The test for this package contains a test case (disabled by default) that exercises the code against libotr (the reference implementation). Since that test was written, libotr has updated to version 4 which contains non-backwards-compatible API changes. This change updates the test harness for version 4 of libotr. Change-Id: Ib40c899c609cc827903ae18fd80476d179bf0a33 Reviewed-on: https://go-review.googlesource.com/16936 Reviewed-by: Andrew Gerrand <adg@golang.org>