setup: add a test for running setup.py
`python3 -m pip install hg-evolve==9.2.0` currently fails, despite 9.2.0 being
the first beta py3 release, because of unicode issues with the version number.
`setup.py install` is a proxy test for pip install since it also suffers from
similar, however the test currently fails due to running setup.py from a
different directory to the one it is in.
Also add a test for `hg version -v` with evolve enabled since a naive first
solution for the pip issue was to just change `__version__` to a `u''` string,
but that busts version display in `version -v`, which isn't currently picked up
by tests.
$ cat >> $HGRCPATH <<EOF
> [extensions]
> EOF
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
Test outputting version number
$ hg version -v
Mercurial Distributed SCM (version *) (glob)
(see https://mercurial-scm.org for more information)
Copyright (C) 2005-* Matt Mackall and others (glob)
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Enabled extensions:
evolve external * (glob)
Test install
BROKEN: can't call setup.py from a different dir
$ "$PYTHON" "$TESTDIR/../setup.py" install --root "$TESTTMP/installtest" > /dev/null
Traceback (most recent call last):
File "*/../setup.py", line *, in <module> (glob)
long_description=open('README').read(),
IOError: [Errno 2] No such file or directory: 'README' (no-py3 !)
FileNotFoundError: [Errno 2] No such file or directory: 'README' (py3 !)
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