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#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2022 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using NUnit.Framework;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Google.Protobuf.Test;
internal class WritingPrimitivesTest
{
[Test]
public void WriteRawString_IllFormedUnicodeString()
{
// See https://codeblog.jonskeet.uk/2014/11/07/when-is-a-string-not-a-string/
char c1 = '\u0058';
char c2 = '\ud800';
char c3 = '\u0059';
string text = new string(new[] { c1, c2, c3 });
Span<byte> buffer = new byte[10];
WriteContext.Initialize(ref buffer, out var context);
WritingPrimitives.WriteString(ref context.buffer, ref context.state, text);
// The high surrogate is written out in a "raw" form, surrounded by the ASCII
// characters.
byte[] expectedBytes = { 0x5, 0x58, 0xef, 0xbf, 0xbd, 0x59 };
Assert.AreEqual(expectedBytes, buffer.Slice(0, context.state.position).ToArray());
}
}