tests: handle string escaping/encoding on Python 3 This code was failing on Python 3 for a few reasons: 1) sys.argv is str and str doesn't have a .decode() 2) the "string_escape" encoding was renamed to "unicode_escape" It is wonky casting to bytes to str to bytes. But this is test code, so meh. I don't believe we exercise any code paths in these tests where the arguments aren't ascii. Differential Revision: https://phab.mercurial-scm.org/D5667

convert: use raw strings for XML strings Due to the source transformer, we were passing bytes into the XML APIs. This results in not finding elements and doing compares against mismatched types. Use raw string literals so we use str everywhere. Differential Revision: https://phab.mercurial-scm.org/D5664

tests: normalize XML values to bytes This fixes some type mismatches. The encoding shouldn't matter for what this script is used for. UTF-8 seems reasonable, especially since I'm pretty sure SVN will emit UTF-8 encoded XML. Differential Revision: https://phab.mercurial-scm.org/D5665