public void ArrayConstructorTest()
{
ArithmeticArray a = new ArithmeticArray(55555);
ArithmeticArray b = new ArithmeticArray(66666);
Assert.AreEqual(a.ToString(), "55555");
Assert.AreEqual(b.ToString(), "66666");
Assert.AreEqual(a.CompareTo(b), -1);
Assert.AreEqual(b.CompareTo(a), 1);
Assert.AreEqual(b.CompareTo(99999), -1);
Assert.AreEqual(a.CompareTo(0), 1);
ArithmeticArray d = a - b;
Assert.AreEqual(d.ToString(), "-11111");
ArithmeticArray s = a + b;
Assert.AreEqual(s.ToString(), "122221");
Assert.AreEqual(s.CompareTo(0), 1);
ArithmeticArray e = new ArithmeticArray("-7777777");
s = a + e;
Assert.AreEqual(s.ToString(), "-7722222");
Assert.AreEqual(s.CompareTo(-7777777), 1);
Assert.AreEqual(s.CompareTo(0), -1);
bool sign;
int[] array = s.ToArray(out sign);
ArithmeticArray t = new ArithmeticArray(sign, array);
Assert.IsTrue(s.CompareTo(t) == 0);
Assert.IsTrue(s.Equals(t));
}
public void ArrayOperatorTest()
{
ArithmeticArray a = new ArithmeticArray(0);
Assert.AreEqual(a.ToString(), "0"); // a == 0
a++;
Assert.AreEqual(a.ToString(), "1"); // a == 1
Assert.AreNotEqual(a.Size, 0);
--a;
Assert.AreEqual(a.ToString(), "0"); // a == 0
Assert.AreNotEqual(a.Size, 0);
--a;
Assert.AreEqual(a.ToString(), "-1"); // a == -1
Assert.AreNotEqual(a.Size, 0);
--a;
Assert.AreEqual(a.ToString(), "-2"); // a == -2
Assert.AreNotEqual(a.Size, 0);
a++;
a++;
Assert.AreEqual(a.ToString(), "0"); // a == 0
Assert.AreNotEqual(a.Size, 0);
int times = 10;
for (int n = 0; n < times; n++)
{
--a;
}
Assert.AreEqual(a.ToString(), "-" + times.ToString()); // a == -10
Assert.AreNotEqual(a.Size, 0);
ArithmeticArray b = new ArithmeticArray(100000);
Assert.AreEqual(b.ToString(), "100000");
Assert.AreEqual(a.CompareTo(null), 1); // a > null
Assert.AreEqual(a.CompareTo(-10), 0); // a == -10
Assert.AreEqual(a.CompareTo(10), -1); // a < 10
Assert.AreEqual(a.CompareTo(0), -1); // a < 0
Assert.AreEqual(a.CompareTo(b), -1); // a < b
Assert.AreEqual(b.CompareTo(-100000), 1); // b > -100000
Assert.AreEqual(b.CompareTo(100001), -1); // b < 100001
Assert.AreEqual(b.CompareTo(100000), 0); // b == 100000
Assert.AreEqual(b.CompareTo(b), 0); // b == b
Assert.AreEqual(b.CompareTo(a), 1); // b > a
Assert.IsFalse(b <= a);
Assert.IsFalse(b < a);
Assert.IsTrue(b >= a);
Assert.IsTrue(b > a);
Assert.IsTrue(b <= 100000);
Assert.IsTrue(b < 100001);
Assert.IsTrue(b > 99999);
Assert.IsTrue(b > -100000);
Assert.IsTrue(b > 0);
ArithmeticArray s = b * a;
Assert.AreEqual(s.ToString(), "-1000000");
s = b / a;
Assert.AreEqual(s.ToString(), "-10000");
s = b / -10;
Assert.AreEqual(s.ToString(), "-10000");
s = b / -999;
Assert.AreEqual(s.ToString(), "-100");
s = b / -9999;
Assert.AreEqual(s.ToString(), "-10");
s = b / 99999;
Assert.AreEqual(s.ToString(), "1");
s = b / 999999;
Assert.AreEqual(s.ToString(), "0");
a = new ArithmeticArray("32549853167");
b = new ArithmeticArray("-97682");
s = a / b;
Assert.AreEqual(s.ToString(), "-333222");
s = b / a;
Assert.AreEqual(s.ToString(), "0");
a = new ArithmeticArray("592347883169");
b = new ArithmeticArray("-537682");
s = a / b;
Assert.AreEqual(s.ToString(), "-1101669");
bool sign;
int[] array = s.ToArray(out sign);
array.IncreaseBy(10);
ArithmeticArray t = new ArithmeticArray(sign, array);
Assert.IsTrue(s.CompareTo(t) > 0);
//Using BigInteger to verify
string bigInteger = Generic.PiString.Replace(".", "");
ArithmeticArray x = new ArithmeticArray(bigInteger);
BigInteger bigInt = BigInteger.Parse(bigInteger);
Assert.AreEqual(bigInt.ToString(), x.ToString());
BigInteger oprand = BigInteger.Parse(s.ToString());
BigInteger result = BigInteger.Multiply(bigInt, oprand);
ArithmeticArray r = x * s;
Assert.AreEqual(r.ToString(), result.ToString());
result = BigInteger.Divide(bigInt, oprand);
r = x / s;
Assert.AreEqual(r.ToString(), result.ToString());
int ai = 4832954;
oprand = new BigInteger(ai);
result = BigInteger.Add(bigInt, oprand);
r = x + ai;
Assert.AreEqual(r.ToString(), result.ToString());
result = BigInteger.Subtract(bigInt, oprand);
r = x - ai;
Assert.AreEqual(r.ToString(), result.ToString());
result = BigInteger.Multiply(bigInt, oprand);
r = x * ai;
Assert.AreEqual(r.ToString(), result.ToString());
result = BigInteger.Divide(bigInt, oprand);
r = x / ai;
Assert.AreEqual(r.ToString(), result.ToString());
}