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Editing: test_path.py

import io
import pathlib
import unittest

import importlib_resources as 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:
            assert isinstance(path, pathlib.Path)
            assert path.name.endswith("utf-8.file"), repr(path)
            assert '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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