add more tests
diff --git a/csharp/src/Google.Protobuf.Test/MessageParsingHelpers.cs b/csharp/src/Google.Protobuf.Test/MessageParsingHelpers.cs
index ec5f13a..031319e 100644
--- a/csharp/src/Google.Protobuf.Test/MessageParsingHelpers.cs
+++ b/csharp/src/Google.Protobuf.Test/MessageParsingHelpers.cs
@@ -33,6 +33,7 @@
using NUnit.Framework;
using System;
using System.Buffers;
+using Google.Protobuf.Buffers;
namespace Google.Protobuf
{
@@ -81,6 +82,11 @@
{
var bytes = message.ToByteArray();
+ // also serialize using IBufferWriter and check it leads to the same data
+ var bufferWriter = new ArrayBufferWriter<byte>();
+ message.WriteTo(bufferWriter);
+ Assert.AreEqual(bytes, bufferWriter.WrittenSpan.ToArray(), "Both serialization approaches need to result in the same data.");
+
// Load content as single segment
var parsedBuffer = parser.ParseFrom(new ReadOnlySequence<byte>(bytes));
Assert.AreEqual(message, parsedBuffer);
@@ -96,5 +102,18 @@
Assert.AreEqual(message, parsedStream);
additionalAssert?.Invoke(parsedStream);
}
+
+ public static void AssertWritingMessage(IMessage message)
+ {
+ // serialize using CodedOutputStream
+ var bytes = message.ToByteArray();
+
+ // also serialize using IBufferWriter and check it leads to the same data
+ var bufferWriter = new ArrayBufferWriter<byte>();
+ message.WriteTo(bufferWriter);
+ Assert.AreEqual(bytes, bufferWriter.WrittenSpan.ToArray(), "Both serialization approaches need to result in the same data.");
+
+ Assert.AreEqual(message.CalculateSize(), bytes.Length);
+ }
}
}
\ No newline at end of file
