public void Basic_decoding_with_invalid_input___InvalidData(string input, int expectedConsumed, int expectedWritten)
{
var sut = new Base64UrlEncoder();
ReadOnlySpan <T> encoded;
if (typeof(T) == typeof(byte))
{
ReadOnlySpan <byte> tmp = Encoding.ASCII.GetBytes(input);
encoded = MemoryMarshal.Cast <byte, T>(tmp);
}
else if (typeof(T) == typeof(char))
{
encoded = MemoryMarshal.Cast <char, T>(input.AsSpan()); // .AsSpan() for net48
}
else
{
throw new NotSupportedException(); // just in case new types are introduced in the future
}
Span <byte> data = new byte[sut.GetMaxDecodedLength(encoded.Length)];
OperationStatus status = sut.DecodeCore(encoded, data, out int consumed, out int written);
byte[] actualData = data.Slice(0, written).ToArray();
Assert.Multiple(() =>
{
Assert.AreEqual(OperationStatus.InvalidData, status);
Assert.AreEqual(expectedConsumed, consumed);
Assert.AreEqual(expectedWritten, written);
byte[] expectedData = Convert.FromBase64String(input.Substring(0, consumed).FromBase64Url());
CollectionAssert.AreEqual(expectedData, actualData);
});
}
public void Malformed_input___status_InvalidData(string input, bool isFinalBlock, int expectedConsumed, int expectedWritten)
{
var sut = new Base64UrlEncoder();
ReadOnlySpan <T> encoded;
if (typeof(T) == typeof(byte))
{
ReadOnlySpan <byte> tmp = Encoding.ASCII.GetBytes(input);
encoded = MemoryMarshal.Cast <byte, T>(tmp);
}
else if (typeof(T) == typeof(char))
{
encoded = MemoryMarshal.Cast <char, T>(input.AsSpan()); // AsSpan() for net48
}
else
{
throw new NotSupportedException(); // just in case new types are introduced in the future
}
Span <byte> data = new byte[sut.GetMaxDecodedLength(encoded.Length)];
OperationStatus status = sut.DecodeCore(encoded, data, out int consumed, out int written, isFinalBlock);
Assert.Multiple(() =>
{
Assert.AreEqual(OperationStatus.InvalidData, status);
Assert.AreEqual(expectedConsumed, consumed);
Assert.AreEqual(expectedWritten, written);
});
}
public void EncodedLength_1_to_50_given___correct_max_decoded_len()
{
var sut = new Base64UrlEncoder();
Assert.Multiple(() =>
{
for (int i = 1; i < 50; ++i)
{
var data = new byte[i];
string base64Url = Convert.ToBase64String(data).ToBase64Url();
int actual = sut.GetMaxDecodedLength(base64Url.Length);
Assert.GreaterOrEqual(actual, i);
}
});
}
public void Invalid_bytes___InvalidData(bool isFinalBlock)
{
var sut = new Base64UrlEncoder();
byte[] invalidBytes = TestHelper.GetInvalidBytes(Base64UrlEncoder.DecodingMap).ToArray();
Assume.That(invalidBytes.Length, Is.EqualTo(byte.MaxValue - 64 + 1));
T[] invalid = new T[invalidBytes.Length - 1];
if (typeof(T) == typeof(byte))
{
invalid = invalidBytes.Select(b => (T)(object)b).ToArray();
}
else if (typeof(T) == typeof(char))
{
invalid = invalidBytes.Select(b => (T)(object)(char)b).ToArray();
}
else
{
throw new NotSupportedException(); // just in case new types are introduced in the future
}
for (int j = 0; j < 8; ++j)
{
#pragma warning disable CA2014 // Do not use stackalloc in loops
Span <byte> tmp = stackalloc byte[8] {
50, 50, 50, 50, 80, 80, 80, 80
}; // valid input - "2222PPPP"
Span <T> encoded = stackalloc T[tmp.Length];
#pragma warning restore CA2014 // Do not use stackalloc in loops
if (typeof(T) == typeof(byte))
{
encoded = MemoryMarshal.Cast <byte, T>(tmp);
}
else if (typeof(T) == typeof(char))
{
for (int i = 0; i < tmp.Length; ++i)
{
encoded[i] = (T)(object)(char)tmp[i];
}
}
else
{
throw new NotSupportedException(); // just in case new types are introduced in the future
}
byte[] data = new byte[sut.GetMaxDecodedLength(encoded.Length)];
for (int i = 0; i < invalid.Length; ++i)
{
encoded[j] = invalid[i];
OperationStatus status = sut.DecodeCore <T>(encoded, data, out int consumed, out int written, isFinalBlock);
Assert.Multiple(() =>
{
Assert.AreEqual(OperationStatus.InvalidData, status, "j = {0}, i = {1}", j, i);
if (j < 4)
{
Assert.AreEqual(0, consumed, "j = {0}, i = {1}", j, i);
Assert.AreEqual(0, written, "j = {0}, i = {1}", j, i);
}
else
{
Assert.AreEqual(4, consumed, "j = {0}, i = {1}", j, i);
Assert.AreEqual(3, written, "j = {0}, i = {1}", j, i);
#if NETCOREAPP
string actual = Convert.ToBase64String(data.AsSpan(0, 3)).ToBase64Url();
#else
string actual = Convert.ToBase64String(data, 0, 3).ToBase64Url();
#endif
Assert.AreEqual("2222", actual, "j = {0}, i = {1}", j, i);
}
});
}
}
}
}
public void EncodedLength_is_negative___throws_ArgumentOutOfRange([Values(-1, int.MinValue)] int encodedLength)
{
var sut = new Base64UrlEncoder();
Assert.Throws <ArgumentOutOfRangeException>(() => sut.GetMaxDecodedLength(encodedLength));
}