publicobject.com,*/
/*                                                     O'Dell Engineering Ltd.*/
package ca.odell.glazedlists.calculation;

import ca.odell.glazedlists.BasicEventList;
import ca.odell.glazedlists.EventList;
import junit.framework.TestCase;

public final class SubtractionTest extends TestCase {

    public void testSubtractionFloat() {
        final EventList aList = new BasicEventList();
        final EventList bList = new BasicEventList();
        
        final Calculation a = Calculations.count(aList);
        final Calculation b = Calculations.count(bList);
        final Calculation diff = Calculations.subtractFloats(a, b);

        assertEquals(new Float(0), diff.getValue());

        aList.add(null);
        assertEquals(new Float(1), diff.getValue());

        bList.add(null);
        assertEquals(new Float(0), diff.getValue());
    }

    public void testSubtractionDouble() {
        final EventList aList = new BasicEventList();
        final EventList bList = new BasicEventList();

        final Calculation a = Calculations.count(aList);
        final Calculation b = Calculations.count(bList);
        final Calculation diff = Calculations.subtractDoubles(a, b);

        assertEquals(new Double(0), diff.getValue());

        aList.add(null);
        assertEquals(new Double(1), diff.getValue());

        bList.add(null);
        assertEquals(new Double(0), diff.getValue());
    }

    public void testSubtractionInteger() {
        final EventList aList = new BasicEventList();
        final EventList bList = new BasicEventList();

        final Calculation a = Calculations.count(aList);
        final Calculation b = Calculations.count(bList);
        final Calculation diff = Calculations.subtractIntegers(a, b);

        assertEquals(new Integer(0), diff.getValue());

        aList.add(null);
        assertEquals(new Integer(1), diff.getValue());

        bList.add(null);
        assertEquals(new Integer(0), diff.getValue());
    }

    public void testSubtractionLong() {
        final EventList aList = new BasicEventList();
        final EventList bList = new BasicEventList();

        final Calculation a = Calculations.count(aList);
        final Calculation b = Calculations.count(bList);
        final Calculation diff = Calculations.subtractLongs(a, b);

        assertEquals(new Long(0), diff.getValue());

        aList.add(null);
        assertEquals(new Long(1), diff.getValue());

        bList.add(null);
        assertEquals(new Long(0), diff.getValue());
    }
}    
    
    
    

    




    
    
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