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import io
import pathlib
import unittest
from importlib import resources
from . import util
class CommonTests(util.CommonTests, unittest.TestCase):
def execute(self, package, path):
with resources.as_file(resources.files(package).joinpath(path)):
pass
class PathTests:
def test_reading(self):
"""
Path should be readable and a pathlib.Path instance.
"""
target = resources.files(self.data) / 'utf-8.file'
with resources.as_file(target) as path:
self.assertIsInstance(path, pathlib.Path)
self.assertEndsWith(path.name, "utf-8.file")
self.assertEqual('Hello, UTF-8 world!\n', path.read_text(encoding='utf-8'))
class PathDiskTests(PathTests, util.DiskSetup, unittest.TestCase):
def test_natural_path(self):
# Guarantee the internal implementation detail that
# file-system-backed resources do not get the tempdir
# treatment.
target = resources.files(self.data) / 'utf-8.file'
with resources.as_file(target) as path:
assert 'data' in str(path)
class PathMemoryTests(PathTests, unittest.TestCase):
def setUp(self):
file = io.BytesIO(b'Hello, UTF-8 world!\n')
self.addCleanup(file.close)
self.data = util.create_package(
file=file, path=FileNotFoundError("package exists only in memory")
)
self.data.__spec__.origin = None
self.data.__spec__.has_location = False
class PathZipTests(PathTests, util.ZipSetup, unittest.TestCase):
def test_remove_in_context_manager(self):
"""
It is not an error if the file that was temporarily stashed on the
file system is removed inside the `with` stanza.
"""
target = resources.files(self.data) / 'utf-8.file'
with resources.as_file(target) as path:
path.unlink()
if __name__ == '__main__':
unittest.main()
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