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Editing: test_read.py

import unittest
from importlib import import_module

import importlib_resources as resources

from . import util

class CommonBinaryTests(util.CommonTests, unittest.TestCase):
    def execute(self, package, path):
        resources.files(package).joinpath(path).read_bytes()

class CommonTextTests(util.CommonTests, unittest.TestCase):
    def execute(self, package, path):
        resources.files(package).joinpath(path).read_text(encoding='utf-8')

class ReadTests:
    def test_read_bytes(self):
        result = resources.files(self.data).joinpath('binary.file').read_bytes()
        assert result == bytes(range(4))

def test_read_text_default_encoding(self):
        result = (
            resources
            .files(self.data)
            .joinpath('utf-8.file')
            .read_text(encoding='utf-8')
        )
        assert result == 'Hello, UTF-8 world!\n'

def test_read_text_given_encoding(self):
        result = (
            resources
            .files(self.data)
            .joinpath('utf-16.file')
            .read_text(encoding='utf-16')
        )
        assert result == 'Hello, UTF-16 world!\n'

def test_read_text_with_errors(self):
        """
        Raises UnicodeError without the 'errors' argument.
        """
        target = resources.files(self.data) / 'utf-16.file'
        self.assertRaises(UnicodeError, target.read_text, encoding='utf-8')
        result = target.read_text(encoding='utf-8', errors='ignore')
        assert result == (
            'H\x00e\x00l\x00l\x00o\x00,\x00 '
            '\x00U\x00T\x00F\x00-\x001\x006\x00 '
            '\x00w\x00o\x00r\x00l\x00d\x00!\x00\n\x00'
        )

class ReadDiskTests(ReadTests, util.DiskSetup, unittest.TestCase):
    pass

class ReadZipTests(ReadTests, util.ZipSetup, unittest.TestCase):
    def test_read_submodule_resource(self):
        submodule = import_module('data01.subdirectory')
        result = resources.files(submodule).joinpath('binary.file').read_bytes()
        assert result == bytes(range(4, 8))

def test_read_submodule_resource_by_name(self):
        result = (
            resources.files('data01.subdirectory').joinpath('binary.file').read_bytes()
        )
        assert result == bytes(range(4, 8))

class ReadNamespaceTests(ReadTests, util.DiskSetup, unittest.TestCase):
    MODULE = 'namespacedata01'

class ReadNamespaceZipTests(ReadTests, util.ZipSetup, unittest.TestCase):
    MODULE = 'namespacedata01'

def test_read_submodule_resource(self):
        submodule = import_module('namespacedata01.subdirectory')
        result = resources.files(submodule).joinpath('binary.file').read_bytes()
        assert result == bytes(range(12, 16))

def test_read_submodule_resource_by_name(self):
        result = (
            resources
            .files('namespacedata01.subdirectory')
            .joinpath('binary.file')
            .read_bytes()
        )
        assert result == bytes(range(12, 16))

if __name__ == '__main__':
    unittest.main()

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