diff --git a/Lib/test/test_plistlib.py b/Lib/test/test_plistlib.py
new file mode 100644
index 000000000..e4c4e0d3b
--- /dev/null
+++ b/Lib/test/test_plistlib.py
@@ -0,0 +1,1016 @@
+# Copyright (C) 2003-2013 Python Software Foundation
+import copy
+import operator
+import pickle
+import struct
+import unittest
+import plistlib
+import os
+import datetime
+import codecs
+import binascii
+import collections
+from test import support
+from test.support import os_helper
+from io import BytesIO
+
+from plistlib import UID
+
+ALL_FORMATS=(plistlib.FMT_XML, plistlib.FMT_BINARY)
+
+# The testdata is generated using Mac/Tools/plistlib_generate_testdata.py
+# (which using PyObjC to control the Cocoa classes for generating plists)
+TESTDATA={
+    plistlib.FMT_XML: binascii.a2b_base64(b'''
+        PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NU
+        WVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VO
+        IiAiaHR0cDovL3d3dy5hcHBsZS5jb20vRFREcy9Qcm9wZXJ0eUxpc3QtMS4w
+        LmR0ZCI+CjxwbGlzdCB2ZXJzaW9uPSIxLjAiPgo8ZGljdD4KCTxrZXk+YUJp
+        Z0ludDwva2V5PgoJPGludGVnZXI+OTIyMzM3MjAzNjg1NDc3NTc2NDwvaW50
+        ZWdlcj4KCTxrZXk+YUJpZ0ludDI8L2tleT4KCTxpbnRlZ2VyPjkyMjMzNzIw
+        MzY4NTQ3NzU4NTI8L2ludGVnZXI+Cgk8a2V5PmFEYXRlPC9rZXk+Cgk8ZGF0
+        ZT4yMDA0LTEwLTI2VDEwOjMzOjMzWjwvZGF0ZT4KCTxrZXk+YURpY3Q8L2tl
+        eT4KCTxkaWN0PgoJCTxrZXk+YUZhbHNlVmFsdWU8L2tleT4KCQk8ZmFsc2Uv
+        PgoJCTxrZXk+YVRydWVWYWx1ZTwva2V5PgoJCTx0cnVlLz4KCQk8a2V5PmFV
+        bmljb2RlVmFsdWU8L2tleT4KCQk8c3RyaW5nPk3DpHNzaWcsIE1hw588L3N0
+        cmluZz4KCQk8a2V5PmFub3RoZXJTdHJpbmc8L2tleT4KCQk8c3RyaW5nPiZs
+        dDtoZWxsbyAmYW1wOyAnaGknIHRoZXJlISZndDs8L3N0cmluZz4KCQk8a2V5
+        PmRlZXBlckRpY3Q8L2tleT4KCQk8ZGljdD4KCQkJPGtleT5hPC9rZXk+CgkJ
+        CTxpbnRlZ2VyPjE3PC9pbnRlZ2VyPgoJCQk8a2V5PmI8L2tleT4KCQkJPHJl
+        YWw+MzIuNTwvcmVhbD4KCQkJPGtleT5jPC9rZXk+CgkJCTxhcnJheT4KCQkJ
+        CTxpbnRlZ2VyPjE8L2ludGVnZXI+CgkJCQk8aW50ZWdlcj4yPC9pbnRlZ2Vy
+        PgoJCQkJPHN0cmluZz50ZXh0PC9zdHJpbmc+CgkJCTwvYXJyYXk+CgkJPC9k
+        aWN0PgoJPC9kaWN0PgoJPGtleT5hRmxvYXQ8L2tleT4KCTxyZWFsPjAuNTwv
+        cmVhbD4KCTxrZXk+YUxpc3Q8L2tleT4KCTxhcnJheT4KCQk8c3RyaW5nPkE8
+        L3N0cmluZz4KCQk8c3RyaW5nPkI8L3N0cmluZz4KCQk8aW50ZWdlcj4xMjwv
+        aW50ZWdlcj4KCQk8cmVhbD4zMi41PC9yZWFsPgoJCTxhcnJheT4KCQkJPGlu
+        dGVnZXI+MTwvaW50ZWdlcj4KCQkJPGludGVnZXI+MjwvaW50ZWdlcj4KCQkJ
+        PGludGVnZXI+MzwvaW50ZWdlcj4KCQk8L2FycmF5PgoJPC9hcnJheT4KCTxr
+        ZXk+YU5lZ2F0aXZlQmlnSW50PC9rZXk+Cgk8aW50ZWdlcj4tODAwMDAwMDAw
+        MDA8L2ludGVnZXI+Cgk8a2V5PmFOZWdhdGl2ZUludDwva2V5PgoJPGludGVn
+        ZXI+LTU8L2ludGVnZXI+Cgk8a2V5PmFTdHJpbmc8L2tleT4KCTxzdHJpbmc+
+        RG9vZGFoPC9zdHJpbmc+Cgk8a2V5PmFuRW1wdHlEaWN0PC9rZXk+Cgk8ZGlj
+        dC8+Cgk8a2V5PmFuRW1wdHlMaXN0PC9rZXk+Cgk8YXJyYXkvPgoJPGtleT5h
+        bkludDwva2V5PgoJPGludGVnZXI+NzI4PC9pbnRlZ2VyPgoJPGtleT5uZXN0
+        ZWREYXRhPC9rZXk+Cgk8YXJyYXk+CgkJPGRhdGE+CgkJUEd4dmRITWdiMlln
+        WW1sdVlYSjVJR2QxYm1zK0FBRUNBenhzYjNSeklHOW1JR0pwYm1GeWVTQm5k
+        VzVyCgkJUGdBQkFnTThiRzkwY3lCdlppQmlhVzVoY25rZ1ozVnVhejRBQVFJ
+        RFBHeHZkSE1nYjJZZ1ltbHVZWEo1CgkJSUdkMWJtcytBQUVDQXp4c2IzUnpJ
+        RzltSUdKcGJtRnllU0JuZFc1clBnQUJBZ004Ykc5MGN5QnZaaUJpCgkJYVc1
+        aGNua2daM1Z1YXo0QUFRSURQR3h2ZEhNZ2IyWWdZbWx1WVhKNUlHZDFibXMr
+        QUFFQ0F6eHNiM1J6CgkJSUc5bUlHSnBibUZ5ZVNCbmRXNXJQZ0FCQWdNOGJH
+        OTBjeUJ2WmlCaWFXNWhjbmtnWjNWdWF6NEFBUUlECgkJUEd4dmRITWdiMlln
+        WW1sdVlYSjVJR2QxYm1zK0FBRUNBdz09CgkJPC9kYXRhPgoJPC9hcnJheT4K
+        CTxrZXk+c29tZURhdGE8L2tleT4KCTxkYXRhPgoJUEdKcGJtRnllU0JuZFc1
+        clBnPT0KCTwvZGF0YT4KCTxrZXk+c29tZU1vcmVEYXRhPC9rZXk+Cgk8ZGF0
+        YT4KCVBHeHZkSE1nYjJZZ1ltbHVZWEo1SUdkMWJtcytBQUVDQXp4c2IzUnpJ
+        RzltSUdKcGJtRnllU0JuZFc1clBnQUJBZ004CgliRzkwY3lCdlppQmlhVzVo
+        Y25rZ1ozVnVhejRBQVFJRFBHeHZkSE1nYjJZZ1ltbHVZWEo1SUdkMWJtcytB
+        QUVDQXp4cwoJYjNSeklHOW1JR0pwYm1GeWVTQm5kVzVyUGdBQkFnTThiRzkw
+        Y3lCdlppQmlhVzVoY25rZ1ozVnVhejRBQVFJRFBHeHYKCWRITWdiMllnWW1s
+        dVlYSjVJR2QxYm1zK0FBRUNBenhzYjNSeklHOW1JR0pwYm1GeWVTQm5kVzVy
+        UGdBQkFnTThiRzkwCgljeUJ2WmlCaWFXNWhjbmtnWjNWdWF6NEFBUUlEUEd4
+        dmRITWdiMllnWW1sdVlYSjVJR2QxYm1zK0FBRUNBdz09Cgk8L2RhdGE+Cgk8
+        a2V5PsOFYmVucmFhPC9rZXk+Cgk8c3RyaW5nPlRoYXQgd2FzIGEgdW5pY29k
+        ZSBrZXkuPC9zdHJpbmc+CjwvZGljdD4KPC9wbGlzdD4K'''),
+    plistlib.FMT_BINARY: binascii.a2b_base64(b'''
+        YnBsaXN0MDDfEBABAgMEBQYHCAkKCwwNDg8QERITFCgpLzAxMjM0NTc2OFdh
+        QmlnSW50WGFCaWdJbnQyVWFEYXRlVWFEaWN0VmFGbG9hdFVhTGlzdF8QD2FO
+        ZWdhdGl2ZUJpZ0ludFxhTmVnYXRpdmVJbnRXYVN0cmluZ1thbkVtcHR5RGlj
+        dFthbkVtcHR5TGlzdFVhbkludFpuZXN0ZWREYXRhWHNvbWVEYXRhXHNvbWVN
+        b3JlRGF0YWcAxQBiAGUAbgByAGEAYRN/////////1BQAAAAAAAAAAIAAAAAA
+        AAAsM0GcuX30AAAA1RUWFxgZGhscHR5bYUZhbHNlVmFsdWVaYVRydWVWYWx1
+        ZV1hVW5pY29kZVZhbHVlXWFub3RoZXJTdHJpbmdaZGVlcGVyRGljdAgJawBN
+        AOQAcwBzAGkAZwAsACAATQBhAN9fEBU8aGVsbG8gJiAnaGknIHRoZXJlIT7T
+        HyAhIiMkUWFRYlFjEBEjQEBAAAAAAACjJSYnEAEQAlR0ZXh0Iz/gAAAAAAAA
+        pSorLCMtUUFRQhAMoyUmLhADE////+1foOAAE//////////7VkRvb2RhaNCg
+        EQLYoTZPEPo8bG90cyBvZiBiaW5hcnkgZ3Vuaz4AAQIDPGxvdHMgb2YgYmlu
+        YXJ5IGd1bms+AAECAzxsb3RzIG9mIGJpbmFyeSBndW5rPgABAgM8bG90cyBv
+        ZiBiaW5hcnkgZ3Vuaz4AAQIDPGxvdHMgb2YgYmluYXJ5IGd1bms+AAECAzxs
+        b3RzIG9mIGJpbmFyeSBndW5rPgABAgM8bG90cyBvZiBiaW5hcnkgZ3Vuaz4A
+        AQIDPGxvdHMgb2YgYmluYXJ5IGd1bms+AAECAzxsb3RzIG9mIGJpbmFyeSBn
+        dW5rPgABAgM8bG90cyBvZiBiaW5hcnkgZ3Vuaz4AAQIDTTxiaW5hcnkgZ3Vu
+        az5fEBdUaGF0IHdhcyBhIHVuaWNvZGUga2V5LgAIACsAMwA8AEIASABPAFUA
+        ZwB0AHwAiACUAJoApQCuALsAygDTAOQA7QD4AQQBDwEdASsBNgE3ATgBTwFn
+        AW4BcAFyAXQBdgF/AYMBhQGHAYwBlQGbAZ0BnwGhAaUBpwGwAbkBwAHBAcIB
+        xQHHAsQC0gAAAAAAAAIBAAAAAAAAADkAAAAAAAAAAAAAAAAAAALs'''),
+    'KEYED_ARCHIVE': binascii.a2b_base64(b'''
+        YnBsaXN0MDDUAQIDBAUGHB1YJHZlcnNpb25YJG9iamVjdHNZJGFyY2hpdmVy
+        VCR0b3ASAAGGoKMHCA9VJG51bGzTCQoLDA0OVnB5dHlwZVYkY2xhc3NZTlMu
+        c3RyaW5nEAGAAl8QE0tleUFyY2hpdmUgVUlEIFRlc3TTEBESExQZWiRjbGFz
+        c25hbWVYJGNsYXNzZXNbJGNsYXNzaGludHNfEBdPQ19CdWlsdGluUHl0aG9u
+        VW5pY29kZaQVFhcYXxAXT0NfQnVpbHRpblB5dGhvblVuaWNvZGVfEBBPQ19Q
+        eXRob25Vbmljb2RlWE5TU3RyaW5nWE5TT2JqZWN0ohobXxAPT0NfUHl0aG9u
+        U3RyaW5nWE5TU3RyaW5nXxAPTlNLZXllZEFyY2hpdmVy0R4fVHJvb3SAAQAI
+        ABEAGgAjAC0AMgA3ADsAQQBIAE8AVgBgAGIAZAB6AIEAjACVAKEAuwDAANoA
+        7QD2AP8BAgEUAR0BLwEyATcAAAAAAAACAQAAAAAAAAAgAAAAAAAAAAAAAAAA
+        AAABOQ=='''),
+}
+
+XML_PLIST_WITH_ENTITY=b'''\
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd" [
+   <!ENTITY entity "replacement text">
+  ]>
+<plist version="1.0">
+  <dict>
+    <key>A</key>
+    <string>&entity;</string>
+  </dict>
+</plist>
+'''
+
+INVALID_BINARY_PLISTS = [
+    ('too short data',
+        b''
+    ),
+    ('too large offset_table_offset and offset_size = 1',
+        b'\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x2a'
+    ),
+    ('too large offset_table_offset and nonstandard offset_size',
+        b'\x00\x00\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x03\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x2c'
+    ),
+    ('integer overflow in offset_table_offset',
+        b'\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\xff\xff\xff\xff\xff\xff\xff\xff'
+    ),
+    ('too large top_object',
+        b'\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x09'
+    ),
+    ('integer overflow in top_object',
+        b'\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\xff\xff\xff\xff\xff\xff\xff\xff'
+        b'\x00\x00\x00\x00\x00\x00\x00\x09'
+    ),
+    ('too large num_objects and offset_size = 1',
+        b'\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\xff'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x09'
+    ),
+    ('too large num_objects and nonstandard offset_size',
+        b'\x00\x00\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x03\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\xff'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x09'
+    ),
+    ('extremally large num_objects (32 bit)',
+        b'\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x7f\xff\xff\xff'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x09'
+    ),
+    ('extremally large num_objects (64 bit)',
+        b'\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\xff\xff\xff\xff\xff'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x09'
+    ),
+    ('integer overflow in num_objects',
+        b'\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\xff\xff\xff\xff\xff\xff\xff\xff'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x09'
+    ),
+    ('offset_size = 0',
+        b'\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x09'
+    ),
+    ('ref_size = 0',
+        b'\xa1\x01\x00\x08\x0a'
+        b'\x00\x00\x00\x00\x00\x00\x01\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x02'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0b'
+    ),
+    ('too large offset',
+        b'\x00\x2a'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x09'
+    ),
+    ('integer overflow in offset',
+        b'\x00\xff\xff\xff\xff\xff\xff\xff\xff'
+        b'\x00\x00\x00\x00\x00\x00\x08\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x09'
+    ),
+    ('too large array size',
+        b'\xaf\x00\x01\xff\x00\x08\x0c'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x02'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0d'
+    ),
+    ('extremally large array size (32-bit)',
+        b'\xaf\x02\x7f\xff\xff\xff\x01\x00\x08\x0f'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x02'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x10'
+    ),
+    ('extremally large array size (64-bit)',
+        b'\xaf\x03\x00\x00\x00\xff\xff\xff\xff\xff\x01\x00\x08\x13'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x02'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x14'
+    ),
+    ('integer overflow in array size',
+        b'\xaf\x03\xff\xff\xff\xff\xff\xff\xff\xff\x01\x00\x08\x13'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x02'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x14'
+    ),
+    ('too large reference index',
+        b'\xa1\x02\x00\x08\x0a'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x02'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0b'
+    ),
+    ('integer overflow in reference index',
+        b'\xa1\xff\xff\xff\xff\xff\xff\xff\xff\x00\x08\x11'
+        b'\x00\x00\x00\x00\x00\x00\x01\x08'
+        b'\x00\x00\x00\x00\x00\x00\x00\x02'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x12'
+    ),
+    ('too large bytes size',
+        b'\x4f\x00\x23\x41\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0c'
+    ),
+    ('extremally large bytes size (32-bit)',
+        b'\x4f\x02\x7f\xff\xff\xff\x41\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0f'
+    ),
+    ('extremally large bytes size (64-bit)',
+        b'\x4f\x03\x00\x00\x00\xff\xff\xff\xff\xff\x41\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x13'
+    ),
+    ('integer overflow in bytes size',
+        b'\x4f\x03\xff\xff\xff\xff\xff\xff\xff\xff\x41\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x13'
+    ),
+    ('too large ASCII size',
+        b'\x5f\x00\x23\x41\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0c'
+    ),
+    ('extremally large ASCII size (32-bit)',
+        b'\x5f\x02\x7f\xff\xff\xff\x41\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0f'
+    ),
+    ('extremally large ASCII size (64-bit)',
+        b'\x5f\x03\x00\x00\x00\xff\xff\xff\xff\xff\x41\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x13'
+    ),
+    ('integer overflow in ASCII size',
+        b'\x5f\x03\xff\xff\xff\xff\xff\xff\xff\xff\x41\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x13'
+    ),
+    ('invalid ASCII',
+        b'\x51\xff\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0a'
+    ),
+    ('too large UTF-16 size',
+        b'\x6f\x00\x13\x20\xac\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0e'
+    ),
+    ('extremally large UTF-16 size (32-bit)',
+        b'\x6f\x02\x4f\xff\xff\xff\x20\xac\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x11'
+    ),
+    ('extremally large UTF-16 size (64-bit)',
+        b'\x6f\x03\x00\x00\x00\xff\xff\xff\xff\xff\x20\xac\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x15'
+    ),
+    ('integer overflow in UTF-16 size',
+        b'\x6f\x03\xff\xff\xff\xff\xff\xff\xff\xff\x20\xac\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x15'
+    ),
+    ('invalid UTF-16',
+        b'\x61\xd8\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0b'
+    ),
+    ('non-hashable key',
+        b'\xd1\x01\x01\xa0\x08\x0b'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x02'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x0c'
+    ),
+    ('too large datetime (datetime overflow)',
+        b'\x33\x42\x50\x00\x00\x00\x00\x00\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x11'
+    ),
+    ('too large datetime (timedelta overflow)',
+        b'\x33\x42\xe0\x00\x00\x00\x00\x00\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x11'
+    ),
+    ('invalid datetime (Infinity)',
+        b'\x33\x7f\xf0\x00\x00\x00\x00\x00\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x11'
+    ),
+    ('invalid datetime (NaN)',
+        b'\x33\x7f\xf8\x00\x00\x00\x00\x00\x00\x08'
+        b'\x00\x00\x00\x00\x00\x00\x01\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x01'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00\x00\x00\x00\x11'
+    ),
+]
+
+
+class TestPlistlib(unittest.TestCase):
+
+    def tearDown(self):
+        try:
+            os.unlink(os_helper.TESTFN)
+        except:
+            pass
+
+    def _create(self, fmt=None):
+        pl = dict(
+            aString="Doodah",
+            aList=["A", "B", 12, 32.5, [1, 2, 3]],
+            aFloat = 0.5,
+            anInt = 728,
+            aBigInt = 2 ** 63 - 44,
+            aBigInt2 = 2 ** 63 + 44,
+            aNegativeInt = -5,
+            aNegativeBigInt = -80000000000,
+            aDict=dict(
+                anotherString="<hello & 'hi' there!>",
+                aUnicodeValue='M\xe4ssig, Ma\xdf',
+                aTrueValue=True,
+                aFalseValue=False,
+                deeperDict=dict(a=17, b=32.5, c=[1, 2, "text"]),
+            ),
+            someData = b"<binary gunk>",
+            someMoreData = b"<lots of binary gunk>\0\1\2\3" * 10,
+            nestedData = [b"<lots of binary gunk>\0\1\2\3" * 10],
+            aDate = datetime.datetime(2004, 10, 26, 10, 33, 33),
+            anEmptyDict = dict(),
+            anEmptyList = list()
+        )
+        pl['\xc5benraa'] = "That was a unicode key."
+        return pl
+
+    def test_create(self):
+        pl = self._create()
+        self.assertEqual(pl["aString"], "Doodah")
+        self.assertEqual(pl["aDict"]["aFalseValue"], False)
+
+    def test_io(self):
+        pl = self._create()
+        with open(os_helper.TESTFN, 'wb') as fp:
+            plistlib.dump(pl, fp)
+
+        with open(os_helper.TESTFN, 'rb') as fp:
+            pl2 = plistlib.load(fp)
+
+        self.assertEqual(dict(pl), dict(pl2))
+
+        self.assertRaises(AttributeError, plistlib.dump, pl, 'filename')
+        self.assertRaises(AttributeError, plistlib.load, 'filename')
+
+    def test_invalid_type(self):
+        pl = [ object() ]
+
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                self.assertRaises(TypeError, plistlib.dumps, pl, fmt=fmt)
+
+    def test_invalid_uid(self):
+        with self.assertRaises(TypeError):
+            UID("not an int")
+        with self.assertRaises(ValueError):
+            UID(2 ** 64)
+        with self.assertRaises(ValueError):
+            UID(-19)
+
+    def test_int(self):
+        for pl in [0, 2**8-1, 2**8, 2**16-1, 2**16, 2**32-1, 2**32,
+                   2**63-1, 2**64-1, 1, -2**63]:
+            for fmt in ALL_FORMATS:
+                with self.subTest(pl=pl, fmt=fmt):
+                    data = plistlib.dumps(pl, fmt=fmt)
+                    pl2 = plistlib.loads(data)
+                    self.assertIsInstance(pl2, int)
+                    self.assertEqual(pl, pl2)
+                    data2 = plistlib.dumps(pl2, fmt=fmt)
+                    self.assertEqual(data, data2)
+
+        for fmt in ALL_FORMATS:
+            for pl in (2 ** 64 + 1, 2 ** 127-1, -2**64, -2 ** 127):
+                with self.subTest(pl=pl, fmt=fmt):
+                    self.assertRaises(OverflowError, plistlib.dumps,
+                                      pl, fmt=fmt)
+
+    def test_bytearray(self):
+        for pl in (b'<binary gunk>', b"<lots of binary gunk>\0\1\2\3" * 10):
+            for fmt in ALL_FORMATS:
+                with self.subTest(pl=pl, fmt=fmt):
+                    data = plistlib.dumps(bytearray(pl), fmt=fmt)
+                    pl2 = plistlib.loads(data)
+                    self.assertIsInstance(pl2, bytes)
+                    self.assertEqual(pl2, pl)
+                    data2 = plistlib.dumps(pl2, fmt=fmt)
+                    self.assertEqual(data, data2)
+
+    def test_bytes(self):
+        pl = self._create()
+        data = plistlib.dumps(pl)
+        pl2 = plistlib.loads(data)
+        self.assertEqual(dict(pl), dict(pl2))
+        data2 = plistlib.dumps(pl2)
+        self.assertEqual(data, data2)
+
+    def test_indentation_array(self):
+        data = [[[[[[[[{'test': b'aaaaaa'}]]]]]]]]
+        self.assertEqual(plistlib.loads(plistlib.dumps(data)), data)
+
+    def test_indentation_dict(self):
+        data = {'1': {'2': {'3': {'4': {'5': {'6': {'7': {'8': {'9': b'aaaaaa'}}}}}}}}}
+        self.assertEqual(plistlib.loads(plistlib.dumps(data)), data)
+
+    def test_indentation_dict_mix(self):
+        data = {'1': {'2': [{'3': [[[[[{'test': b'aaaaaa'}]]]]]}]}}
+        self.assertEqual(plistlib.loads(plistlib.dumps(data)), data)
+
+    def test_uid(self):
+        data = UID(1)
+        self.assertEqual(plistlib.loads(plistlib.dumps(data, fmt=plistlib.FMT_BINARY)), data)
+        dict_data = {
+            'uid0': UID(0),
+            'uid2': UID(2),
+            'uid8': UID(2 ** 8),
+            'uid16': UID(2 ** 16),
+            'uid32': UID(2 ** 32),
+            'uid63': UID(2 ** 63)
+        }
+        self.assertEqual(plistlib.loads(plistlib.dumps(dict_data, fmt=plistlib.FMT_BINARY)), dict_data)
+
+    def test_uid_data(self):
+        uid = UID(1)
+        self.assertEqual(uid.data, 1)
+
+    def test_uid_eq(self):
+        self.assertEqual(UID(1), UID(1))
+        self.assertNotEqual(UID(1), UID(2))
+        self.assertNotEqual(UID(1), "not uid")
+
+    def test_uid_hash(self):
+        self.assertEqual(hash(UID(1)), hash(UID(1)))
+
+    def test_uid_repr(self):
+        self.assertEqual(repr(UID(1)), "UID(1)")
+
+    def test_uid_index(self):
+        self.assertEqual(operator.index(UID(1)), 1)
+
+    def test_uid_pickle(self):
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            self.assertEqual(pickle.loads(pickle.dumps(UID(19), protocol=proto)), UID(19))
+
+    def test_uid_copy(self):
+        self.assertEqual(copy.copy(UID(1)), UID(1))
+        self.assertEqual(copy.deepcopy(UID(1)), UID(1))
+
+    def test_appleformatting(self):
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                pl = plistlib.loads(TESTDATA[fmt])
+                data = plistlib.dumps(pl, fmt=fmt)
+                self.assertEqual(data, TESTDATA[fmt],
+                    "generated data was not identical to Apple's output")
+
+
+    def test_appleformattingfromliteral(self):
+        self.maxDiff = None
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                pl = self._create(fmt=fmt)
+                pl2 = plistlib.loads(TESTDATA[fmt], fmt=fmt)
+                self.assertEqual(dict(pl), dict(pl2),
+                    "generated data was not identical to Apple's output")
+                pl2 = plistlib.loads(TESTDATA[fmt])
+                self.assertEqual(dict(pl), dict(pl2),
+                    "generated data was not identical to Apple's output")
+
+    def test_bytesio(self):
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                b = BytesIO()
+                pl = self._create(fmt=fmt)
+                plistlib.dump(pl, b, fmt=fmt)
+                pl2 = plistlib.load(BytesIO(b.getvalue()), fmt=fmt)
+                self.assertEqual(dict(pl), dict(pl2))
+                pl2 = plistlib.load(BytesIO(b.getvalue()))
+                self.assertEqual(dict(pl), dict(pl2))
+
+    def test_keysort_bytesio(self):
+        pl = collections.OrderedDict()
+        pl['b'] = 1
+        pl['a'] = 2
+        pl['c'] = 3
+
+        for fmt in ALL_FORMATS:
+            for sort_keys in (False, True):
+                with self.subTest(fmt=fmt, sort_keys=sort_keys):
+                    b = BytesIO()
+
+                    plistlib.dump(pl, b, fmt=fmt, sort_keys=sort_keys)
+                    pl2 = plistlib.load(BytesIO(b.getvalue()),
+                        dict_type=collections.OrderedDict)
+
+                    self.assertEqual(dict(pl), dict(pl2))
+                    if sort_keys:
+                        self.assertEqual(list(pl2.keys()), ['a', 'b', 'c'])
+                    else:
+                        self.assertEqual(list(pl2.keys()), ['b', 'a', 'c'])
+
+    def test_keysort(self):
+        pl = collections.OrderedDict()
+        pl['b'] = 1
+        pl['a'] = 2
+        pl['c'] = 3
+
+        for fmt in ALL_FORMATS:
+            for sort_keys in (False, True):
+                with self.subTest(fmt=fmt, sort_keys=sort_keys):
+                    data = plistlib.dumps(pl, fmt=fmt, sort_keys=sort_keys)
+                    pl2 = plistlib.loads(data, dict_type=collections.OrderedDict)
+
+                    self.assertEqual(dict(pl), dict(pl2))
+                    if sort_keys:
+                        self.assertEqual(list(pl2.keys()), ['a', 'b', 'c'])
+                    else:
+                        self.assertEqual(list(pl2.keys()), ['b', 'a', 'c'])
+
+    def test_keys_no_string(self):
+        pl = { 42: 'aNumber' }
+
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                self.assertRaises(TypeError, plistlib.dumps, pl, fmt=fmt)
+
+                b = BytesIO()
+                self.assertRaises(TypeError, plistlib.dump, pl, b, fmt=fmt)
+
+    def test_skipkeys(self):
+        pl = {
+            42: 'aNumber',
+            'snake': 'aWord',
+        }
+
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                data = plistlib.dumps(
+                    pl, fmt=fmt, skipkeys=True, sort_keys=False)
+
+                pl2 = plistlib.loads(data)
+                self.assertEqual(pl2, {'snake': 'aWord'})
+
+                fp = BytesIO()
+                plistlib.dump(
+                    pl, fp, fmt=fmt, skipkeys=True, sort_keys=False)
+                data = fp.getvalue()
+                pl2 = plistlib.loads(fp.getvalue())
+                self.assertEqual(pl2, {'snake': 'aWord'})
+
+    def test_tuple_members(self):
+        pl = {
+            'first': (1, 2),
+            'second': (1, 2),
+            'third': (3, 4),
+        }
+
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                data = plistlib.dumps(pl, fmt=fmt)
+                pl2 = plistlib.loads(data)
+                self.assertEqual(pl2, {
+                    'first': [1, 2],
+                    'second': [1, 2],
+                    'third': [3, 4],
+                })
+                if fmt != plistlib.FMT_BINARY:
+                    self.assertIsNot(pl2['first'], pl2['second'])
+
+    def test_list_members(self):
+        pl = {
+            'first': [1, 2],
+            'second': [1, 2],
+            'third': [3, 4],
+        }
+
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                data = plistlib.dumps(pl, fmt=fmt)
+                pl2 = plistlib.loads(data)
+                self.assertEqual(pl2, {
+                    'first': [1, 2],
+                    'second': [1, 2],
+                    'third': [3, 4],
+                })
+                self.assertIsNot(pl2['first'], pl2['second'])
+
+    def test_dict_members(self):
+        pl = {
+            'first': {'a': 1},
+            'second': {'a': 1},
+            'third': {'b': 2 },
+        }
+
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                data = plistlib.dumps(pl, fmt=fmt)
+                pl2 = plistlib.loads(data)
+                self.assertEqual(pl2, {
+                    'first': {'a': 1},
+                    'second': {'a': 1},
+                    'third': {'b': 2 },
+                })
+                self.assertIsNot(pl2['first'], pl2['second'])
+
+    def test_controlcharacters(self):
+        for i in range(128):
+            c = chr(i)
+            testString = "string containing %s" % c
+            if i >= 32 or c in "\r\n\t":
+                # \r, \n and \t are the only legal control chars in XML
+                data = plistlib.dumps(testString, fmt=plistlib.FMT_XML)
+                if c != "\r":
+                    self.assertEqual(plistlib.loads(data), testString)
+            else:
+                with self.assertRaises(ValueError):
+                    plistlib.dumps(testString, fmt=plistlib.FMT_XML)
+            plistlib.dumps(testString, fmt=plistlib.FMT_BINARY)
+
+    def test_non_bmp_characters(self):
+        pl = {'python': '\U0001f40d'}
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                data = plistlib.dumps(pl, fmt=fmt)
+                self.assertEqual(plistlib.loads(data), pl)
+
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
+    def test_lone_surrogates(self):
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                with self.assertRaises(UnicodeEncodeError):
+                    plistlib.dumps('\ud8ff', fmt=fmt)
+                with self.assertRaises(UnicodeEncodeError):
+                    plistlib.dumps('\udcff', fmt=fmt)
+
+    def test_nondictroot(self):
+        for fmt in ALL_FORMATS:
+            with self.subTest(fmt=fmt):
+                test1 = "abc"
+                test2 = [1, 2, 3, "abc"]
+                result1 = plistlib.loads(plistlib.dumps(test1, fmt=fmt))
+                result2 = plistlib.loads(plistlib.dumps(test2, fmt=fmt))
+                self.assertEqual(test1, result1)
+                self.assertEqual(test2, result2)
+
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
+    def test_invalidarray(self):
+        for i in ["<key>key inside an array</key>",
+                  "<key>key inside an array2</key><real>3</real>",
+                  "<true/><key>key inside an array3</key>"]:
+            self.assertRaises(ValueError, plistlib.loads,
+                              ("<plist><array>%s</array></plist>"%i).encode())
+
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
+    def test_invaliddict(self):
+        for i in ["<key><true/>k</key><string>compound key</string>",
+                  "<key>single key</key>",
+                  "<string>missing key</string>",
+                  "<key>k1</key><string>v1</string><real>5.3</real>"
+                  "<key>k1</key><key>k2</key><string>double key</string>"]:
+            self.assertRaises(ValueError, plistlib.loads,
+                              ("<plist><dict>%s</dict></plist>"%i).encode())
+            self.assertRaises(ValueError, plistlib.loads,
+                              ("<plist><array><dict>%s</dict></array></plist>"%i).encode())
+
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
+    def test_invalidinteger(self):
+        self.assertRaises(ValueError, plistlib.loads,
+                          b"<plist><integer>not integer</integer></plist>")
+
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
+    def test_invalidreal(self):
+        self.assertRaises(ValueError, plistlib.loads,
+                          b"<plist><integer>not real</integer></plist>")
+
+    def test_integer_notations(self):
+        pl = b"<plist><integer>456</integer></plist>"
+        value = plistlib.loads(pl)
+        self.assertEqual(value, 456)
+
+        pl = b"<plist><integer>0xa</integer></plist>"
+        value = plistlib.loads(pl)
+        self.assertEqual(value, 10)
+
+        pl = b"<plist><integer>0123</integer></plist>"
+        value = plistlib.loads(pl)
+        self.assertEqual(value, 123)
+
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
+    def test_xml_encodings(self):
+        base = TESTDATA[plistlib.FMT_XML]
+
+        for xml_encoding, encoding, bom in [
+                    (b'utf-8', 'utf-8', codecs.BOM_UTF8),
+                    (b'utf-16', 'utf-16-le', codecs.BOM_UTF16_LE),
+                    (b'utf-16', 'utf-16-be', codecs.BOM_UTF16_BE),
+                    # Expat does not support UTF-32
+                    #(b'utf-32', 'utf-32-le', codecs.BOM_UTF32_LE),
+                    #(b'utf-32', 'utf-32-be', codecs.BOM_UTF32_BE),
+                ]:
+
+            pl = self._create(fmt=plistlib.FMT_XML)
+            with self.subTest(encoding=encoding):
+                data = base.replace(b'UTF-8', xml_encoding)
+                data = bom + data.decode('utf-8').encode(encoding)
+                pl2 = plistlib.loads(data)
+                self.assertEqual(dict(pl), dict(pl2))
+
+    def test_dump_invalid_format(self):
+        with self.assertRaises(ValueError):
+            plistlib.dumps({}, fmt="blah")
+
+    def test_load_invalid_file(self):
+        with self.assertRaises(plistlib.InvalidFileException):
+            plistlib.loads(b"these are not plist file contents")
+
+    def test_modified_uid_negative(self):
+        neg_uid = UID(1)
+        neg_uid.data = -1  # dodge the negative check in the constructor
+        with self.assertRaises(ValueError):
+            plistlib.dumps(neg_uid, fmt=plistlib.FMT_BINARY)
+
+    def test_modified_uid_huge(self):
+        huge_uid = UID(1)
+        huge_uid.data = 2 ** 64  # dodge the size check in the constructor
+        with self.assertRaises(OverflowError):
+            plistlib.dumps(huge_uid, fmt=plistlib.FMT_BINARY)
+
+    # TODO: RUSTPYTHON
+    @unittest.expectedFailure
+    def test_xml_plist_with_entity_decl(self):
+        with self.assertRaisesRegex(plistlib.InvalidFileException,
+                                    "XML entity declarations are not supported"):
+            plistlib.loads(XML_PLIST_WITH_ENTITY, fmt=plistlib.FMT_XML)
+
+
+class TestBinaryPlistlib(unittest.TestCase):
+
+    @staticmethod
+    def decode(*objects, offset_size=1, ref_size=1):
+        data = [b'bplist00']
+        offset = 8
+        offsets = []
+        for x in objects:
+            offsets.append(offset.to_bytes(offset_size, 'big'))
+            data.append(x)
+            offset += len(x)
+        tail = struct.pack('>6xBBQQQ', offset_size, ref_size,
+                           len(objects), 0, offset)
+        data.extend(offsets)
+        data.append(tail)
+        return plistlib.loads(b''.join(data), fmt=plistlib.FMT_BINARY)
+
+    def test_nonstandard_refs_size(self):
+        # Issue #21538: Refs and offsets are 24-bit integers
+        data = (b'bplist00'
+                b'\xd1\x00\x00\x01\x00\x00\x02QaQb'
+                b'\x00\x00\x08\x00\x00\x0f\x00\x00\x11'
+                b'\x00\x00\x00\x00\x00\x00'
+                b'\x03\x03'
+                b'\x00\x00\x00\x00\x00\x00\x00\x03'
+                b'\x00\x00\x00\x00\x00\x00\x00\x00'
+                b'\x00\x00\x00\x00\x00\x00\x00\x13')
+        self.assertEqual(plistlib.loads(data), {'a': 'b'})
+
+    def test_dump_duplicates(self):
+        # Test effectiveness of saving duplicated objects
+        for x in (None, False, True, 12345, 123.45, 'abcde', 'абвгд', b'abcde',
+                  datetime.datetime(2004, 10, 26, 10, 33, 33),
+                  bytearray(b'abcde'), [12, 345], (12, 345), {'12': 345}):
+            with self.subTest(x=x):
+                data = plistlib.dumps([x]*1000, fmt=plistlib.FMT_BINARY)
+                self.assertLess(len(data), 1100, repr(data))
+
+    def test_identity(self):
+        for x in (None, False, True, 12345, 123.45, 'abcde', b'abcde',
+                  datetime.datetime(2004, 10, 26, 10, 33, 33),
+                  bytearray(b'abcde'), [12, 345], (12, 345), {'12': 345}):
+            with self.subTest(x=x):
+                data = plistlib.dumps([x]*2, fmt=plistlib.FMT_BINARY)
+                a, b = plistlib.loads(data)
+                if isinstance(x, tuple):
+                    x = list(x)
+                self.assertEqual(a, x)
+                self.assertEqual(b, x)
+                self.assertIs(a, b)
+
+    def test_cycles(self):
+        # recursive list
+        a = []
+        a.append(a)
+        b = plistlib.loads(plistlib.dumps(a, fmt=plistlib.FMT_BINARY))
+        self.assertIs(b[0], b)
+        # recursive tuple
+        a = ([],)
+        a[0].append(a)
+        b = plistlib.loads(plistlib.dumps(a, fmt=plistlib.FMT_BINARY))
+        self.assertIs(b[0][0], b)
+        # recursive dict
+        a = {}
+        a['x'] = a
+        b = plistlib.loads(plistlib.dumps(a, fmt=plistlib.FMT_BINARY))
+        self.assertIs(b['x'], b)
+
+    def test_deep_nesting(self):
+        for N in [300, 100000]:
+            chunks = [b'\xa1' + (i + 1).to_bytes(4, 'big') for i in range(N)]
+            try:
+                result = self.decode(*chunks, b'\x54seed', offset_size=4, ref_size=4)
+            except RecursionError:
+                pass
+            else:
+                for i in range(N):
+                    self.assertIsInstance(result, list)
+                    self.assertEqual(len(result), 1)
+                    result = result[0]
+                self.assertEqual(result, 'seed')
+
+    def test_large_timestamp(self):
+        # Issue #26709: 32-bit timestamp out of range
+        for ts in -2**31-1, 2**31:
+            with self.subTest(ts=ts):
+                d = (datetime.datetime.utcfromtimestamp(0) +
+                     datetime.timedelta(seconds=ts))
+                data = plistlib.dumps(d, fmt=plistlib.FMT_BINARY)
+                self.assertEqual(plistlib.loads(data), d)
+
+    def test_load_singletons(self):
+        self.assertIs(self.decode(b'\x00'), None)
+        self.assertIs(self.decode(b'\x08'), False)
+        self.assertIs(self.decode(b'\x09'), True)
+        self.assertEqual(self.decode(b'\x0f'), b'')
+
+    def test_load_int(self):
+        self.assertEqual(self.decode(b'\x10\x00'), 0)
+        self.assertEqual(self.decode(b'\x10\xfe'), 0xfe)
+        self.assertEqual(self.decode(b'\x11\xfe\xdc'), 0xfedc)
+        self.assertEqual(self.decode(b'\x12\xfe\xdc\xba\x98'), 0xfedcba98)
+        self.assertEqual(self.decode(b'\x13\x01\x23\x45\x67\x89\xab\xcd\xef'),
+                         0x0123456789abcdef)
+        self.assertEqual(self.decode(b'\x13\xfe\xdc\xba\x98\x76\x54\x32\x10'),
+                         -0x123456789abcdf0)
+
+    def test_unsupported(self):
+        unsupported = [*range(1, 8), *range(10, 15),
+                       0x20, 0x21, *range(0x24, 0x33), *range(0x34, 0x40)]
+        for i in [0x70, 0x90, 0xb0, 0xc0, 0xe0, 0xf0]:
+            unsupported.extend(i + j for j in range(16))
+        for token in unsupported:
+            with self.subTest(f'token {token:02x}'):
+                with self.assertRaises(plistlib.InvalidFileException):
+                    self.decode(bytes([token]) + b'\x00'*16)
+
+    def test_invalid_binary(self):
+        for name, data in INVALID_BINARY_PLISTS:
+            with self.subTest(name):
+                with self.assertRaises(plistlib.InvalidFileException):
+                    plistlib.loads(b'bplist00' + data, fmt=plistlib.FMT_BINARY)
+
+
+class TestKeyedArchive(unittest.TestCase):
+    def test_keyed_archive_data(self):
+        # This is the structure of a NSKeyedArchive packed plist
+        data = {
+            '$version': 100000,
+            '$objects': [
+                '$null', {
+                    'pytype': 1,
+                    '$class': UID(2),
+                    'NS.string': 'KeyArchive UID Test'
+                },
+                {
+                    '$classname': 'OC_BuiltinPythonUnicode',
+                    '$classes': [
+                        'OC_BuiltinPythonUnicode',
+                        'OC_PythonUnicode',
+                        'NSString',
+                        'NSObject'
+                    ],
+                    '$classhints': [
+                        'OC_PythonString', 'NSString'
+                    ]
+                }
+            ],
+            '$archiver': 'NSKeyedArchiver',
+            '$top': {
+                'root': UID(1)
+            }
+        }
+        self.assertEqual(plistlib.loads(TESTDATA["KEYED_ARCHIVE"]), data)
+
+
+class MiscTestCase(unittest.TestCase):
+    def test__all__(self):
+        not_exported = {"PlistFormat", "PLISTHEADER"}
+        support.check__all__(self, plistlib, not_exported=not_exported)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/stdlib/src/binascii.rs b/stdlib/src/binascii.rs
index 3fa664262..87ac684d5 100644
--- a/stdlib/src/binascii.rs
+++ b/stdlib/src/binascii.rs
@@ -145,19 +145,44 @@ mod decl {
 
     #[pyfunction]
     fn a2b_base64(s: ArgAsciiBuffer, vm: &VirtualMachine) -> PyResult<Vec<u8>> {
+        #[rustfmt::skip]
+        const BASE64_TABLE: [i8; 256] = [
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63,
+            52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1, 0,-1,-1, /* Note PAD->0 */
+            -1, 0, 1, 2,  3, 4, 5, 6,  7, 8, 9,10, 11,12,13,14,
+            15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1,
+            -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,
+            41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1,
+
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+            -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+        ];
+
         s.with_ref(|b| {
-            let mut buf;
-            let b = if memchr::memchr(b'\n', b).is_some() {
-                buf = b.to_vec();
-                buf.retain(|c| *c != b'\n');
-                &buf
+            let decoded = if b.len() % 4 == 0 {
+                base64::decode(b)
             } else {
-                b
+                Err(base64::DecodeError::InvalidLength)
             };
-            if b.len() % 4 != 0 {
-                return Err(base64::DecodeError::InvalidLength);
-            }
-            base64::decode(b)
+            decoded.or_else(|_| {
+                let buf: Vec<_> = b
+                    .iter()
+                    .copied()
+                    .filter(|&c| BASE64_TABLE[c as usize] != -1)
+                    .collect();
+                if buf.len() % 4 != 0 {
+                    return Err(base64::DecodeError::InvalidLength);
+                }
+                base64::decode(&buf)
+            })
         })
         .map_err(|err| new_binascii_error(format!("error decoding base64: {}", err), vm))
     }