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import sys
import tempfile
import os
import zipfile
import pkg_resources
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 = []
@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 = 2013, 5, 12, 13, 25, 0
zip_egg.writestr(zip_info, 'x = 3\n')
zip_info = zipfile.ZipInfo()
zip_info.filename = 'data.dat'
zip_info.date_time = 2013, 5, 12, 13, 25, 0
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')
assert os.stat(filename).st_mtime == 1368379500
f = open(filename, 'wb')
f.write('hello, world?')
f.close()
os.utime(filename, (1368379500, 1368379500))
filename = zp.get_resource_filename(manager, 'data.dat')
f = open(filename)
assert f.read() == 'hello, world!'
manager.cleanup_resources()
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