public void TestSwap()
{
// Arrange
byte[] input = new byte[10];
(new RNGCryptoServiceProvider()).GetBytes(input);
var _rng = Substitute.For <RandomNumberGenerator>();
_rng.When(x => x.GetBytes(Arg.Any <byte[]>())).Do(x => ((byte[])x[0])[0] = 1);
RandomSwapImpl rsi = new RandomSwapImpl(_rng);
// Act
byte[] output = rsi.Swap(input, 0, input.Length);
byte[] input_firsthalf = new byte[input.Length / 2];
byte[] input_secondhalf = new byte[input.Length / 2];
Buffer.BlockCopy(input, 0, input_firsthalf, 0, input.Length / 2);
Buffer.BlockCopy(input, input.Length / 2, input_secondhalf, 0, input.Length / 2);
byte[] output_firsthalf = new byte[output.Length / 2];
byte[] output_secondhalf = new byte[output.Length / 2];
Buffer.BlockCopy(output, 0, output_firsthalf, 0, output.Length / 2);
Buffer.BlockCopy(output, output.Length / 2, output_secondhalf, 0, output.Length / 2);
// Assert
CollectionAssert.AreEqual(input_firsthalf, output_secondhalf, "Input first half != Output second half. Input was " + Environment.NewLine + Helper.ByteArrayToString(input) + Environment.NewLine + "Output was" + Environment.NewLine + Helper.ByteArrayToString(output));
CollectionAssert.AreEqual(input_secondhalf, output_firsthalf, "Input second half != Output first half. Input was " + Environment.NewLine + Helper.ByteArrayToString(input) + Environment.NewLine + "Output was" + Environment.NewLine + Helper.ByteArrayToString(output));
}
public void TestOddLengthInput()
{
// Arrange
byte[] input = new byte[1];
RandomSwapImpl rsi = new RandomSwapImpl();
// Act
byte[] output = rsi.Swap(input, 0, input.Length);
// Assert
}
public void TestNoSwap()
{
// Arrange
byte[] input = new byte[10];
(new RNGCryptoServiceProvider()).GetBytes(input);
var _rng = Substitute.For <RandomNumberGenerator>();
_rng.When(x => x.GetBytes(Arg.Any <byte[]>())).Do(x => ((byte[])x[0])[0] = 0);
RandomSwapImpl rsi = new RandomSwapImpl(_rng);
// Act
byte[] output = rsi.Swap(input, 0, input.Length);
// Assert
CollectionAssert.AreEqual(input, output, "Input was " + Environment.NewLine + Helper.ByteArrayToString(input) + Environment.NewLine + "Output was" + Environment.NewLine + Helper.ByteArrayToString(output));
}
