public static void WriteValue(CborWriter writer, object value, bool useDefiniteLengthCollections = true)
{
switch (value)
{
case null: writer.WriteNull(); break;
case bool b: writer.WriteBoolean(b); break;
case int i: writer.WriteInt64(i); break;
case long i: writer.WriteInt64(i); break;
case ulong i: writer.WriteUInt64(i); break;
case float f: writer.WriteSingle(f); break;
case double d: writer.WriteDouble(d); break;
case string s: writer.WriteTextString(s); break;
case byte[] b: writer.WriteByteString(b); break;
case byte[][] chunks: WriteChunkedByteString(writer, chunks); break;
case string[] chunks: WriteChunkedTextString(writer, chunks); break;
case object[] nested when IsCborMapRepresentation(nested): WriteMap(writer, nested, useDefiniteLengthCollections); break;
case object[] nested: WriteArray(writer, nested, useDefiniteLengthCollections); break;
default: throw new ArgumentException($"Unrecognized argument type {value.GetType()}");
}
;
}
public static void BytesWritten_SingleValue_ShouldReturnBytesWritten()
{
using var writer = new CborWriter();
Assert.Equal(0, writer.BytesWritten);
writer.WriteTextString("test");
Assert.Equal(5, writer.BytesWritten);
}
public static void ExecOperation(CborWriter writer, string op)
{
switch (op)
{
case nameof(writer.WriteInt64): writer.WriteInt64(42); break;
case nameof(writer.WriteByteString): writer.WriteByteString(Array.Empty <byte>()); break;
case nameof(writer.WriteTextString): writer.WriteTextString(""); break;
case nameof(writer.WriteStartTextStringIndefiniteLength): writer.WriteStartTextStringIndefiniteLength(); break;
case nameof(writer.WriteStartByteStringIndefiniteLength): writer.WriteStartByteStringIndefiniteLength(); break;
case nameof(writer.WriteStartArray): writer.WriteStartArrayIndefiniteLength(); break;
case nameof(writer.WriteStartMap): writer.WriteStartMapIndefiniteLength(); break;
case nameof(writer.WriteEndByteStringIndefiniteLength): writer.WriteEndByteStringIndefiniteLength(); break;
case nameof(writer.WriteEndTextStringIndefiniteLength): writer.WriteEndTextStringIndefiniteLength(); break;
case nameof(writer.WriteEndArray): writer.WriteEndArray(); break;
case nameof(writer.WriteEndMap): writer.WriteEndMap(); break;
default: throw new Exception($"Unrecognized CborWriter operation name {op}");
}
}
public static void WriteTextString_SingleValue_HappyPath(string input, string hexExpectedEncoding)
{
byte[] expectedEncoding = hexExpectedEncoding.HexToByteArray();
using var writer = new CborWriter();
writer.WriteTextString(input);
AssertHelper.HexEqual(expectedEncoding, writer.GetEncoding());
}
public static void WriteTextString_InvalidUnicodeString_ShouldThrowEncoderFallbackException()
{
// NB Xunit's InlineDataAttribute will corrupt string literals containing invalid unicode
string invalidUnicodeString = "\ud800";
using var writer = new CborWriter();
Assert.Throws <System.Text.EncoderFallbackException>(() => writer.WriteTextString(invalidUnicodeString));
}
public static void WriteValue(CborWriter writer, object value, bool useDefiniteLengthCollections = true)
{
switch (value)
{
case null: writer.WriteNull(); break;
case bool b: writer.WriteBoolean(b); break;
case int i: writer.WriteInt32(i); break;
case long i: writer.WriteInt64(i); break;
case ulong i: writer.WriteUInt64(i); break;
case float f: writer.WriteSingle(f); break;
case double d: writer.WriteDouble(d); break;
case decimal d: writer.WriteDecimal(d); break;
case string s: writer.WriteTextString(s); break;
case BigInteger i: writer.WriteBigInteger(i); break;
case DateTimeOffset d: writer.WriteDateTimeOffset(d); break;
case byte[] b: writer.WriteByteString(b); break;
case byte[][] chunks: WriteChunkedByteString(writer, chunks); break;
case string[] chunks when IsIndefiniteLengthByteString(chunks):
byte[][] byteChunks = chunks.Skip(1).Select(ch => ch.HexToByteArray()).ToArray();
WriteChunkedByteString(writer, byteChunks);
break;
case string[] chunks: WriteChunkedTextString(writer, chunks); break;
case object[] nested when IsCborMapRepresentation(nested): WriteMap(writer, nested, useDefiniteLengthCollections); break;
case object[] nested when IsEncodedValueRepresentation(nested):
byte[] encodedValue = ((string)nested[1]).HexToByteArray();
writer.WriteEncodedValue(encodedValue);
break;
case object[] nested when IsTaggedValueRepresentation(nested):
writer.WriteTag((CborTag)nested[0]);
WriteValue(writer, nested[1]);
break;
case object[] nested: WriteArray(writer, nested, useDefiniteLengthCollections); break;
default: throw new ArgumentException($"Unrecognized argument type {value.GetType()}");
}
;
}
public static void CborWriter_WritingTwoPrimitiveValues_ShouldThrowInvalidOperationException()
{
using var writer = new CborWriter();
writer.WriteInt64(42);
int bytesWritten = writer.BytesWritten;
Assert.Throws <InvalidOperationException>(() => writer.WriteTextString("lorem ipsum"));
Assert.Equal(bytesWritten, writer.BytesWritten);
}
public static void WriteChunkedTextString(CborWriter writer, string[] chunks)
{
writer.WriteStartTextStringIndefiniteLength();
foreach (string chunk in chunks)
{
writer.WriteTextString(chunk);
}
writer.WriteEndTextStringIndefiniteLength();
}
public static void Roundtrip_TextString(string?input)
{
using var writer = new CborWriter();
writer.WriteTextString(input);
byte[] encoding = writer.GetEncoding();
var reader = new CborReader(encoding);
string result = reader.ReadTextString();
Assert.Equal(input ?? "", result);
}
public static void WriteEncodedValue_IndefiniteLengthTextString_HappyPath()
{
using var writer = new CborWriter(encodeIndefiniteLengths: true);
writer.WriteStartTextString();
writer.WriteTextString("foo");
writer.WriteEncodedValue("63626172".HexToByteArray());
writer.WriteEndTextString();
byte[] encoding = writer.GetEncoding();
Assert.Equal("7f63666f6f63626172ff", encoding.ByteArrayToHex().ToLower());
}
public static void EndWriteMap_DefiniteLengthNotMet_ShouldThrowInvalidOperationException(int definiteLength)
{
using var writer = new CborWriter();
writer.WriteStartMap(definiteLength);
for (int i = 1; i < definiteLength; i++)
{
writer.WriteTextString($"key_{i}");
writer.WriteInt64(i);
}
Assert.Throws <InvalidOperationException>(() => writer.WriteEndMap());
}
public static void WriteEncodedValue_NestedValue_HappyPath(string hexEncodedValue)
{
byte[] encodedValue = hexEncodedValue.HexToByteArray();
using var writer = new CborWriter();
writer.WriteStartArray(3);
writer.WriteInt64(1);
writer.WriteEncodedValue(encodedValue);
writer.WriteTextString("");
writer.WriteEndArray();
string hexResult = writer.GetEncoding().ByteArrayToHex();
Assert.Equal("8301" + hexEncodedValue + "60", hexResult.ToLower());
}
public static void EndWriteMap_IndefiniteLength_EvenItems_ShouldThrowInvalidOperationException(int length)
{
using var writer = new CborWriter();
writer.WriteStartMapIndefiniteLength();
for (int i = 1; i < length; i++)
{
writer.WriteTextString($"key_{i}");
writer.WriteInt64(i);
}
writer.WriteInt64(0);
Assert.Throws <InvalidOperationException>(() => writer.WriteEndMap());
}
public static void WriteArray(CborWriter writer, params object[] values)
{
writer.WriteStartArray(values.Length);
foreach (object value in values)
{
switch (value)
{
case int i: writer.WriteInt64(i); break;
case string s: writer.WriteTextString(s); break;
case byte[] b: writer.WriteByteString(b); break;
case object[] nested: ArrayWriterHelper.WriteArray(writer, nested); break;
default: throw new ArgumentException($"Unrecognized argument type {value.GetType()}");
}
;
}
writer.WriteEndArray();
}
public static void WriteValue(CborWriter writer, object value)
{
switch (value)
{
case int i: writer.WriteInt64(i); break;
case long i: writer.WriteInt64(i); break;
case ulong i: writer.WriteUInt64(i); break;
case string s: writer.WriteTextString(s); break;
case byte[] b: writer.WriteByteString(b); break;
case object[] nested when IsCborMapRepresentation(nested): WriteMap(writer, nested); break;
case object[] nested: WriteArray(writer, nested); break;
default: throw new ArgumentException($"Unrecognized argument type {value.GetType()}");
}
;
}