Method test_copyfile_same_file

Lib/test/test_shutil.py:1571–1581

(self)

        self.assertEqual(read_file(src_file), read_file(dst_file))

    def test_copyfile_same_file(self):
        # copyfile() should raise SameFileError if the source and destination
        # are the same.
        src_dir = self.mkdtemp()
        src_file = os.path.join(src_dir, 'foo')
        create_file(src_file, 'foo')
        self.assertRaises(SameFileError, shutil.copyfile, src_file, src_file)
        # But Error should work too, to stay backward compatible.
        self.assertRaises(Error, shutil.copyfile, src_file, src_file)
        # Make sure file is not corrupted.
        self.assertEqual(read_file(src_file), 'foo')

    @unittest.skipIf(MACOS or SOLARIS or _winapi, 'On MACOS, Solaris and Windows the errors are not confusing (though different)')
    # gh-92670: The test uses a trailing slash to force the OS consider