// the alloc of b2 failed, but n2 should be registered to be notified
// when a block is freed. release of b1 should notify n2 of availability
p.release( b1 );
b1 = null;
assertEquals( 0, p.used() );
Thread.sleep( 15 );
assertFalse( n1.available );
assertTrue( n2.available );
n2.available = false;