diff tests/test-cbor.py @ 43076:2372284d9457

formatting: blacken the codebase This is using my patch to black (https://github.com/psf/black/pull/826) so we don't un-wrap collection literals. Done with: hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**"' | xargs black -S # skip-blame mass-reformatting only # no-check-commit reformats foo_bar functions Differential Revision: https://phab.mercurial-scm.org/D6971
author Augie Fackler <augie@google.com>
date Sun, 06 Oct 2019 09:45:02 -0400
parents 1ea1bba1c5be
children 6dbb18e1ac8d
line wrap: on
line diff
--- a/tests/test-cbor.py	Sat Oct 05 10:29:34 2019 -0400
+++ b/tests/test-cbor.py	Sun Oct 06 09:45:02 2019 -0400
@@ -5,44 +5,46 @@
 import unittest
 
 # TODO migrate to canned cbor test strings and stop using thirdparty.cbor
-tpp = os.path.normpath(os.path.join(os.path.dirname(__file__),
-                                    '..', 'mercurial', 'thirdparty'))
+tpp = os.path.normpath(
+    os.path.join(os.path.dirname(__file__), '..', 'mercurial', 'thirdparty')
+)
 if not os.path.exists(tpp):
     # skip, not in a repo
     sys.exit(80)
 sys.path[0:0] = [tpp]
 import cbor
+
 del sys.path[0]
 
-from mercurial.utils import (
-    cborutil,
-)
+from mercurial.utils import cborutil
+
 
 class TestCase(unittest.TestCase):
     if not getattr(unittest.TestCase, 'assertRaisesRegex', False):
         # Python 3.7 deprecates the regex*p* version, but 2.7 lacks
         # the regex version.
-        assertRaisesRegex = (# camelcase-required
-            unittest.TestCase.assertRaisesRegexp)
+        assertRaisesRegex = (  # camelcase-required
+            unittest.TestCase.assertRaisesRegexp
+        )
+
 
 def loadit(it):
     return cbor.loads(b''.join(it))
 
+
 class BytestringTests(TestCase):
     def testsimple(self):
         self.assertEqual(
-            list(cborutil.streamencode(b'foobar')),
-            [b'\x46', b'foobar'])
+            list(cborutil.streamencode(b'foobar')), [b'\x46', b'foobar']
+        )
+
+        self.assertEqual(loadit(cborutil.streamencode(b'foobar')), b'foobar')
+
+        self.assertEqual(cborutil.decodeall(b'\x46foobar'), [b'foobar'])
 
         self.assertEqual(
-            loadit(cborutil.streamencode(b'foobar')),
-            b'foobar')
-
-        self.assertEqual(cborutil.decodeall(b'\x46foobar'),
-                         [b'foobar'])
-
-        self.assertEqual(cborutil.decodeall(b'\x46foobar\x45fizbi'),
-                         [b'foobar', b'fizbi'])
+            cborutil.decodeall(b'\x46foobar\x45fizbi'), [b'foobar', b'fizbi']
+        )
 
     def testlong(self):
         source = b'x' * 1048576
@@ -65,19 +67,26 @@
                 b'\x43',
                 b'\xee\xff\x99',
                 b'\xff',
-            ])
+            ],
+        )
 
         self.assertEqual(
             loadit(cborutil.streamencodebytestringfromiter(source)),
-            b''.join(source))
+            b''.join(source),
+        )
 
-        self.assertEqual(cborutil.decodeall(b'\x5f\x44\xaa\xbb\xcc\xdd'
-                                            b'\x43\xee\xff\x99\xff'),
-                         [b'\xaa\xbb\xcc\xdd', b'\xee\xff\x99', b''])
+        self.assertEqual(
+            cborutil.decodeall(
+                b'\x5f\x44\xaa\xbb\xcc\xdd' b'\x43\xee\xff\x99\xff'
+            ),
+            [b'\xaa\xbb\xcc\xdd', b'\xee\xff\x99', b''],
+        )
 
         for i, chunk in enumerate(
-            cborutil.decodeall(b'\x5f\x44\xaa\xbb\xcc\xdd'
-                               b'\x43\xee\xff\x99\xff')):
+            cborutil.decodeall(
+                b'\x5f\x44\xaa\xbb\xcc\xdd' b'\x43\xee\xff\x99\xff'
+            )
+        ):
             self.assertIsInstance(chunk, cborutil.bytestringchunk)
 
             if i == 0:
@@ -95,7 +104,8 @@
 
         self.assertEqual(
             loadit(cborutil.streamencodebytestringfromiter(source)),
-            b''.join(source))
+            b''.join(source),
+        )
 
     def testindefinite(self):
         source = b'\x00\x01\x02\x03' + b'\xff' * 16384
@@ -110,8 +120,9 @@
         self.assertEqual(next(it), b'\x42')
         self.assertEqual(next(it), b'\xff\xff')
 
-        dest = b''.join(cborutil.streamencodeindefinitebytestring(
-            source, chunksize=42))
+        dest = b''.join(
+            cborutil.streamencodeindefinitebytestring(source, chunksize=42)
+        )
         self.assertEqual(cbor.loads(dest), source)
 
         self.assertEqual(b''.join(cborutil.decodeall(dest)), source)
@@ -140,27 +151,42 @@
             elif len(source) < 1048576:
                 hlen = 5
 
-            self.assertEqual(cborutil.decodeitem(encoded),
-                             (True, source, hlen + len(source),
-                              cborutil.SPECIAL_NONE))
+            self.assertEqual(
+                cborutil.decodeitem(encoded),
+                (True, source, hlen + len(source), cborutil.SPECIAL_NONE),
+            )
 
     def testpartialdecode(self):
         encoded = b''.join(cborutil.streamencode(b'foobar'))
 
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -6, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -5, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (False, None, -4, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (False, None, -3, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:5]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:6]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:7]),
-                         (True, b'foobar', 7, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -6, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -5, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (False, None, -4, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (False, None, -3, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:5]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:6]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:7]),
+            (True, b'foobar', 7, cborutil.SPECIAL_NONE),
+        )
 
     def testpartialdecodevariouslengths(self):
         lens = [
@@ -192,11 +218,11 @@
         for size in lens:
             if size < 24:
                 hlen = 1
-            elif size < 2**8:
+            elif size < 2 ** 8:
                 hlen = 2
-            elif size < 2**16:
+            elif size < 2 ** 16:
                 hlen = 3
-            elif size < 2**32:
+            elif size < 2 ** 32:
                 hlen = 5
             else:
                 assert False
@@ -207,107 +233,158 @@
             res = cborutil.decodeitem(encoded[0:1])
 
             if hlen > 1:
-                self.assertEqual(res, (False, None, -(hlen - 1),
-                                       cborutil.SPECIAL_NONE))
+                self.assertEqual(
+                    res, (False, None, -(hlen - 1), cborutil.SPECIAL_NONE)
+                )
             else:
-                self.assertEqual(res, (False, None, -(size + hlen - 1),
-                                       cborutil.SPECIAL_NONE))
+                self.assertEqual(
+                    res,
+                    (False, None, -(size + hlen - 1), cborutil.SPECIAL_NONE),
+                )
 
             # Decoding partial header reports remaining header size.
             for i in range(hlen - 1):
-                self.assertEqual(cborutil.decodeitem(encoded[0:i + 1]),
-                                 (False, None, -(hlen - i - 1),
-                                  cborutil.SPECIAL_NONE))
+                self.assertEqual(
+                    cborutil.decodeitem(encoded[0 : i + 1]),
+                    (False, None, -(hlen - i - 1), cborutil.SPECIAL_NONE),
+                )
 
             # Decoding complete header reports item size.
-            self.assertEqual(cborutil.decodeitem(encoded[0:hlen]),
-                             (False, None, -size, cborutil.SPECIAL_NONE))
+            self.assertEqual(
+                cborutil.decodeitem(encoded[0:hlen]),
+                (False, None, -size, cborutil.SPECIAL_NONE),
+            )
 
             # Decoding single byte after header reports item size - 1
-            self.assertEqual(cborutil.decodeitem(encoded[0:hlen + 1]),
-                             (False, None, -(size - 1), cborutil.SPECIAL_NONE))
+            self.assertEqual(
+                cborutil.decodeitem(encoded[0 : hlen + 1]),
+                (False, None, -(size - 1), cborutil.SPECIAL_NONE),
+            )
 
             # Decoding all but the last byte reports -1 needed.
-            self.assertEqual(cborutil.decodeitem(encoded[0:hlen + size - 1]),
-                             (False, None, -1, cborutil.SPECIAL_NONE))
+            self.assertEqual(
+                cborutil.decodeitem(encoded[0 : hlen + size - 1]),
+                (False, None, -1, cborutil.SPECIAL_NONE),
+            )
 
             # Decoding last byte retrieves value.
-            self.assertEqual(cborutil.decodeitem(encoded[0:hlen + size]),
-                             (True, source, hlen + size, cborutil.SPECIAL_NONE))
+            self.assertEqual(
+                cborutil.decodeitem(encoded[0 : hlen + size]),
+                (True, source, hlen + size, cborutil.SPECIAL_NONE),
+            )
 
     def testindefinitepartialdecode(self):
-        encoded = b''.join(cborutil.streamencodebytestringfromiter(
-            [b'foobar', b'biz']))
+        encoded = b''.join(
+            cborutil.streamencodebytestringfromiter([b'foobar', b'biz'])
+        )
 
         # First item should be begin of bytestring special.
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (True, None, 1,
-                          cborutil.SPECIAL_START_INDEFINITE_BYTESTRING))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (True, None, 1, cborutil.SPECIAL_START_INDEFINITE_BYTESTRING),
+        )
 
         # Second item should be the first chunk. But only available when
         # we give it 7 bytes (1 byte header + 6 byte chunk).
-        self.assertEqual(cborutil.decodeitem(encoded[1:2]),
-                         (False, None, -6, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[1:3]),
-                         (False, None, -5, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[1:4]),
-                         (False, None, -4, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[1:5]),
-                         (False, None, -3, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[1:6]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[1:7]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[1:2]),
+            (False, None, -6, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[1:3]),
+            (False, None, -5, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[1:4]),
+            (False, None, -4, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[1:5]),
+            (False, None, -3, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[1:6]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[1:7]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
 
-        self.assertEqual(cborutil.decodeitem(encoded[1:8]),
-                         (True, b'foobar', 7, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[1:8]),
+            (True, b'foobar', 7, cborutil.SPECIAL_NONE),
+        )
 
         # Third item should be second chunk. But only available when
         # we give it 4 bytes (1 byte header + 3 byte chunk).
-        self.assertEqual(cborutil.decodeitem(encoded[8:9]),
-                         (False, None, -3, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[8:10]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[8:11]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[8:9]),
+            (False, None, -3, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[8:10]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[8:11]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
 
-        self.assertEqual(cborutil.decodeitem(encoded[8:12]),
-                         (True, b'biz', 4, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[8:12]),
+            (True, b'biz', 4, cborutil.SPECIAL_NONE),
+        )
 
         # Fourth item should be end of indefinite stream marker.
-        self.assertEqual(cborutil.decodeitem(encoded[12:13]),
-                         (True, None, 1, cborutil.SPECIAL_INDEFINITE_BREAK))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[12:13]),
+            (True, None, 1, cborutil.SPECIAL_INDEFINITE_BREAK),
+        )
 
         # Now test the behavior when going through the decoder.
 
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:1]),
-                         (False, 1, 0))
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:2]),
-                         (False, 1, 6))
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:3]),
-                         (False, 1, 5))
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:4]),
-                         (False, 1, 4))
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:5]),
-                         (False, 1, 3))
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:6]),
-                         (False, 1, 2))
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:7]),
-                         (False, 1, 1))
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:8]),
-                         (True, 8, 0))
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:1]), (False, 1, 0)
+        )
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:2]), (False, 1, 6)
+        )
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:3]), (False, 1, 5)
+        )
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:4]), (False, 1, 4)
+        )
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:5]), (False, 1, 3)
+        )
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:6]), (False, 1, 2)
+        )
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:7]), (False, 1, 1)
+        )
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:8]), (True, 8, 0)
+        )
 
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:9]),
-                         (True, 8, 3))
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:10]),
-                         (True, 8, 2))
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:11]),
-                         (True, 8, 1))
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:12]),
-                         (True, 12, 0))
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:9]), (True, 8, 3)
+        )
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:10]), (True, 8, 2)
+        )
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:11]), (True, 8, 1)
+        )
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:12]), (True, 12, 0)
+        )
 
-        self.assertEqual(cborutil.sansiodecoder().decode(encoded[0:13]),
-                         (True, 13, 0))
+        self.assertEqual(
+            cborutil.sansiodecoder().decode(encoded[0:13]), (True, 13, 0)
+        )
 
         decoder = cborutil.sansiodecoder()
         decoder.decode(encoded[0:8])
@@ -316,27 +393,28 @@
         self.assertTrue(values[0].isfirst)
         self.assertFalse(values[0].islast)
 
-        self.assertEqual(decoder.decode(encoded[8:12]),
-                         (True, 4, 0))
+        self.assertEqual(decoder.decode(encoded[8:12]), (True, 4, 0))
         values = decoder.getavailable()
         self.assertEqual(values, [b'biz'])
         self.assertFalse(values[0].isfirst)
         self.assertFalse(values[0].islast)
 
-        self.assertEqual(decoder.decode(encoded[12:]),
-                         (True, 1, 0))
+        self.assertEqual(decoder.decode(encoded[12:]), (True, 1, 0))
         values = decoder.getavailable()
         self.assertEqual(values, [b''])
         self.assertFalse(values[0].isfirst)
         self.assertTrue(values[0].islast)
 
+
 class StringTests(TestCase):
     def testdecodeforbidden(self):
         encoded = b'\x63foo'
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'string major type not supported'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError, 'string major type not supported'
+        ):
             cborutil.decodeall(encoded)
 
+
 class IntTests(TestCase):
     def testsmall(self):
         self.assertEqual(list(cborutil.streamencode(0)), [b'\x00'])
@@ -355,8 +433,9 @@
         self.assertEqual(cborutil.decodeall(b'\x04'), [4])
 
         # Multiple value decode works.
-        self.assertEqual(cborutil.decodeall(b'\x00\x01\x02\x03\x04'),
-                         [0, 1, 2, 3, 4])
+        self.assertEqual(
+            cborutil.decodeall(b'\x00\x01\x02\x03\x04'), [0, 1, 2, 3, 4]
+        )
 
     def testnegativesmall(self):
         self.assertEqual(list(cborutil.streamencode(-1)), [b'\x20'])
@@ -375,8 +454,9 @@
         self.assertEqual(cborutil.decodeall(b'\x24'), [-5])
 
         # Multiple value decode works.
-        self.assertEqual(cborutil.decodeall(b'\x20\x21\x22\x23\x24'),
-                         [-1, -2, -3, -4, -5])
+        self.assertEqual(
+            cborutil.decodeall(b'\x20\x21\x22\x23\x24'), [-1, -2, -3, -4, -5]
+        )
 
     def testrange(self):
         for i in range(-70000, 70000, 10):
@@ -388,117 +468,196 @@
     def testdecodepartialubyte(self):
         encoded = b''.join(cborutil.streamencode(250))
 
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (True, 250, 2, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (True, 250, 2, cborutil.SPECIAL_NONE),
+        )
 
     def testdecodepartialbyte(self):
         encoded = b''.join(cborutil.streamencode(-42))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (True, -42, 2, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (True, -42, 2, cborutil.SPECIAL_NONE),
+        )
 
     def testdecodepartialushort(self):
-        encoded = b''.join(cborutil.streamencode(2**15))
+        encoded = b''.join(cborutil.streamencode(2 ** 15))
 
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:5]),
-                         (True, 2**15, 3, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:5]),
+            (True, 2 ** 15, 3, cborutil.SPECIAL_NONE),
+        )
 
     def testdecodepartialshort(self):
         encoded = b''.join(cborutil.streamencode(-1024))
 
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (True, -1024, 3, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (True, -1024, 3, cborutil.SPECIAL_NONE),
+        )
 
     def testdecodepartialulong(self):
-        encoded = b''.join(cborutil.streamencode(2**28))
+        encoded = b''.join(cborutil.streamencode(2 ** 28))
 
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -4, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -3, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:5]),
-                         (True, 2**28, 5, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -4, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -3, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:5]),
+            (True, 2 ** 28, 5, cborutil.SPECIAL_NONE),
+        )
 
     def testdecodepartiallong(self):
         encoded = b''.join(cborutil.streamencode(-1048580))
 
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -4, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -3, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:5]),
-                         (True, -1048580, 5, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -4, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -3, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:5]),
+            (True, -1048580, 5, cborutil.SPECIAL_NONE),
+        )
 
     def testdecodepartialulonglong(self):
-        encoded = b''.join(cborutil.streamencode(2**32))
+        encoded = b''.join(cborutil.streamencode(2 ** 32))
 
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -8, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -7, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (False, None, -6, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (False, None, -5, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:5]),
-                         (False, None, -4, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:6]),
-                         (False, None, -3, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:7]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:8]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:9]),
-                         (True, 2**32, 9, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -8, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -7, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (False, None, -6, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (False, None, -5, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:5]),
+            (False, None, -4, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:6]),
+            (False, None, -3, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:7]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:8]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:9]),
+            (True, 2 ** 32, 9, cborutil.SPECIAL_NONE),
+        )
 
         with self.assertRaisesRegex(
-            cborutil.CBORDecodeError, 'input data not fully consumed'):
+            cborutil.CBORDecodeError, 'input data not fully consumed'
+        ):
             cborutil.decodeall(encoded[0:1])
 
         with self.assertRaisesRegex(
-            cborutil.CBORDecodeError, 'input data not fully consumed'):
+            cborutil.CBORDecodeError, 'input data not fully consumed'
+        ):
             cborutil.decodeall(encoded[0:2])
 
     def testdecodepartiallonglong(self):
         encoded = b''.join(cborutil.streamencode(-7000000000))
 
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -8, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -7, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (False, None, -6, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (False, None, -5, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:5]),
-                         (False, None, -4, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:6]),
-                         (False, None, -3, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:7]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:8]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:9]),
-                         (True, -7000000000, 9, cborutil.SPECIAL_NONE))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -8, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -7, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (False, None, -6, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (False, None, -5, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:5]),
+            (False, None, -4, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:6]),
+            (False, None, -3, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:7]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:8]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:9]),
+            (True, -7000000000, 9, cborutil.SPECIAL_NONE),
+        )
+
 
 class ArrayTests(TestCase):
     def testempty(self):
@@ -510,35 +669,36 @@
     def testbasic(self):
         source = [b'foo', b'bar', 1, -10]
 
-        chunks = [
-            b'\x84', b'\x43', b'foo', b'\x43', b'bar', b'\x01', b'\x29']
+        chunks = [b'\x84', b'\x43', b'foo', b'\x43', b'bar', b'\x01', b'\x29']
 
         self.assertEqual(list(cborutil.streamencode(source)), chunks)
 
         self.assertEqual(cborutil.decodeall(b''.join(chunks)), [source])
 
     def testemptyfromiter(self):
-        self.assertEqual(b''.join(cborutil.streamencodearrayfromiter([])),
-                         b'\x9f\xff')
+        self.assertEqual(
+            b''.join(cborutil.streamencodearrayfromiter([])), b'\x9f\xff'
+        )
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'indefinite length uint not allowed'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError, 'indefinite length uint not allowed'
+        ):
             cborutil.decodeall(b'\x9f\xff')
 
     def testfromiter1(self):
         source = [b'foo']
 
-        self.assertEqual(list(cborutil.streamencodearrayfromiter(source)), [
-            b'\x9f',
-            b'\x43', b'foo',
-            b'\xff',
-        ])
+        self.assertEqual(
+            list(cborutil.streamencodearrayfromiter(source)),
+            [b'\x9f', b'\x43', b'foo', b'\xff',],
+        )
 
         dest = b''.join(cborutil.streamencodearrayfromiter(source))
         self.assertEqual(cbor.loads(dest), source)
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'indefinite length uint not allowed'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError, 'indefinite length uint not allowed'
+        ):
             cborutil.decodeall(dest)
 
     def testtuple(self):
@@ -552,37 +712,59 @@
     def testpartialdecode(self):
         source = list(range(4))
         encoded = b''.join(cborutil.streamencode(source))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (True, 4, 1, cborutil.SPECIAL_START_ARRAY))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (True, 4, 1, cborutil.SPECIAL_START_ARRAY))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (True, 4, 1, cborutil.SPECIAL_START_ARRAY),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (True, 4, 1, cborutil.SPECIAL_START_ARRAY),
+        )
 
         source = list(range(23))
         encoded = b''.join(cborutil.streamencode(source))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (True, 23, 1, cborutil.SPECIAL_START_ARRAY))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (True, 23, 1, cborutil.SPECIAL_START_ARRAY))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (True, 23, 1, cborutil.SPECIAL_START_ARRAY),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (True, 23, 1, cborutil.SPECIAL_START_ARRAY),
+        )
 
         source = list(range(24))
         encoded = b''.join(cborutil.streamencode(source))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (True, 24, 2, cborutil.SPECIAL_START_ARRAY))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (True, 24, 2, cborutil.SPECIAL_START_ARRAY))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (True, 24, 2, cborutil.SPECIAL_START_ARRAY),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (True, 24, 2, cborutil.SPECIAL_START_ARRAY),
+        )
 
         source = list(range(256))
         encoded = b''.join(cborutil.streamencode(source))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (True, 256, 3, cborutil.SPECIAL_START_ARRAY))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (True, 256, 3, cborutil.SPECIAL_START_ARRAY))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (True, 256, 3, cborutil.SPECIAL_START_ARRAY),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (True, 256, 3, cborutil.SPECIAL_START_ARRAY),
+        )
 
     def testnested(self):
         source = [[], [], [[], [], []]]
@@ -607,17 +789,18 @@
         # Single value array whose value is an empty indefinite bytestring.
         encoded = b'\x81\x5f\x40\xff'
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'indefinite length bytestrings not '
-                                    'allowed as array values'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError,
+            'indefinite length bytestrings not ' 'allowed as array values',
+        ):
             cborutil.decodeall(encoded)
 
+
 class SetTests(TestCase):
     def testempty(self):
-        self.assertEqual(list(cborutil.streamencode(set())), [
-            b'\xd9\x01\x02',
-            b'\x80',
-        ])
+        self.assertEqual(
+            list(cborutil.streamencode(set())), [b'\xd9\x01\x02', b'\x80',]
+        )
 
         self.assertEqual(cborutil.decodeall(b'\xd9\x01\x02\x80'), [set()])
 
@@ -633,99 +816,135 @@
         # Must use array to encode sets.
         encoded = b'\xd9\x01\x02\xa0'
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'expected array after finite set '
-                                    'semantic tag'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError,
+            'expected array after finite set ' 'semantic tag',
+        ):
             cborutil.decodeall(encoded)
 
     def testpartialdecode(self):
         # Semantic tag item will be 3 bytes. Set header will be variable
         # depending on length.
         encoded = b''.join(cborutil.streamencode({i for i in range(23)}))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (True, 23, 4, cborutil.SPECIAL_START_SET))
-        self.assertEqual(cborutil.decodeitem(encoded[0:5]),
-                         (True, 23, 4, cborutil.SPECIAL_START_SET))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (True, 23, 4, cborutil.SPECIAL_START_SET),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:5]),
+            (True, 23, 4, cborutil.SPECIAL_START_SET),
+        )
 
         encoded = b''.join(cborutil.streamencode({i for i in range(24)}))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:5]),
-                         (True, 24, 5, cborutil.SPECIAL_START_SET))
-        self.assertEqual(cborutil.decodeitem(encoded[0:6]),
-                         (True, 24, 5, cborutil.SPECIAL_START_SET))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:5]),
+            (True, 24, 5, cborutil.SPECIAL_START_SET),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:6]),
+            (True, 24, 5, cborutil.SPECIAL_START_SET),
+        )
 
         encoded = b''.join(cborutil.streamencode({i for i in range(256)}))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:5]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:6]),
-                         (True, 256, 6, cborutil.SPECIAL_START_SET))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:5]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:6]),
+            (True, 256, 6, cborutil.SPECIAL_START_SET),
+        )
 
     def testinvalidvalue(self):
-        encoded = b''.join([
-            b'\xd9\x01\x02', # semantic tag
-            b'\x81', # array of size 1
-            b'\x5f\x43foo\xff', # indefinite length bytestring "foo"
-        ])
+        encoded = b''.join(
+            [
+                b'\xd9\x01\x02',  # semantic tag
+                b'\x81',  # array of size 1
+                b'\x5f\x43foo\xff',  # indefinite length bytestring "foo"
+            ]
+        )
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'indefinite length bytestrings not '
-                                    'allowed as set values'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError,
+            'indefinite length bytestrings not ' 'allowed as set values',
+        ):
+            cborutil.decodeall(encoded)
+
+        encoded = b''.join([b'\xd9\x01\x02', b'\x81', b'\x80',])  # empty array
+
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError, 'collections not allowed as set values'
+        ):
             cborutil.decodeall(encoded)
 
-        encoded = b''.join([
-            b'\xd9\x01\x02',
-            b'\x81',
-            b'\x80', # empty array
-        ])
+        encoded = b''.join([b'\xd9\x01\x02', b'\x81', b'\xa0',])  # empty map
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'collections not allowed as set values'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError, 'collections not allowed as set values'
+        ):
             cborutil.decodeall(encoded)
 
-        encoded = b''.join([
-            b'\xd9\x01\x02',
-            b'\x81',
-            b'\xa0', # empty map
-        ])
+        encoded = b''.join(
+            [
+                b'\xd9\x01\x02',
+                b'\x81',
+                b'\xd9\x01\x02\x81\x01',  # set with integer 1
+            ]
+        )
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'collections not allowed as set values'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError, 'collections not allowed as set values'
+        ):
             cborutil.decodeall(encoded)
 
-        encoded = b''.join([
-            b'\xd9\x01\x02',
-            b'\x81',
-            b'\xd9\x01\x02\x81\x01', # set with integer 1
-        ])
-
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'collections not allowed as set values'):
-            cborutil.decodeall(encoded)
 
 class BoolTests(TestCase):
     def testbasic(self):
-        self.assertEqual(list(cborutil.streamencode(True)),  [b'\xf5'])
+        self.assertEqual(list(cborutil.streamencode(True)), [b'\xf5'])
         self.assertEqual(list(cborutil.streamencode(False)), [b'\xf4'])
 
         self.assertIs(loadit(cborutil.streamencode(True)), True)
@@ -734,8 +953,10 @@
         self.assertEqual(cborutil.decodeall(b'\xf4'), [False])
         self.assertEqual(cborutil.decodeall(b'\xf5'), [True])
 
-        self.assertEqual(cborutil.decodeall(b'\xf4\xf5\xf5\xf4'),
-                         [False, True, True, False])
+        self.assertEqual(
+            cborutil.decodeall(b'\xf4\xf5\xf5\xf4'), [False, True, True, False]
+        )
+
 
 class NoneTests(TestCase):
     def testbasic(self):
@@ -746,6 +967,7 @@
         self.assertEqual(cborutil.decodeall(b'\xf6'), [None])
         self.assertEqual(cborutil.decodeall(b'\xf6\xf6'), [None, None])
 
+
 class MapTests(TestCase):
     def testempty(self):
         self.assertEqual(list(cborutil.streamencode({})), [b'\xa0'])
@@ -754,19 +976,23 @@
         self.assertEqual(cborutil.decodeall(b'\xa0'), [{}])
 
     def testemptyindefinite(self):
-        self.assertEqual(list(cborutil.streamencodemapfromiter([])), [
-            b'\xbf', b'\xff'])
+        self.assertEqual(
+            list(cborutil.streamencodemapfromiter([])), [b'\xbf', b'\xff']
+        )
 
         self.assertEqual(loadit(cborutil.streamencodemapfromiter([])), {})
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'indefinite length uint not allowed'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError, 'indefinite length uint not allowed'
+        ):
             cborutil.decodeall(b'\xbf\xff')
 
     def testone(self):
         source = {b'foo': b'bar'}
-        self.assertEqual(list(cborutil.streamencode(source)), [
-            b'\xa1', b'\x43', b'foo', b'\x43', b'bar'])
+        self.assertEqual(
+            list(cborutil.streamencode(source)),
+            [b'\xa1', b'\x43', b'foo', b'\x43', b'bar'],
+        )
 
         self.assertEqual(loadit(cborutil.streamencode(source)), source)
 
@@ -781,8 +1007,8 @@
         self.assertEqual(loadit(cborutil.streamencode(source)), source)
 
         self.assertEqual(
-            loadit(cborutil.streamencodemapfromiter(source.items())),
-            source)
+            loadit(cborutil.streamencodemapfromiter(source.items())), source
+        )
 
         encoded = b''.join(cborutil.streamencode(source))
         self.assertEqual(cborutil.decodeall(encoded), [source])
@@ -793,12 +1019,11 @@
             2: -10,
         }
 
-        self.assertEqual(loadit(cborutil.streamencode(source)),
-                         source)
+        self.assertEqual(loadit(cborutil.streamencode(source)), source)
 
         self.assertEqual(
-            loadit(cborutil.streamencodemapfromiter(source.items())),
-            source)
+            loadit(cborutil.streamencodemapfromiter(source.items())), source
+        )
 
         encoded = b''.join(cborutil.streamencode(source))
         self.assertEqual(cborutil.decodeall(encoded), [source])
@@ -819,88 +1044,124 @@
         self.assertEqual(cborutil.decodeall(encoded), [source])
 
     def testillegalkey(self):
-        encoded = b''.join([
-            # map header + len 1
-            b'\xa1',
-            # indefinite length bytestring "foo" in key position
-            b'\x5f\x03foo\xff'
-        ])
+        encoded = b''.join(
+            [
+                # map header + len 1
+                b'\xa1',
+                # indefinite length bytestring "foo" in key position
+                b'\x5f\x03foo\xff',
+            ]
+        )
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'indefinite length bytestrings not '
-                                    'allowed as map keys'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError,
+            'indefinite length bytestrings not ' 'allowed as map keys',
+        ):
             cborutil.decodeall(encoded)
 
-        encoded = b''.join([
-            b'\xa1',
-            b'\x80', # empty array
-            b'\x43foo',
-        ])
+        encoded = b''.join([b'\xa1', b'\x80', b'\x43foo',])  # empty array
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'collections not supported as map keys'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError, 'collections not supported as map keys'
+        ):
             cborutil.decodeall(encoded)
 
     def testillegalvalue(self):
-        encoded = b''.join([
-            b'\xa1', # map headers
-            b'\x43foo', # key
-            b'\x5f\x03bar\xff', # indefinite length value
-        ])
+        encoded = b''.join(
+            [
+                b'\xa1',  # map headers
+                b'\x43foo',  # key
+                b'\x5f\x03bar\xff',  # indefinite length value
+            ]
+        )
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'indefinite length bytestrings not '
-                                    'allowed as map values'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError,
+            'indefinite length bytestrings not ' 'allowed as map values',
+        ):
             cborutil.decodeall(encoded)
 
     def testpartialdecode(self):
         source = {b'key1': b'value1'}
         encoded = b''.join(cborutil.streamencode(source))
 
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (True, 1, 1, cborutil.SPECIAL_START_MAP))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (True, 1, 1, cborutil.SPECIAL_START_MAP))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (True, 1, 1, cborutil.SPECIAL_START_MAP),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (True, 1, 1, cborutil.SPECIAL_START_MAP),
+        )
 
         source = {b'key%d' % i: None for i in range(23)}
         encoded = b''.join(cborutil.streamencode(source))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (True, 23, 1, cborutil.SPECIAL_START_MAP))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (True, 23, 1, cborutil.SPECIAL_START_MAP),
+        )
 
         source = {b'key%d' % i: None for i in range(24)}
         encoded = b''.join(cborutil.streamencode(source))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (True, 24, 2, cborutil.SPECIAL_START_MAP))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (True, 24, 2, cborutil.SPECIAL_START_MAP))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (True, 24, 2, cborutil.SPECIAL_START_MAP),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (True, 24, 2, cborutil.SPECIAL_START_MAP),
+        )
 
         source = {b'key%d' % i: None for i in range(256)}
         encoded = b''.join(cborutil.streamencode(source))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (True, 256, 3, cborutil.SPECIAL_START_MAP))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (True, 256, 3, cborutil.SPECIAL_START_MAP))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (True, 256, 3, cborutil.SPECIAL_START_MAP),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (True, 256, 3, cborutil.SPECIAL_START_MAP),
+        )
 
         source = {b'key%d' % i: None for i in range(65536)}
         encoded = b''.join(cborutil.streamencode(source))
-        self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                         (False, None, -4, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                         (False, None, -3, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:3]),
-                         (False, None, -2, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:4]),
-                         (False, None, -1, cborutil.SPECIAL_NONE))
-        self.assertEqual(cborutil.decodeitem(encoded[0:5]),
-                         (True, 65536, 5, cborutil.SPECIAL_START_MAP))
-        self.assertEqual(cborutil.decodeitem(encoded[0:6]),
-                         (True, 65536, 5, cborutil.SPECIAL_START_MAP))
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:1]),
+            (False, None, -4, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:2]),
+            (False, None, -3, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:3]),
+            (False, None, -2, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:4]),
+            (False, None, -1, cborutil.SPECIAL_NONE),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:5]),
+            (True, 65536, 5, cborutil.SPECIAL_START_MAP),
+        )
+        self.assertEqual(
+            cborutil.decodeitem(encoded[0:6]),
+            (True, 65536, 5, cborutil.SPECIAL_START_MAP),
+        )
+
 
 class SemanticTagTests(TestCase):
     def testdecodeforbidden(self):
@@ -908,8 +1169,7 @@
             if i == cborutil.SEMANTIC_TAG_FINITE_SET:
                 continue
 
-            tag = cborutil.encodelength(cborutil.MAJOR_TYPE_SEMANTIC,
-                                        i)
+            tag = cborutil.encodelength(cborutil.MAJOR_TYPE_SEMANTIC, i)
 
             encoded = tag + cborutil.encodelength(cborutil.MAJOR_TYPE_UINT, 42)
 
@@ -917,18 +1177,26 @@
             if i < 24:
                 pass
             elif i < 256:
-                self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                                 (False, None, -1, cborutil.SPECIAL_NONE))
+                self.assertEqual(
+                    cborutil.decodeitem(encoded[0:1]),
+                    (False, None, -1, cborutil.SPECIAL_NONE),
+                )
             elif i < 65536:
-                self.assertEqual(cborutil.decodeitem(encoded[0:1]),
-                                 (False, None, -2, cborutil.SPECIAL_NONE))
-                self.assertEqual(cborutil.decodeitem(encoded[0:2]),
-                                 (False, None, -1, cborutil.SPECIAL_NONE))
+                self.assertEqual(
+                    cborutil.decodeitem(encoded[0:1]),
+                    (False, None, -2, cborutil.SPECIAL_NONE),
+                )
+                self.assertEqual(
+                    cborutil.decodeitem(encoded[0:2]),
+                    (False, None, -1, cborutil.SPECIAL_NONE),
+                )
 
-            with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                        r'semantic tag \d+ not allowed'):
+            with self.assertRaisesRegex(
+                cborutil.CBORDecodeError, r'semantic tag \d+ not allowed'
+            ):
                 cborutil.decodeitem(encoded)
 
+
 class SpecialTypesTests(TestCase):
     def testforbiddentypes(self):
         for i in range(256):
@@ -941,15 +1209,18 @@
 
             encoded = cborutil.encodelength(cborutil.MAJOR_TYPE_SPECIAL, i)
 
-            with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                        r'special type \d+ not allowed'):
+            with self.assertRaisesRegex(
+                cborutil.CBORDecodeError, r'special type \d+ not allowed'
+            ):
                 cborutil.decodeitem(encoded)
 
+
 class SansIODecoderTests(TestCase):
     def testemptyinput(self):
         decoder = cborutil.sansiodecoder()
         self.assertEqual(decoder.decode(b''), (False, 0, 0))
 
+
 class BufferingDecoderTests(TestCase):
     def testsimple(self):
         source = [
@@ -969,7 +1240,7 @@
             start = 0
 
             while start < len(encoded):
-                decoder.decode(encoded[start:start + step])
+                decoder.decode(encoded[start : start + step])
                 start += step
 
             self.assertEqual(decoder.getavailable(), [source])
@@ -982,20 +1253,23 @@
 
         self.assertEqual(decoder.getavailable(), [b'foobar'])
 
+
 class DecodeallTests(TestCase):
     def testemptyinput(self):
         self.assertEqual(cborutil.decodeall(b''), [])
 
     def testpartialinput(self):
-        encoded = b''.join([
-            b'\x82', # array of 2 elements
-            b'\x01', # integer 1
-        ])
+        encoded = b''.join(
+            [b'\x82', b'\x01',]  # array of 2 elements  # integer 1
+        )
 
-        with self.assertRaisesRegex(cborutil.CBORDecodeError,
-                                    'input data not complete'):
+        with self.assertRaisesRegex(
+            cborutil.CBORDecodeError, 'input data not complete'
+        ):
             cborutil.decodeall(encoded)
 
+
 if __name__ == '__main__':
     import silenttestrunner
+
     silenttestrunner.main(__name__)