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235 lines
8.4 KiB
Python
235 lines
8.4 KiB
Python
import sys
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import unittest
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import uuid
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from . import data01
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from . import zipdata01, zipdata02
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from . import util
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from importlib import resources, import_module
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from pathlib import Path
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from test import support
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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_resource_good_path(self):
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self.assertTrue(resources.is_resource(self.data, 'binary.file'))
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def test_is_resource_missing(self):
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self.assertFalse(resources.is_resource(self.data, 'not-a-file'))
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def test_is_resource_subresource_directory(self):
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# Directories are not resources.
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self.assertFalse(resources.is_resource(self.data, 'subdirectory'))
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def test_contents(self):
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contents = set(resources.contents(self.data))
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# There may be cruft in the directory listing of the data directory.
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# Under Python 3 we could have a __pycache__ directory, and under
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# Python 2 we could have .pyc files. These are both artifacts of the
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# test suite importing these modules and writing these caches. They
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# aren't germane to this test, so just filter them out.
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contents.discard('__pycache__')
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contents.discard('__init__.pyc')
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contents.discard('__init__.pyo')
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self.assertEqual(contents, {
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'__init__.py',
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'subdirectory',
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'utf-8.file',
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'binary.file',
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'utf-16.file',
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})
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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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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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self.assertEqual(
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set(resources.contents(package)),
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{'A', 'B', 'C'})
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def test_resource_is_resource(self):
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package = util.create_package(
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file=data01, path=data01.__file__,
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contents=['A', 'B', 'C', 'D/E', 'D/F'])
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self.assertTrue(resources.is_resource(package, 'B'))
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def test_resource_directory_is_not_resource(self):
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package = util.create_package(
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file=data01, path=data01.__file__,
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contents=['A', 'B', 'C', 'D/E', 'D/F'])
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self.assertFalse(resources.is_resource(package, 'D'))
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def test_resource_missing_is_not_resource(self):
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package = util.create_package(
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file=data01, path=data01.__file__,
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contents=['A', 'B', 'C', 'D/E', 'D/F'])
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self.assertFalse(resources.is_resource(package, 'Z'))
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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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# 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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if sys.version_info >= (3,):
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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.is_resource(module, 'A'))
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class ResourceFromZipsTest(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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# https://gitlab.com/python-devs/importlib_resources/issues/44
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#
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# Here we have a zip file with two unrelated subpackages. The bug
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# reports that getting the contents of a resource returns unrelated
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# files.
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self.assertEqual(
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set(resources.contents('ziptestdata.one')),
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{'__init__.py', 'resource1.txt'})
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self.assertEqual(
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set(resources.contents('ziptestdata.two')),
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{'__init__.py', 'resource2.txt'})
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class SubdirectoryResourceFromZipsTest(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(
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resources.is_resource(submodule, 'binary.file'))
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def test_read_submodule_resource_by_name(self):
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self.assertTrue(
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resources.is_resource('ziptestdata.subdirectory', 'binary.file'))
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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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set(resources.contents(submodule)),
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{'__init__.py', 'binary.file'})
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def test_submodule_contents_by_name(self):
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self.assertEqual(
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set(resources.contents('ziptestdata.subdirectory')),
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{'__init__.py', 'binary.file'})
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class NamespaceTest(unittest.TestCase):
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def test_namespaces_cannot_have_resources(self):
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contents = resources.contents('test.test_importlib.data03.namespace')
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self.assertFalse(list(contents))
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# Even though there is a file in the namespace directory, it is not
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# considered a resource, since namespace packages can't have them.
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self.assertFalse(resources.is_resource(
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'test.test_importlib.data03.namespace',
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'resource1.txt'))
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# We should get an exception if we try to read it or open it.
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self.assertRaises(
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FileNotFoundError,
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resources.open_text,
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'test.test_importlib.data03.namespace', 'resource1.txt')
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self.assertRaises(
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FileNotFoundError,
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resources.open_binary,
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'test.test_importlib.data03.namespace', 'resource1.txt')
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self.assertRaises(
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FileNotFoundError,
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resources.read_text,
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'test.test_importlib.data03.namespace', 'resource1.txt')
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self.assertRaises(
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FileNotFoundError,
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resources.read_binary,
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'test.test_importlib.data03.namespace', 'resource1.txt')
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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 = support.modules_setup()
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self.addCleanup(support.modules_cleanup, *modules)
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data_path = 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 = Path.cwd() / '{}.zip'.format(uuid.uuid4())
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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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support.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_contents_does_not_keep_open(self):
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c = resources.contents('ziptestdata')
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self.zip_path.unlink()
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def test_is_resource_does_not_keep_open(self):
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c = resources.is_resource('ziptestdata', 'binary.file')
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self.zip_path.unlink()
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def test_is_resource_failure_does_not_keep_open(self):
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c = resources.is_resource('ziptestdata', 'not-present')
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self.zip_path.unlink()
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def test_path_does_not_keep_open(self):
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c = resources.path('ziptestdata', 'binary.file')
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self.zip_path.unlink()
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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.path('ziptestdata', 'binary.file').__enter__()
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self.zip_path.unlink()
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def test_read_binary_does_not_keep_open(self):
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c = resources.read_binary('ziptestdata', 'binary.file')
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self.zip_path.unlink()
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def test_read_text_does_not_keep_open(self):
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c = resources.read_text('ziptestdata', 'utf-8.file', encoding='utf-8')
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self.zip_path.unlink()
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if __name__ == '__main__':
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unittest.main()
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