public void MakeSaltedHash_EmptySource_HashLength()
{
// Arrange
IHasher hasher = new Sha256Hasher();
string source = "";
int expectedHashLength = 88;
// Act
int actualHashLength = hasher.MakeSaltedHash(source).Length;
// Assert
Assert.AreEqual(expectedHashLength, actualHashLength);
}
public void VerifySaltedHash_ComputedMatching_Verified()
{
// Arrange
IHasher hasher = new Sha256Hasher();
string source = "s3cr37p455w0rd!7ru57n01";
string hash = hasher.MakeSaltedHash(source);
// Act
bool isVerified = hasher.VerifySaltedHash(source, hash);
// Assert
Assert.IsTrue(isVerified);
}
public void MakeSaltedHash_LongSource_HashLength()
{
// Arrange
IHasher hasher = new Sha256Hasher();
string source = "I can write anything I want here and the test will pass because all SHA256 hashes have the same length";
int expectedHashLength = 88;
// Act
int actualHashLength = hasher.MakeSaltedHash(source).Length;
// Assert
Assert.AreEqual(expectedHashLength, actualHashLength);
}
public void VerifySaltedHash_ComputedMismatching_NotVerified()
{
// Arrange
IHasher hasher = new Sha256Hasher();
string source = "s3cr37p455w0rd!7ru57n01";
string hash = hasher.MakeSaltedHash(source);
hash = (hash[1] == 'A' ? 'B' : 'A') + hash.Substring(1, hash.Length - 1); // Corrupt the hash
// Act
bool isVerified = hasher.VerifySaltedHash(source, hash);
// Assert
Assert.IsFalse(isVerified);
}
