public void TestRoundTripWithTag()
{
var stream = new MemoryStream();
var codedOutput = new CodedOutputStream(stream);
codec.WriteTagAndValue(codedOutput, sampleValue);
codedOutput.Flush();
stream.Position = 0;
var codedInput = new CodedInputStream(stream);
codedInput.AssertNextTag(codec.Tag);
Assert.AreEqual(sampleValue, codec.Read(codedInput));
Assert.IsTrue(codedInput.IsAtEnd);
}
public void CodedInputStream_LimitReachedRightAfterTag()
{
MemoryStream ms = new MemoryStream();
var cos = new CodedOutputStream(ms);
cos.WriteTag(11, WireFormat.WireType.Varint);
Assert.AreEqual(1, cos.Position);
cos.WriteString("some extra padding"); // ensure is currentLimit distinct from the end of the buffer.
cos.Flush();
var cis = new CodedInputStream(ms.ToArray());
cis.PushLimit(1); // make sure we reach the limit right after reading the tag.
// we still must read the tag correctly, even though the tag is at the very end of our limited input
// (which is a corner case and will most likely result in an error when trying to read value of the field
// described by this tag, but it would be a logical error not to read the tag that's actually present).
// See https://github.com/protocolbuffers/protobuf/pull/7289
cis.AssertNextTag(WireFormat.MakeTag(11, WireFormat.WireType.Varint));
}