tests: consistently use pyflakes as a Python module
We check availability of pyflakes as a module, and also running it for real as
a module. Only fair to test filterpyflakes.py working correctly when using
pyflakes as a module too.
This is a graft of a similar fix that ended up on default.
Differential Revision: https://phab.mercurial-scm.org/D8629
#require test-repo pyflakes hg10
$ . "$TESTDIR/helpers-testrepo.sh"
run pyflakes on all tracked files ending in .py or without a file ending
(skipping binary file random-seed)
$ cat > test.py <<EOF
> print(undefinedname)
> EOF
$ $PYTHON -m pyflakes test.py 2>/dev/null | "$TESTDIR/filterpyflakes.py"
test.py:1: undefined name 'undefinedname'
$ cd "`dirname "$TESTDIR"`"
$ testrepohg locate 'set:**.py or grep("^#!.*python")' \
> -X hgext/fsmonitor/pywatchman \
> -X mercurial/pycompat.py -X contrib/python-zstandard \
> -X mercurial/thirdparty \
> 2>/dev/null \
> | xargs $PYTHON -m pyflakes 2>/dev/null | "$TESTDIR/filterpyflakes.py"
contrib/perf.py:*: undefined name 'xrange' (glob) (?)
mercurial/hgweb/server.py:*: undefined name 'reload' (glob) (?)
mercurial/util.py:*: undefined name 'file' (glob) (?)
mercurial/encoding.py:*: undefined name 'localstr' (glob) (?)