UnsignedLong unsignedRem = aUnsigned.mod(bUnsigned);
          assertThat(unsignedRem.longValue()).isEqualTo(expected);
        }
      }
    }
  }

  public void testModByZero() {
    for (long a : TEST_LONGS) {
      assertThrows(
          ArithmeticException.class, () -> UnsignedLong.fromLongBits(a).mod(UnsignedLong.ZERO));
    }
  }

  public void testCompare() {