cpython/Lib/test/test_importlib/resources/test_reader.py

138 lines
4.5 KiB
Python

import os.path
import pathlib
import unittest
from importlib import import_module
from importlib.readers import MultiplexedPath, NamespaceReader
from . import util
class MultiplexedPathTest(util.DiskSetup, unittest.TestCase):
MODULE = 'namespacedata01'
def setUp(self):
super().setUp()
self.folder = pathlib.Path(self.data.__path__[0])
self.data01 = pathlib.Path(self.load_fixture('data01').__file__).parent
self.data02 = pathlib.Path(self.load_fixture('data02').__file__).parent
def test_init_no_paths(self):
with self.assertRaises(FileNotFoundError):
MultiplexedPath()
def test_init_file(self):
with self.assertRaises(NotADirectoryError):
MultiplexedPath(self.folder / 'binary.file')
def test_iterdir(self):
contents = {path.name for path in MultiplexedPath(self.folder).iterdir()}
try:
contents.remove('__pycache__')
except (KeyError, ValueError):
pass
self.assertEqual(
contents, {'subdirectory', 'binary.file', 'utf-16.file', 'utf-8.file'}
)
def test_iterdir_duplicate(self):
contents = {
path.name for path in MultiplexedPath(self.folder, self.data01).iterdir()
}
for remove in ('__pycache__', '__init__.pyc'):
try:
contents.remove(remove)
except (KeyError, ValueError):
pass
self.assertEqual(
contents,
{'__init__.py', 'binary.file', 'subdirectory', 'utf-16.file', 'utf-8.file'},
)
def test_is_dir(self):
self.assertEqual(MultiplexedPath(self.folder).is_dir(), True)
def test_is_file(self):
self.assertEqual(MultiplexedPath(self.folder).is_file(), False)
def test_open_file(self):
path = MultiplexedPath(self.folder)
with self.assertRaises(FileNotFoundError):
path.read_bytes()
with self.assertRaises(FileNotFoundError):
path.read_text()
with self.assertRaises(FileNotFoundError):
path.open()
def test_join_path(self):
prefix = str(self.folder.parent)
path = MultiplexedPath(self.folder, self.data01)
self.assertEqual(
str(path.joinpath('binary.file'))[len(prefix) + 1 :],
os.path.join('namespacedata01', 'binary.file'),
)
sub = path.joinpath('subdirectory')
assert isinstance(sub, MultiplexedPath)
assert 'namespacedata01' in str(sub)
assert 'data01' in str(sub)
self.assertEqual(
str(path.joinpath('imaginary'))[len(prefix) + 1 :],
os.path.join('namespacedata01', 'imaginary'),
)
self.assertEqual(path.joinpath(), path)
def test_join_path_compound(self):
path = MultiplexedPath(self.folder)
assert not path.joinpath('imaginary/foo.py').exists()
def test_join_path_common_subdir(self):
prefix = str(self.data02.parent)
path = MultiplexedPath(self.data01, self.data02)
self.assertIsInstance(path.joinpath('subdirectory'), MultiplexedPath)
self.assertEqual(
str(path.joinpath('subdirectory', 'subsubdir'))[len(prefix) + 1 :],
os.path.join('data02', 'subdirectory', 'subsubdir'),
)
def test_repr(self):
self.assertEqual(
repr(MultiplexedPath(self.folder)),
f"MultiplexedPath('{self.folder}')",
)
def test_name(self):
self.assertEqual(
MultiplexedPath(self.folder).name,
os.path.basename(self.folder),
)
class NamespaceReaderTest(util.DiskSetup, unittest.TestCase):
MODULE = 'namespacedata01'
def test_init_error(self):
with self.assertRaises(ValueError):
NamespaceReader(['path1', 'path2'])
def test_resource_path(self):
namespacedata01 = import_module('namespacedata01')
reader = NamespaceReader(namespacedata01.__spec__.submodule_search_locations)
root = self.data.__path__[0]
self.assertEqual(
reader.resource_path('binary.file'), os.path.join(root, 'binary.file')
)
self.assertEqual(
reader.resource_path('imaginary'), os.path.join(root, 'imaginary')
)
def test_files(self):
reader = NamespaceReader(self.data.__spec__.submodule_search_locations)
root = self.data.__path__[0]
self.assertIsInstance(reader.files(), MultiplexedPath)
self.assertEqual(repr(reader.files()), f"MultiplexedPath('{root}')")
if __name__ == '__main__':
unittest.main()