public void HashCodeTest()
{
Plaintext plain1 = new Plaintext("6x^40 + 5x^35 + 4x^30 + 3x^20 + 2x^10 + 5");
Plaintext plain2 = new Plaintext("1");
Plaintext plain3 = new Plaintext("0");
Plaintext plain4 = new Plaintext("6x^40 + 5x^35 + 4x^30 + 3x^20 + 2x^10 + 5");
Assert.AreNotEqual(plain1.GetHashCode(), plain2.GetHashCode());
Assert.AreNotEqual(plain1.GetHashCode(), plain3.GetHashCode());
Assert.AreNotEqual(plain2.GetHashCode(), plain3.GetHashCode());
Assert.AreNotEqual(plain2.GetHashCode(), plain4.GetHashCode());
Assert.AreNotEqual(plain3.GetHashCode(), plain4.GetHashCode());
Assert.AreEqual(plain1.GetHashCode(), plain4.GetHashCode());
}
