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Weitere UnitTests

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This commit is contained in:
Andreas Müller
2021-11-19 23:10:35 +01:00
parent 0c3825587f
commit 0736d54c87
7 changed files with 691 additions and 51 deletions
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598
AMWD.Common.Tests/Utilities/CryptographyHelperTests.cs Normal file
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using System;
using System.Diagnostics;
using System.IO;
using System.Security.Cryptography;
using System.Text.RegularExpressions;
using AMWD.Common.Tests.Utils;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace AMWD.Common.Tests.Utilities
{
[TestClass]
public class CryptographyHelperTests
{
private string keyFile;
private CryptographyHelper cryptoHelper;
[TestInitialize]
public void Initialize()
{
keyFile = Path.GetTempFileName();
cryptoHelper = new CryptographyHelper(keyFile);
}
[TestCleanup]
public void Cleanup()
{
File.Delete(keyFile);
}
#region Static
#region Encryption
#region AES
[TestMethod]
public void ShouldEncryptAesWithoutSalt() // required to test the encryption itself
{
// arrange
using var disposable = CryptographyHelperSaltMock.Create(0);
byte[] bytes = new byte[] { 0xaf, 0xfe };
string str = "ABC";
string password1 = "P@ssw0rd!";
string password2 = "P@ssw0rd";
byte[] expectedBytes = new byte[] { 0x7c, 0x7b, 0x77, 0x56, 0x91, 0x1a, 0xd9, 0xc0, 0x72, 0x70, 0x36, 0x88, 0x9f, 0xb4, 0xb5, 0xbc };
// act
byte[] cipherBytes1 = CryptographyHelper.AesEncrypt(bytes, password1);
string cipherStr1 = CryptographyHelper.AesEncrypt(str, password1);
byte[] cipherBytes2 = CryptographyHelper.AesEncrypt(bytes, password2);
string cipherStr2 = CryptographyHelper.AesEncrypt(str, password2);
// assert
CollectionAssert.AreEqual(expectedBytes, cipherBytes1);
Assert.AreEqual("ueLuhFNpCuYmx8v3hczHtg==", cipherStr1);
CollectionAssert.AreNotEqual(expectedBytes, cipherBytes2);
Assert.AreNotEqual("ueLuhFNpCuYmx8v3hczHtg==", cipherStr2);
}
[TestMethod]
public void ShouldDecryptAesWithoutSalt() // required to test the decryption itself
{
// arrange
using var disposable = CryptographyHelperSaltMock.Create(0);
string cipherStr = "ueLuhFNpCuYmx8v3hczHtg==";
byte[] cipherBytes = new byte[] { 0x7c, 0x7b, 0x77, 0x56, 0x91, 0x1a, 0xd9, 0xc0, 0x72, 0x70, 0x36, 0x88, 0x9f, 0xb4, 0xb5, 0xbc };
string password1 = "P@ssw0rd!";
string password2 = "P@ssw0rd";
byte[] expectedBytes = new byte[] { 0xaf, 0xfe };
// act
byte[] plainBytes1 = CryptographyHelper.AesDecrypt(cipherBytes, password1);
string plainStr1 = CryptographyHelper.AesDecrypt(cipherStr, password1);
try
{
CryptographyHelper.AesDecrypt(cipherBytes, password2);
Assert.Fail();
}
catch (CryptographicException)
{ }
try
{
CryptographyHelper.AesDecrypt(cipherStr, password2);
Assert.Fail();
}
catch (CryptographicException)
{ }
// assert
CollectionAssert.AreEqual(expectedBytes, plainBytes1);
Assert.AreEqual("ABC", plainStr1);
}
[TestMethod]
public void ShouldEncryptDecryptAesBytes()
{
// arrange
byte[] plain = new byte[] { 0xaf, 0xfe };
string password = "P@ssw0rd!";
// act
byte[] cipher1 = CryptographyHelper.AesEncrypt(plain, password);
byte[] cipher2 = CryptographyHelper.AesEncrypt(plain, password);
byte[] plain1 = CryptographyHelper.AesDecrypt(cipher1, password);
byte[] plain2 = CryptographyHelper.AesDecrypt(cipher2, password);
// assert
CollectionAssert.AreNotEqual(cipher1, cipher2);
Assert.AreEqual(24, cipher1.Length);
Assert.AreEqual(24, cipher2.Length);
CollectionAssert.AreEqual(plain, plain1);
CollectionAssert.AreEqual(plain, plain2);
}
[TestMethod]
public void ShouldEncryptDecryptAesString()
{
// arrange
string plain = "ABC";
string password = "P@ssw0rd!";
// act
string cipher1 = CryptographyHelper.AesEncrypt(plain, password);
string cipher2 = CryptographyHelper.AesEncrypt(plain, password);
string plain1 = CryptographyHelper.AesDecrypt(cipher1, password);
string plain2 = CryptographyHelper.AesDecrypt(cipher2, password);
// assert
Assert.AreNotEqual(cipher1, cipher2);
Assert.AreEqual(32, cipher1.Length);
Assert.AreEqual(32, cipher2.Length);
Assert.AreEqual(plain, plain1);
Assert.AreEqual(plain, plain2);
}
#endregion AES
#region TripleDES
[TestMethod]
public void ShouldEncryptTdesWithoutSalt() // required to test the encryption itself
{
// arrange
using var disposable = CryptographyHelperSaltMock.Create(0);
byte[] bytes = new byte[] { 0xaf, 0xfe };
string str = "ABC";
string password1 = "P@ssw0rd!";
string password2 = "P@ssw0rd";
byte[] expectedBytes = new byte[] { 0xbf, 0x59, 0x1f, 0x48, 0x69, 0xab, 0x18, 0xc7 };
// act
byte[] cipherBytes1 = CryptographyHelper.TripleDesEncrypt(bytes, password1);
string cipherStr1 = CryptographyHelper.TripleDesEncrypt(str, password1);
byte[] cipherBytes2 = CryptographyHelper.TripleDesEncrypt(bytes, password2);
string cipherStr2 = CryptographyHelper.TripleDesEncrypt(str, password2);
// assert
CollectionAssert.AreEqual(expectedBytes, cipherBytes1);
Assert.AreEqual("1l74soBuuEI=", cipherStr1);
CollectionAssert.AreNotEqual(expectedBytes, cipherBytes2);
Assert.AreNotEqual("1l74soBuuEI=", cipherStr2);
}
[TestMethod]
public void ShouldDecryptTdesWithoutSalt() // required to test the decryption itself
{
// arrange
using var disposable = CryptographyHelperSaltMock.Create(0);
string cipherStr = "1l74soBuuEI=";
byte[] cipherBytes = new byte[] { 0xbf, 0x59, 0x1f, 0x48, 0x69, 0xab, 0x18, 0xc7 };
string password1 = "P@ssw0rd!";
string password2 = "P@ssw0rd";
byte[] expectedBytes = new byte[] { 0xaf, 0xfe };
// act
byte[] plainBytes1 = CryptographyHelper.TripleDesDecrypt(cipherBytes, password1);
string plainStr1 = CryptographyHelper.TripleDesDecrypt(cipherStr, password1);
try
{
CryptographyHelper.TripleDesDecrypt(cipherBytes, password2);
Assert.Fail();
}
catch (CryptographicException)
{ }
try
{
CryptographyHelper.TripleDesDecrypt(cipherStr, password2);
Assert.Fail();
}
catch (CryptographicException)
{ }
// assert
CollectionAssert.AreEqual(expectedBytes, plainBytes1);
Assert.AreEqual("ABC", plainStr1);
}
[TestMethod]
public void ShouldEncryptDecryptTdesBytes()
{
// arrange
byte[] plain = new byte[] { 0xaf, 0xfe };
string password = "P@ssw0rd!";
// act
byte[] cipher1 = CryptographyHelper.TripleDesEncrypt(plain, password);
byte[] cipher2 = CryptographyHelper.TripleDesEncrypt(plain, password);
byte[] plain1 = CryptographyHelper.TripleDesDecrypt(cipher1, password);
byte[] plain2 = CryptographyHelper.TripleDesDecrypt(cipher2, password);
// assert
CollectionAssert.AreNotEqual(cipher1, cipher2);
Assert.AreEqual(16, cipher1.Length);
Assert.AreEqual(16, cipher2.Length);
CollectionAssert.AreEqual(plain, plain1);
CollectionAssert.AreEqual(plain, plain2);
}
[TestMethod]
public void ShouldEncryptDecryptTdesString()
{
// arrange
string plain = "ABC";
string password = "P@ssw0rd!";
// act
string cipher1 = CryptographyHelper.TripleDesEncrypt(plain, password);
string cipher2 = CryptographyHelper.TripleDesEncrypt(plain, password);
string plain1 = CryptographyHelper.TripleDesDecrypt(cipher1, password);
string plain2 = CryptographyHelper.TripleDesDecrypt(cipher2, password);
// assert
Assert.AreNotEqual(cipher1, cipher2);
Assert.AreEqual(24, cipher1.Length);
Assert.AreEqual(24, cipher2.Length);
Assert.AreEqual(plain, plain1);
Assert.AreEqual(plain, plain2);
}
#endregion TripleDES
#endregion Encryption
#region Hash
[TestMethod]
public void ShouldReturnMd5Hash()
{
// arrange
string text = "Hello World!";
byte[] bytes = new byte[] { 0xde, 0xad, 0xbe, 0xef };
string fileName = Path.GetTempFileName();
// act
string textHash = CryptographyHelper.Md5(text);
string bytesHash = CryptographyHelper.Md5(bytes);
File.WriteAllText(fileName, text);
string fileHash = CryptographyHelper.Md5File(fileName);
File.Delete(fileName);
// assert
Assert.AreEqual("ed076287532e86365e841e92bfc50d8c", textHash);
Assert.AreEqual("2f249230a8e7c2bf6005ccd2679259ec", bytesHash);
Assert.AreEqual("ed076287532e86365e841e92bfc50d8c", fileHash);
}
[TestMethod]
public void ShouldReturnSha1Hash()
{
// arrange
string text = "Hello World!";
byte[] bytes = new byte[] { 0xde, 0xad, 0xbe, 0xef };
string fileName = Path.GetTempFileName();
// act
string textHash = CryptographyHelper.Sha1(text);
string bytesHash = CryptographyHelper.Sha1(bytes);
File.WriteAllText(fileName, text);
string fileHash = CryptographyHelper.Sha1File(fileName);
File.Delete(fileName);
// assert
Assert.AreEqual("2ef7bde608ce5404e97d5f042f95f89f1c232871", textHash);
Assert.AreEqual("d78f8bb992a56a597f6c7a1fb918bb78271367eb", bytesHash);
Assert.AreEqual("2ef7bde608ce5404e97d5f042f95f89f1c232871", fileHash);
}
[TestMethod]
public void ShouldReturnSha256Hash()
{
// arrange
string text = "Hello World!";
byte[] bytes = new byte[] { 0xde, 0xad, 0xbe, 0xef };
string fileName = Path.GetTempFileName();
// act
string textHash = CryptographyHelper.Sha256(text);
string bytesHash = CryptographyHelper.Sha256(bytes);
File.WriteAllText(fileName, text);
string fileHash = CryptographyHelper.Sha256File(fileName);
File.Delete(fileName);
// assert
Assert.AreEqual("7f83b1657ff1fc53b92dc18148a1d65dfc2d4b1fa3d677284addd200126d9069", textHash);
Assert.AreEqual("5f78c33274e43fa9de5659265c1d917e25c03722dcb0b8d27db8d5feaa813953", bytesHash);
Assert.AreEqual("7f83b1657ff1fc53b92dc18148a1d65dfc2d4b1fa3d677284addd200126d9069", fileHash);
}
[TestMethod]
public void ShouldReturnSha512Hash()
{
// arrange
string text = "Hello World!";
byte[] bytes = new byte[] { 0xde, 0xad, 0xbe, 0xef };
string fileName = Path.GetTempFileName();
// act
string textHash = CryptographyHelper.Sha512(text);
string bytesHash = CryptographyHelper.Sha512(bytes);
File.WriteAllText(fileName, text);
string fileHash = CryptographyHelper.Sha512File(fileName);
File.Delete(fileName);
// assert
Assert.AreEqual("861844d6704e8573fec34d967e20bcfef3d424cf48be04e6dc08f2bd58c729743371015ead891cc3cf1c9d34b49264b510751b1ff9e537937bc46b5d6ff4ecc8", textHash);
Assert.AreEqual("1284b2d521535196f22175d5f558104220a6ad7680e78b49fa6f20e57ea7b185d71ec1edb137e70eba528dedb141f5d2f8bb53149d262932b27cf41fed96aa7f", bytesHash);
Assert.AreEqual("861844d6704e8573fec34d967e20bcfef3d424cf48be04e6dc08f2bd58c729743371015ead891cc3cf1c9d34b49264b510751b1ff9e537937bc46b5d6ff4ecc8", fileHash);
}
#endregion Hash
#region Random
[TestMethod]
public void ShouldReturnRandomBytes()
{
// arrange
int length1 = 12;
int length2 = 12;
int length3 = 42;
// act
byte[] bytes1 = CryptographyHelper.GetRandomBytes(length1);
byte[] bytes2 = CryptographyHelper.GetRandomBytes(length2);
byte[] bytes3 = CryptographyHelper.GetRandomBytes(length3);
// assert
Assert.AreEqual(length1, bytes1.Length);
Assert.AreEqual(length2, bytes2.Length);
Assert.AreEqual(length3, bytes3.Length);
Assert.IsTrue(bytes1.Length == bytes2.Length);
CollectionAssert.AreNotEqual(bytes1, bytes2);
}
[TestMethod]
public void ShouldReturnRandomString()
{
// arrange
int length1 = 12;
int length2 = 12;
int length3 = 42;
// act
string str1 = CryptographyHelper.GetRandomString(length1);
string str2 = CryptographyHelper.GetRandomString(length2);
string str3 = CryptographyHelper.GetRandomString(length3);
// assert
Assert.AreEqual(length1, str1.Length);
Assert.AreEqual(length2, str2.Length);
Assert.AreEqual(length3, str3.Length);
Assert.IsTrue(str1.Length == str2.Length);
Assert.IsFalse(str1 == str2);
}
[TestMethod]
public void ShouldReturnRandomStringWithPool()
{
// arrange
int length = 12;
string pool = "0123456789abcdef";
// act
string str1 = CryptographyHelper.GetRandomString(length, pool);
string str2 = CryptographyHelper.GetRandomString(length, pool);
// assert
Assert.AreEqual(length, str1.Length);
Assert.AreEqual(length, str2.Length);
Assert.IsFalse(str1 == str2);
Assert.IsFalse(Regex.IsMatch(str1, "[^0-9a-f]"));
Assert.IsFalse(Regex.IsMatch(str2, "[^0-9a-f]"));
}
#endregion Random
#region Secure probing
[TestMethod]
public void ShouldTakeSameTimeToCompareString()
{
// arrange
string str1 = "Hello World!";
string str2 = "Hello World!";
string str3 = "Hallo World!";
string str4 = "Hello World?";
var sw = new Stopwatch();
// act
sw.Start();
bool compare1 = CryptographyHelper.SecureEquals(str1, str2);
long time1 = sw.ElapsedMilliseconds;
bool compare2 = CryptographyHelper.SecureEquals(str1, str3);
long time2 = sw.ElapsedMilliseconds;
bool compare3 = CryptographyHelper.SecureEquals(str1, str4);
long time3 = sw.ElapsedMilliseconds;
sw.Stop();
// assert
Assert.IsTrue(compare1);
Assert.IsFalse(compare2);
Assert.IsFalse(compare3);
// max. time delta: 2 ticks per character
Assert.AreEqual(time1, time2);
Assert.AreEqual(time1, time3);
Assert.AreEqual(time2, time3);
}
[TestMethod]
public void ShouldTakeSameTimeToCompareBytes()
{
// arrange
byte[] bytes1 = CryptographyHelper.GetRandomBytes(200);
byte[] bytes2 = new byte[bytes1.Length];
byte[] bytes3 = new byte[bytes1.Length];
byte[] bytes4 = new byte[bytes1.Length];
Array.Copy(bytes1, bytes2, bytes1.Length);
Array.Copy(bytes1, bytes3, bytes1.Length);
Array.Copy(bytes1, bytes4, bytes1.Length);
bytes3[10] = (byte)(bytes1[10] + 1);
bytes4[190] = (byte)(bytes1[190] + 1);
var sw = new Stopwatch();
// act
sw.Start();
bool compare1 = CryptographyHelper.SecureEquals(bytes1, bytes2);
long time1 = sw.ElapsedMilliseconds;
bool compare2 = CryptographyHelper.SecureEquals(bytes1, bytes3);
long time2 = sw.ElapsedMilliseconds;
bool compare3 = CryptographyHelper.SecureEquals(bytes1, bytes4);
long time3 = sw.ElapsedMilliseconds;
sw.Stop();
// assert
Assert.IsTrue(compare1);
Assert.IsFalse(compare2);
Assert.IsFalse(compare3);
// max. time delta: 2 ticks per byte
Assert.AreEqual(time1, time2);
Assert.AreEqual(time1, time3);
Assert.AreEqual(time2, time3);
}
#endregion Secure probing
#endregion Static
#region Instance
[TestMethod]
public void ShouldEncryptAesUsingKeyFile()
{
// arrange
string str = "Hello World!";
byte[] bytes = CryptographyHelper.GetRandomBytes(32);
string password = File.ReadAllText(keyFile);
// act
string cipherStr = cryptoHelper.EncryptAes(str);
byte[] cipherBytes = cryptoHelper.EncryptAes(bytes);
string plainStr = CryptographyHelper.AesDecrypt(cipherStr, password);
byte[] plainBytes = CryptographyHelper.AesDecrypt(cipherBytes, password);
// assert
Assert.AreNotEqual(str, cipherStr);
Assert.AreEqual(str, plainStr);
CollectionAssert.AreNotEqual(bytes, cipherBytes);
CollectionAssert.AreEqual(bytes, plainBytes);
}
[TestMethod]
public void ShouldDecryptAesUsingKeyFile()
{
// arrange
string str = "Hello World!";
byte[] bytes = CryptographyHelper.GetRandomBytes(32);
string password = File.ReadAllText(keyFile);
// act
string cipherStr = CryptographyHelper.AesEncrypt(str, password);
byte[] cipherBytes = CryptographyHelper.AesEncrypt(bytes, password);
string plainStr = cryptoHelper.DecryptAes(cipherStr);
byte[] plainBytes = cryptoHelper.DecryptAes(cipherBytes);
// assert
Assert.AreNotEqual(str, cipherStr);
Assert.AreEqual(str, plainStr);
CollectionAssert.AreNotEqual(bytes, cipherBytes);
CollectionAssert.AreEqual(bytes, plainBytes);
}
[TestMethod]
public void ShouldEncryptTdesUsingKeyFile()
{
// arrange
string str = "Hello World!";
byte[] bytes = CryptographyHelper.GetRandomBytes(32);
string password = File.ReadAllText(keyFile);
// act
string cipherStr = cryptoHelper.EncryptTripleDes(str);
byte[] cipherBytes = cryptoHelper.EncryptTripleDes(bytes);
string plainStr = CryptographyHelper.TripleDesDecrypt(cipherStr, password);
byte[] plainBytes = CryptographyHelper.TripleDesDecrypt(cipherBytes, password);
// assert
Assert.AreNotEqual(str, cipherStr);
Assert.AreEqual(str, plainStr);
CollectionAssert.AreNotEqual(bytes, cipherBytes);
CollectionAssert.AreEqual(bytes, plainBytes);
}
[TestMethod]
public void ShouldDecryptTdesUsingKeyFile()
{
// arrange
string str = "Hello World!";
byte[] bytes = CryptographyHelper.GetRandomBytes(32);
string password = File.ReadAllText(keyFile);
// act
string cipherStr = CryptographyHelper.TripleDesEncrypt(str, password);
byte[] cipherBytes = CryptographyHelper.TripleDesEncrypt(bytes, password);
string plainStr = cryptoHelper.DecryptTripleDes(cipherStr);
byte[] plainBytes = cryptoHelper.DecryptTripleDes(cipherBytes);
// assert
Assert.AreNotEqual(str, cipherStr);
Assert.AreEqual(str, plainStr);
CollectionAssert.AreNotEqual(bytes, cipherBytes);
CollectionAssert.AreEqual(bytes, plainBytes);
}
#endregion Instance
}
}

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AMWD.Common.Tests/Utilities/DelayedTaskTests.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace AMWD.Common.Tests.Utilities
{
[TestClass]
public class DelayedTaskTests
{
// TODO
}
}

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AMWD.Common.Tests/Utils/CryptographyHelperSaltMock.cs Normal file
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using System;
using System.Security.Cryptography;
using ReflectionMagic;
namespace AMWD.Common.Tests.Utils
{
[System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverage]
internal class CryptographyHelperSaltMock : IDisposable
{
private readonly int saltLength;
private CryptographyHelperSaltMock(int saltLength)
{
this.saltLength = typeof(CryptographyHelper).AsDynamicType().saltLength;
SetSaltLength(saltLength);
}
public static IDisposable Create(int saltLength)
=> new CryptographyHelperSaltMock(saltLength);
public void Dispose()
=> SetSaltLength(saltLength);
private static void SetSaltLength(int length)
=> typeof(CryptographyHelper).AsDynamicType().saltLength = length;
}
}

2
AMWD.Common.Tests/Utils/TimeZoneInfoLocalMock.cs
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@@ -4,7 +4,7 @@ using ReflectionMagic;
namespace AMWD.Common.Tests.Utils
{
[System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverage]
public class TimeZoneInfoLocalMock : IDisposable
internal class TimeZoneInfoLocalMock : IDisposable
{
private readonly TimeZoneInfo localTimeZoneInfo;