m1.addColumn(new TableColumn(1, 23));
m1.addColumn(new TableColumn(2, 34));
m1.addColumn(new TableColumn(3, 45));
m1.addColumn(new TableColumn(4, 56));
m1.moveColumn(1, 3);
TableColumn tc0 = m1.getColumn(0);
TableColumn tc1 = m1.getColumn(1);
TableColumn tc2 = m1.getColumn(2);
TableColumn tc3 = m1.getColumn(3);
harness.check(tc0.getWidth(), 23);