public void EncryptDecryptTest()
{
// Arrange.
var originalData = new byte[200];
var originalEmpty = new byte[0];
var rand = new Random();
rand.NextBytes(originalData);
var es = new EncryptionService();
// Act.
var encryptedData = es.Encrypt(originalData);
var encryptedEmpty = es.Encrypt(originalEmpty);
var decryptedData = es.Decrypt(encryptedData);
var decryptedEmpty = es.Decrypt(encryptedEmpty);
// Assert.
Assert.IsTrue(originalData.SequenceEqual(decryptedData));
Assert.IsTrue(originalEmpty.SequenceEqual(decryptedEmpty));
// Invalid arguments.
TestsHelper.VerifyThrow<ArgumentNullException>(() => es.Encrypt(null));
TestsHelper.VerifyThrow<ArgumentNullException>(() => es.Decrypt(null));
}
public void WhenDataIsCorruptedDecryptThrowsError()
{
// Arrange.
var originalData = new byte[200];
var rand = new Random();
rand.NextBytes(originalData);
var es = new EncryptionService();
var encryptedData = es.Encrypt(originalData);
// Act / Assert.
encryptedData[100] = (byte)~encryptedData[100];
TestsHelper.VerifyThrow<CryptographicException>(() => es.Decrypt(encryptedData));
}
public void EncryptDecryptString()
{
// Arrange.
const string OriginalString = "Test String";
var emptyString = string.Empty;
var es = new EncryptionService();
// Act.
var encryptedString = es.EncryptString(OriginalString);
var encryptedEmpty = es.EncryptString(emptyString);
var decryptedString = es.DecryptString(encryptedString);
var decryptedEmpty = es.DecryptString(encryptedEmpty);
// Assert.
Assert.AreEqual(OriginalString, decryptedString);
Assert.AreEqual(emptyString, decryptedEmpty);
// Invalid arguments.
TestsHelper.VerifyThrow<ArgumentNullException>(() => es.EncryptString(null));
TestsHelper.VerifyThrow<ArgumentNullException>(() => es.DecryptString(null));
}