public void Decrypting_data_that_could_not_possibly_be_encrypted_should_return_null()
{
/* Arrange */
byte[] sourceTooSmall = new byte[4];
var crypto = new AesCryptoProvider();
/* Act */
bool isEncrypted = crypto.IsEncrypted(sourceTooSmall);
var decryptedVale = crypto.Decrypt(sourceTooSmall);
/* Assert */
decryptedVale.Should().BeNull();
isEncrypted.Should().BeFalse();
}
public void Encrypting_and_decrypting_a_string_with_aes_should_work()
{
/* Arrange */
string source = "SomeValue";
var crypto = new AesCryptoProvider();
/* Act */
string encryptedValue = crypto.Encrypt(source);
bool isEncrypted = crypto.IsEncrypted(encryptedValue);
string decryptedVale = crypto.Decrypt(encryptedValue);
/* Assert */
encryptedValue.Should().NotBe(source);
decryptedVale.Should().Be(source);
isEncrypted.Should().BeTrue();
}
public void Encrypting_and_decrypting_null_or_empty_string_should_work()
{
/* Arrange */
var crypto = new AesCryptoProvider();
/* Act */
string nullStringEncrypt = crypto.Encrypt((string)null);
string emptyStringEncrypt = crypto.Encrypt(string.Empty);
byte[] nullByteEncrypt = crypto.Encrypt((byte[])null);
bool isEncryptedNullString = crypto.IsEncrypted((string)null);
bool isEncryptedEmptyString = crypto.IsEncrypted(string.Empty);
bool isEncryptedNullByte = crypto.IsEncrypted((byte[])null);
string nullStringDecrypt = crypto.Decrypt((string)null);
string emptyStringDecrypt = crypto.Decrypt(string.Empty);
byte[] nullByteDecrypt = crypto.Decrypt((byte[])null);
/* Assert */
nullStringEncrypt.Should().BeNull();
emptyStringEncrypt.Should().BeEmpty();
nullByteEncrypt.Should().BeNull();
isEncryptedNullString.Should().BeFalse();
isEncryptedEmptyString.Should().BeFalse();
isEncryptedNullByte.Should().BeFalse();
nullStringDecrypt.Should().BeNull();
emptyStringDecrypt.Should().BeEmpty();
nullByteDecrypt.Should().BeNull();
}