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48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
import contextlib
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import importlib.resources as resources
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import pathlib
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import unittest
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from importlib.resources import abc
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from importlib.resources.abc import ResourceReader, TraversableResources
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from test.support import os_helper
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from . import util
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class SimpleLoader:
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"""
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A simple loader that only implements a resource reader.
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"""
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def __init__(self, reader: ResourceReader):
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self.reader = reader
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def get_resource_reader(self, package):
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return self.reader
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class MagicResources(TraversableResources):
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"""
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Magically returns the resources at path.
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"""
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def __init__(self, path: pathlib.Path):
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self.path = path
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def files(self):
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return self.path
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class CustomTraversableResourcesTests(unittest.TestCase):
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def setUp(self):
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self.fixtures = contextlib.ExitStack()
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self.addCleanup(self.fixtures.close)
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def test_custom_loader(self):
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temp_dir = pathlib.Path(self.fixtures.enter_context(os_helper.temp_dir()))
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loader = SimpleLoader(MagicResources(temp_dir))
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pkg = util.create_package_from_loader(loader)
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files = resources.files(pkg)
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assert isinstance(files, abc.Traversable)
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assert list(files.iterdir()) == []
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