def testAdditionOnNumbers() {
  assertEquals(4, 2 + 2)
  assertEquals(6, 0 + 1 + 2 + 3)
}

def testSubtractionOnNumbers() {
  assertEquals(0, 2 - 2)
  assertEquals(-6, 0 - 1 - 2 - 3)
  assertEquals(110, 100 - (20 - 30))
}

def testMultiplicationOnNumbers() {
  assertEquals(4, 2 * 2)
  assertEquals(30, 5 * (-2 * -3))
}

def testDivisionOnNumbers() {
  assertEquals(3, 6 / 2)
  assertEquals(30, -900 / (60 / -2))
}

def testRemainder() {
  assertEquals(2, 10 % 4)
  assertEquals(5, 15 % (40 % 30))
}

def testAND() {
  assertEquals(0x04, 0x04 & 0x0F)
  assertEquals(0x00, 0x04 & 0x08)
  assertEquals(8, 12 & 9)
}

def testOR() {
  assertEquals(12, 4 | 8)
  assertEquals(0x0F, 3 | 12)
  assertEquals(0x0E, 10 | 4)
}