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"""
Implementation
"""
import os as _os
import shlex as _shlex
import contextlib as _contextlib
import sys as _sys
import operator as _operator
import itertools as _itertools
import warnings as _warnings
import pkg_resources
import setuptools.command.test as orig
from setuptools import Distribution
@_contextlib.contextmanager
def _save_argv(repl=None):
saved = _sys.argv[:]
if repl is not None:
_sys.argv[:] = repl
try:
yield saved
finally:
_sys.argv[:] = saved
class CustomizedDist(Distribution):
allow_hosts = None
index_url = None
def fetch_build_egg(self, req):
"""Specialized version of Distribution.fetch_build_egg
that respects respects allow_hosts and index_url."""
from setuptools.command.easy_install import easy_install
dist = Distribution({'script_args': ['easy_install']})
dist.parse_config_files()
opts = dist.get_option_dict('easy_install')
keep = (
'find_links',
'site_dirs',
'index_url',
'optimize',
'site_dirs',
'allow_hosts',
)
for key in list(opts):
if key not in keep:
del opts[key] # don't use any other settings
if self.dependency_links:
links = self.dependency_links[:]
if 'find_links' in opts:
links = opts['find_links'][1].split() + links
opts['find_links'] = ('setup', links)
if self.allow_hosts:
opts['allow_hosts'] = ('test', self.allow_hosts)
if self.index_url:
opts['index_url'] = ('test', self.index_url)
install_dir_func = getattr(self, 'get_egg_cache_dir', _os.getcwd)
install_dir = install_dir_func()
cmd = easy_install(
dist,
args=["x"],
install_dir=install_dir,
exclude_scripts=True,
always_copy=False,
build_directory=None,
editable=False,
upgrade=False,
multi_version=True,
no_report=True,
user=False,
)
cmd.ensure_finalized()
return cmd.easy_install(req)
class PyTest(orig.test):
"""
>>> import setuptools
>>> dist = setuptools.Distribution()
>>> cmd = PyTest(dist)
"""
user_options = [
('extras', None, "Install (all) setuptools extras when running tests"),
(
'index-url=',
None,
"Specify an index url from which to retrieve " "dependencies",
),
(
'allow-hosts=',
None,
"Whitelist of comma-separated hosts to allow "
"when retrieving dependencies",
),
(
'addopts=',
None,
"Additional options to be passed verbatim to the " "pytest runner",
),
]
def initialize_options(self):
self.extras = False
self.index_url = None
self.allow_hosts = None
self.addopts = []
self.ensure_setuptools_version()
@staticmethod
def ensure_setuptools_version():
"""
Due to the fact that pytest-runner is often required (via
setup-requires directive) by toolchains that never invoke
it (i.e. they're only installing the package, not testing it),
instead of declaring the dependency in the package
metadata, assert the requirement at run time.
"""
pkg_resources.require('setuptools>=27.3')
def finalize_options(self):
if self.addopts:
self.addopts = _shlex.split(self.addopts)
@staticmethod
def marker_passes(marker):
"""
Given an environment marker, return True if the marker is valid
and matches this environment.
"""
return (
not marker
or not pkg_resources.invalid_marker(marker)
and pkg_resources.evaluate_marker(marker)
)
def install_dists(self, dist):
"""
Extend install_dists to include extras support
"""
return _itertools.chain(
orig.test.install_dists(dist), self.install_extra_dists(dist)
)
def install_extra_dists(self, dist):
"""
Install extras that are indicated by markers or
install all extras if '--extras' is indicated.
"""
extras_require = dist.extras_require or {}
spec_extras = (
(spec.partition(':'), reqs) for spec, reqs in extras_require.items()
)
matching_extras = (
reqs
for (name, sep, marker), reqs in spec_extras
# include unnamed extras or all if self.extras indicated
if (not name or self.extras)
# never include extras that fail to pass marker eval
and self.marker_passes(marker)
)
results = list(map(dist.fetch_build_eggs, matching_extras))
return _itertools.chain.from_iterable(results)
@staticmethod
def _warn_old_setuptools():
msg = (
"pytest-runner will stop working on this version of setuptools; "
"please upgrade to setuptools 30.4 or later or pin to "
"pytest-runner < 5."
)
ver_str = pkg_resources.get_distribution('setuptools').version
ver = pkg_resources.parse_version(ver_str)
if ver < pkg_resources.parse_version('30.4'):
_warnings.warn(msg)
def run(self):
"""
Override run to ensure requirements are available in this session (but
don't install them anywhere).
"""
self._warn_old_setuptools()
dist = CustomizedDist()
for attr in 'allow_hosts index_url'.split():
setattr(dist, attr, getattr(self, attr))
for attr in (
'dependency_links install_requires ' 'tests_require extras_require '
).split():
setattr(dist, attr, getattr(self.distribution, attr))
installed_dists = self.install_dists(dist)
if self.dry_run:
self.announce('skipping tests (dry run)')
return
paths = map(_operator.attrgetter('location'), installed_dists)
with self.paths_on_pythonpath(paths):
with self.project_on_sys_path():
return self.run_tests()
@property
def _argv(self):
return ['pytest'] + self.addopts
def run_tests(self):
"""
Invoke pytest, replacing argv. Return result code.
"""
with _save_argv(_sys.argv[:1] + self.addopts):
result_code = __import__('pytest').main()
if result_code:
raise SystemExit(result_code)
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