try {
bu01 = new BasicUnit( t01, null, c01 );
fail();
} catch( IllegalArgumentException iae ) {}
UnitOrigin uo = new BasicUnitOrigin();
bu01 = new BasicUnit( t01, s01, c01, uo );
assertEquals( uo, bu01.getOrigin() );
try {
bu01 = new BasicUnit( t01, s01, c01, null );