Object o = new Object();
      bf.put(o);
      assertTrue(bf.mightContain(o));
      assertTrue(bf.apply(o));
      assertTrue(bf.test(o));
    }
  }

  public void testCopy() {
    BloomFilter<String> original = BloomFilter.create(unencodedCharsFunnel(), 100);
    BloomFilter<String> copy = original.copy();
    assertThat(copy).isNotSameInstanceAs(original);
    assertEquals(original, copy);