tests: rename _bytespath() to _sys2bytes() and _strpath() to _sys2str() The names were not general enough because e.g. _strpath() was used for converting IP addresses.

tests: avoid implicit conversion of str to unicode On Python 2, str.encode('ascii') implicitly converts the string to unicode and then back to str. Since the converted value is a path, _bytespath can be used instead.

tests: avoid implicit conversion of str to unicode On Python 2, str.encode('ascii') implicitly converts the string to unicode and then back to str. Since the point of this expression is to convert a bool to a str, the '%r' conversion specifier can be used instead in the format string.

nodemap: warm the persistent nodemap on disk with debugupdatecache When appropriate, the nodemap cache file will be created. Differential Revision: https://phab.mercurial-scm.org/D8173

copies-tests: update to null after setup for output stability This avoid having '@' moving around in graph output when the graph evolves. after this change, graph evolution is still noisy, but less. Differential Revision: https://phab.mercurial-scm.org/D8236

copies-tests: remove extra log call at the end of the chain-merge test file We do not actually need theses as the graph is displayed earlier anyway. I think they are the remain of me trying to understand that case better. Differential Revision: https://phab.mercurial-scm.org/D8235

commit: print debug message when clearing dirstate and wdir clean This case is a little weird, so let's have a debug message. Differential Revision: https://phab.mercurial-scm.org/D8231

merge with stable

merge with stable

commands: switch one call of check_at_most_one_arg to strings This opts hasn't been through the byteskwargs mulcher, so we can just use strings here instead of bytes. Fixes the test changes from D8204 on Python 3, which was the only place this was a problem. Differential Revision: https://phab.mercurial-scm.org/D8222