@Test(expectedExceptions=IllegalArgumentException.class)
public void shouldFailIfFieldNotSet() throws Exception {
AddSpacesAction action = new AddSpacesAction();
action.setLength(1);
action.execute(new Message());
}
@Test(expectedExceptions=IllegalArgumentException.class)
public void shouldFailIfLengthNotPositive() throws Exception {
AddSpacesAction action = new AddSpacesAction();