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import sys
import tempfile
import os
import zipfile
import datetime
import time
import subprocess
import stat
import pytest
import pkg_resources
from setuptools.tests.textwrap import DALS
from setuptools.tests import contexts
from setuptools.tests import environment
try:
unicode
except NameError:
unicode = str
def timestamp(dt):
"""
Return a timestamp for a local, naive datetime instance.
"""
try:
return dt.timestamp()
except AttributeError:
# Python 3.2 and earlier
return time.mktime(dt.timetuple())
class EggRemover(unicode):
def __call__(self):
if self in sys.path:
sys.path.remove(self)
if os.path.exists(self):
os.remove(self)
class TestZipProvider(object):
finalizers = []
ref_time = datetime.datetime(2013, 5, 12, 13, 25, 0)
"A reference time for a file modification"
@classmethod
def setup_class(cls):
"create a zip egg and add it to sys.path"
egg = tempfile.NamedTemporaryFile(suffix='.egg', delete=False)
zip_egg = zipfile.ZipFile(egg, 'w')
zip_info = zipfile.ZipInfo()
zip_info.filename = 'mod.py'
zip_info.date_time = cls.ref_time.timetuple()
zip_egg.writestr(zip_info, 'x = 3\n')
zip_info = zipfile.ZipInfo()
zip_info.filename = 'data.dat'
zip_info.date_time = cls.ref_time.timetuple()
zip_egg.writestr(zip_info, 'hello, world!')
zip_egg.close()
egg.close()
sys.path.append(egg.name)
cls.finalizers.append(EggRemover(egg.name))
@classmethod
def teardown_class(cls):
for finalizer in cls.finalizers:
finalizer()
def test_resource_filename_rewrites_on_change(self):
"""
If a previous call to get_resource_filename has saved the file, but
the file has been subsequently mutated with different file of the
same size and modification time, it should not be overwritten on a
subsequent call to get_resource_filename.
"""
import mod
manager = pkg_resources.ResourceManager()
zp = pkg_resources.ZipProvider(mod)
filename = zp.get_resource_filename(manager, 'data.dat')
actual = datetime.datetime.fromtimestamp(os.stat(filename).st_mtime)
assert actual == self.ref_time
f = open(filename, 'w')
f.write('hello, world?')
f.close()
ts = timestamp(self.ref_time)
os.utime(filename, (ts, ts))
filename = zp.get_resource_filename(manager, 'data.dat')
f = open(filename)
assert f.read() == 'hello, world!'
manager.cleanup_resources()
class TestResourceManager(object):
def test_get_cache_path(self):
mgr = pkg_resources.ResourceManager()
path = mgr.get_cache_path('foo')
type_ = str(type(path))
message = "Unexpected type from get_cache_path: " + type_
assert isinstance(path, (unicode, str)), message
class TestIndependence:
"""
Tests to ensure that pkg_resources runs independently from setuptools.
"""
def test_setuptools_not_imported(self):
"""
In a separate Python environment, import pkg_resources and assert
that action doesn't cause setuptools to be imported.
"""
lines = (
'import pkg_resources',
'import sys',
'assert "setuptools" not in sys.modules, '
'"setuptools was imported"',
)
cmd = [sys.executable, '-c', '; '.join(lines)]
subprocess.check_call(cmd)
class TestEggInfoDistutils(object):
version = '1.11.0.dev0+2329eae'
setup_script = DALS("""
from distutils.core import setup
setup(
name='foo',
py_modules=['hello'],
version='%s',
)
""")
def _create_project(self):
with open('setup.py', 'w') as f:
f.write(self.setup_script % self.version)
with open('hello.py', 'w') as f:
f.write(DALS("""
def run():
print('hello')
"""))
@pytest.yield_fixture
def env(self):
class Environment(str):
pass
with contexts.tempdir(prefix='setuptools-test.') as env_dir:
env = Environment(env_dir)
os.chmod(env_dir, stat.S_IRWXU)
subs = 'home', 'lib', 'scripts', 'data', 'egg-base'
env.paths = dict(
(dirname, os.path.join(env_dir, dirname))
for dirname in subs
)
list(map(os.mkdir, env.paths.values()))
config = os.path.join(env.paths['home'], '.pydistutils.cfg')
with open(config, 'w') as f:
f.write(DALS("""
[egg_info]
egg-base = %(egg-base)s
""" % env.paths))
yield env
def test_version_resolved_from_egg_info(self, tmpdir_cwd, env):
self._create_project()
environ = os.environ.copy().update(
HOME=env.paths['home'],
)
cmd = [
'install',
'--home', env.paths['home'],
'--install-lib', env.paths['lib'],
'--install-scripts', env.paths['scripts'],
'--install-data', env.paths['data'],
]
code, data = environment.run_setup_py(
cmd=cmd,
pypath=os.pathsep.join([env.paths['lib'], str(tmpdir_cwd)]),
data_stream=1,
env=environ,
)
if code:
raise AssertionError(data)
actual = self._find_egg_info_file(env.paths['lib'])
# On Py3k it can be e.g. foo-1.11.0.dev0_2329eae-py3.4.egg-info
# but 2.7 doesn't add the Python version, so to be expedient we
# just check our start and end, omitting the potential version num
assert actual.startswith('foo-' + self.version.replace('+', '_'))
assert actual.endswith('.egg-info')
# this requirement parsing will raise a VersionConflict unless the
# .egg-info file is parsed (see #419 on BitBucket)
req = pkg_resources.Requirement.parse('foo>=1.9')
dist = pkg_resources.WorkingSet([env.paths['lib']]).find(req)
assert dist.version == self.version
def _find_egg_info_file(self, root):
# expect exactly one result
result = (filename for dirpath, dirnames, filenames in os.walk(root)
for filename in filenames if filename.endswith('.egg-info'))
result, = result
return result
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