assertEquals(false, sm.inverseBidiMap().containsKey(firstValue));
assertEquals(false, sm.inverseBidiMap().containsValue(first));
assertEquals(false, sub.containsKey(first));
assertEquals(false, sub.containsValue(firstValue));
assertEquals(false, sm.containsKey(second));
assertEquals(false, sm.containsValue(secondValue));
assertEquals(false, sm.inverseBidiMap().containsKey(secondValue));
assertEquals(false, sm.inverseBidiMap().containsValue(second));
assertEquals(false, sub.containsKey(second));
assertEquals(false, sub.containsValue(secondValue));