fn test_addition(): Unit with {Test} = {
    Test.assertEqual(4, 2 + 2)
    Test.assertEqual(0, 0 + 0)
    Test.assertEqual(100, 50 + 50)
}

fn test_subtraction(): Unit with {Test} = {
    Test.assertEqual(0, 2 - 2)
    Test.assertEqual(5, 10 - 5)
    Test.assertEqual(-5, 0 - 5)
}

fn test_multiplication(): Unit with {Test} = {
    Test.assertEqual(6, 2 * 3)
    Test.assertEqual(0, 0 * 100)
    Test.assertEqual(100, 10 * 10)
}

fn test_division(): Unit with {Test} = {
    Test.assertEqual(2, 6 / 3)
    Test.assertEqual(0, 0 / 5)
    Test.assertEqual(5, 25 / 5)
}

fn test_comparisons(): Unit with {Test} = {
    Test.assertTrue(5 > 3)
    Test.assertTrue(3 < 5)
    Test.assertTrue(5 >= 5)
    Test.assertTrue(5 <= 5)
    Test.assertFalse(3 > 5)
    Test.assertFalse(5 < 3)
}

fn test_equality(): Unit with {Test} = {
    Test.assertTrue(42 == 42)
    Test.assertFalse(42 == 43)
    Test.assertTrue(42 != 43)
    Test.assertFalse(42 != 42)
}

fn test_boolean_logic(): Unit with {Test} = {
    Test.assertTrue(true && true)
    Test.assertFalse(true && false)
    Test.assertTrue(true || false)
    Test.assertFalse(false || false)
    Test.assertTrue(!false)
    Test.assertFalse(!true)
}