- (divisor * UnsignedInts.divide(dividend, divisor)
                      + UnsignedInts.remainder(dividend, divisor)))
          .isEqualTo(0);
    }
  }

  public void testParseInt() {
    for (long a : UNSIGNED_INTS) {
      assertThat(UnsignedInts.parseUnsignedInt(Long.toString(a))).isEqualTo((int) a);
    }
  }

  public void testParseIntFail() {
    assertThrows(