/** @throws Exception */
@Test
public void assign_s1() throws Exception
{
S1 v = new S1( 1, 2 ); check_s1( v, 1, 2 );
v.a = null; check_s1( v, null, 2 );
v.a = 3; check_s1( v, 3, 2 );
v.setA( null ); check_s1( v, null, 2 );
v.setA( 4 ); check_s1( v, 4, 2 );
v.b = null; check_s1( v, 4, null );
v.b = 5; check_s1( v, 4, 5 );
v.setB( null ); check_s1( v, 4, null );
v.setB( 6 ); check_s1( v, 4, 6 );
}