mirror of
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d888ff5381
This reverts commit 57316c52ba for files pertaining to importlib.metadata and importlib.resources.
252 lines
8 KiB
Python
252 lines
8 KiB
Python
import sys
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import unittest
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import uuid
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import pathlib
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from . import data01
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from . import zipdata01, zipdata02
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from .resources import util
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from importlib import resources, import_module
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from test.support import import_helper
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from test.support.os_helper import unlink
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class ResourceTests:
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# Subclasses are expected to set the `data` attribute.
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def test_is_file_exists(self):
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target = resources.files(self.data) / 'binary.file'
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self.assertTrue(target.is_file())
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def test_is_file_missing(self):
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target = resources.files(self.data) / 'not-a-file'
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self.assertFalse(target.is_file())
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def test_is_dir(self):
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target = resources.files(self.data) / 'subdirectory'
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self.assertFalse(target.is_file())
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self.assertTrue(target.is_dir())
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class ResourceDiskTests(ResourceTests, unittest.TestCase):
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def setUp(self):
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self.data = data01
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class ResourceZipTests(ResourceTests, util.ZipSetup, unittest.TestCase):
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pass
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def names(traversable):
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return {item.name for item in traversable.iterdir()}
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class ResourceLoaderTests(unittest.TestCase):
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def test_resource_contents(self):
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package = util.create_package(
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file=data01, path=data01.__file__, contents=['A', 'B', 'C']
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)
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self.assertEqual(names(resources.files(package)), {'A', 'B', 'C'})
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def test_is_file(self):
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package = util.create_package(
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file=data01, path=data01.__file__, contents=['A', 'B', 'C', 'D/E', 'D/F']
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)
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self.assertTrue(resources.files(package).joinpath('B').is_file())
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def test_is_dir(self):
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package = util.create_package(
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file=data01, path=data01.__file__, contents=['A', 'B', 'C', 'D/E', 'D/F']
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)
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self.assertTrue(resources.files(package).joinpath('D').is_dir())
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def test_resource_missing(self):
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package = util.create_package(
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file=data01, path=data01.__file__, contents=['A', 'B', 'C', 'D/E', 'D/F']
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)
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self.assertFalse(resources.files(package).joinpath('Z').is_file())
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class ResourceCornerCaseTests(unittest.TestCase):
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def test_package_has_no_reader_fallback(self):
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# Test odd ball packages which:
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# 1. Do not have a ResourceReader as a loader
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# 2. Are not on the file system
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# 3. Are not in a zip file
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module = util.create_package(
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file=data01, path=data01.__file__, contents=['A', 'B', 'C']
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)
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# Give the module a dummy loader.
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module.__loader__ = object()
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# Give the module a dummy origin.
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module.__file__ = '/path/which/shall/not/be/named'
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module.__spec__.loader = module.__loader__
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module.__spec__.origin = module.__file__
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self.assertFalse(resources.files(module).joinpath('A').is_file())
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class ResourceFromZipsTest01(util.ZipSetupBase, unittest.TestCase):
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ZIP_MODULE = zipdata01 # type: ignore
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def test_is_submodule_resource(self):
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submodule = import_module('ziptestdata.subdirectory')
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self.assertTrue(resources.files(submodule).joinpath('binary.file').is_file())
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def test_read_submodule_resource_by_name(self):
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self.assertTrue(
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resources.files('ziptestdata.subdirectory')
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.joinpath('binary.file')
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.is_file()
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)
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def test_submodule_contents(self):
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submodule = import_module('ziptestdata.subdirectory')
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self.assertEqual(
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names(resources.files(submodule)), {'__init__.py', 'binary.file'}
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)
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def test_submodule_contents_by_name(self):
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self.assertEqual(
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names(resources.files('ziptestdata.subdirectory')),
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{'__init__.py', 'binary.file'},
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)
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class ResourceFromZipsTest02(util.ZipSetupBase, unittest.TestCase):
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ZIP_MODULE = zipdata02 # type: ignore
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def test_unrelated_contents(self):
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"""
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Test thata zip with two unrelated subpackages return
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distinct resources. Ref python/importlib_resources#44.
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"""
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self.assertEqual(
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names(resources.files('ziptestdata.one')),
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{'__init__.py', 'resource1.txt'},
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)
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self.assertEqual(
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names(resources.files('ziptestdata.two')),
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{'__init__.py', 'resource2.txt'},
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)
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class DeletingZipsTest(unittest.TestCase):
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"""Having accessed resources in a zip file should not keep an open
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reference to the zip.
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"""
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ZIP_MODULE = zipdata01
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def setUp(self):
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modules = import_helper.modules_setup()
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self.addCleanup(import_helper.modules_cleanup, *modules)
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data_path = pathlib.Path(self.ZIP_MODULE.__file__)
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data_dir = data_path.parent
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self.source_zip_path = data_dir / 'ziptestdata.zip'
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self.zip_path = pathlib.Path(f'{uuid.uuid4()}.zip').absolute()
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self.zip_path.write_bytes(self.source_zip_path.read_bytes())
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sys.path.append(str(self.zip_path))
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self.data = import_module('ziptestdata')
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def tearDown(self):
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try:
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sys.path.remove(str(self.zip_path))
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except ValueError:
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pass
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try:
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del sys.path_importer_cache[str(self.zip_path)]
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del sys.modules[self.data.__name__]
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except KeyError:
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pass
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try:
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unlink(self.zip_path)
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except OSError:
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# If the test fails, this will probably fail too
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pass
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def test_iterdir_does_not_keep_open(self):
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c = [item.name for item in resources.files('ziptestdata').iterdir()]
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self.zip_path.unlink()
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del c
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def test_is_file_does_not_keep_open(self):
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c = resources.files('ziptestdata').joinpath('binary.file').is_file()
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self.zip_path.unlink()
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del c
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def test_is_file_failure_does_not_keep_open(self):
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c = resources.files('ziptestdata').joinpath('not-present').is_file()
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self.zip_path.unlink()
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del c
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@unittest.skip("Desired but not supported.")
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def test_as_file_does_not_keep_open(self): # pragma: no cover
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c = resources.as_file(resources.files('ziptestdata') / 'binary.file')
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self.zip_path.unlink()
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del c
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def test_entered_path_does_not_keep_open(self):
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# This is what certifi does on import to make its bundle
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# available for the process duration.
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c = resources.as_file(
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resources.files('ziptestdata') / 'binary.file'
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).__enter__()
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self.zip_path.unlink()
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del c
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def test_read_binary_does_not_keep_open(self):
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c = resources.files('ziptestdata').joinpath('binary.file').read_bytes()
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self.zip_path.unlink()
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del c
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def test_read_text_does_not_keep_open(self):
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c = resources.files('ziptestdata').joinpath('utf-8.file').read_text()
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self.zip_path.unlink()
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del c
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class ResourceFromNamespaceTest01(unittest.TestCase):
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site_dir = str(pathlib.Path(__file__).parent)
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@classmethod
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def setUpClass(cls):
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sys.path.append(cls.site_dir)
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@classmethod
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def tearDownClass(cls):
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sys.path.remove(cls.site_dir)
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def test_is_submodule_resource(self):
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self.assertTrue(
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resources.files(import_module('namespacedata01'))
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.joinpath('binary.file')
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.is_file()
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)
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def test_read_submodule_resource_by_name(self):
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self.assertTrue(
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resources.files('namespacedata01').joinpath('binary.file').is_file()
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)
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def test_submodule_contents(self):
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contents = names(resources.files(import_module('namespacedata01')))
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try:
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contents.remove('__pycache__')
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except KeyError:
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pass
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self.assertEqual(contents, {'binary.file', 'utf-8.file', 'utf-16.file'})
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def test_submodule_contents_by_name(self):
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contents = names(resources.files('namespacedata01'))
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try:
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contents.remove('__pycache__')
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except KeyError:
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pass
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self.assertEqual(contents, {'binary.file', 'utf-8.file', 'utf-16.file'})
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if __name__ == '__main__':
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unittest.main()
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