public void DecryptTest_EmptyKey()
{
byte[] key = new byte[0];
XCrypt crypt = new XCrypt(key);
byte[] cipherText = Encoding.UTF8.GetBytes("BS^DYT");
Assert.Throws <InvalidOperationException>(() => crypt.Decrypt(cipherText));
}
public void DecryptTest()
{
byte[] key = Encoding.UTF8.GetBytes("12345");
XCrypt crypt = new XCrypt(key);
byte[] cipherText = Encoding.UTF8.GetBytes("BS^DYT");
byte[] expected = Encoding.UTF8.GetBytes("sample");
byte[] actual = crypt.Decrypt(cipherText);
CollectionAssert.AreEqual(expected, actual);
}