public void DynamicMessagePackedSerialization()
{
IBuilder builder = DynamicMessage.CreateBuilder(TestPackedTypes.Descriptor);
packedReflectionTester.SetPackedFieldsViaReflection(builder);
IMessage message = builder.WeakBuild();
ByteString rawBytes = message.ToByteString();
TestPackedTypes message2 = TestPackedTypes.ParseFrom(rawBytes);
TestUtil.AssertPackedFieldsSet(message2);
// In fact, the serialized forms should be exactly the same, byte-for-byte.
Assert.AreEqual(TestUtil.GetPackedSet().ToByteString(), rawBytes);
}