assertThat(BloomFilter.optimalNumOfHashFunctions(p)).isGreaterThan(0);
      }
    }
  }

  // https://github.com/google/guava/issues/1781
  public void testOptimalNumOfHashFunctionsRounding() {
    assertEquals(5, BloomFilter.optimalNumOfHashFunctions(0.03));
  }

  /** Tests that we always get a non-negative optimal size. */
  public void testOptimalSize() {