@Test
public void testFilterIncludedColumns() {

    Trigger trigger = new Trigger();
    trigger.setIncludedColumnNames("col1, col3, col5");
    Column[] param = buildColumnArray();
    Column[] expected = new Column[] { param[0], param[2], param[4] };
    assertArrayEquals("Included wrong set of columns", expected, 
            trigger.filterIncludedColumns(param));        
}