assertEquals(1, sub.size());
assertEquals(size - 1, sm.size());
assertEquals(size - 1, sm.inverseBidiMap().size());
assertEquals(false, sm.containsKey(firstEntry.getKey()));
assertEquals(false, sm.containsValue(firstEntry.getValue()));
assertEquals(false, sm.inverseBidiMap().containsKey(firstEntry.getValue()));
assertEquals(false, sm.inverseBidiMap().containsValue(firstEntry.getKey()));
assertEquals(false, sub.containsKey(firstEntry.getKey()));
assertEquals(false, sub.containsValue(firstEntry.getValue()));
assertEquals(false, set.contains(firstEntry));