Mercurial > hg-stable
view tests/test-cbor.py @ 39829:db875f97a969
py3: un-byteify strings around os.system() and os.devnull in contrib/perf
| author | Matt Harbison <matt_harbison@yahoo.com> |
|---|---|
| date | Fri, 21 Sep 2018 20:28:00 -0400 |
| parents | babad5ebaf0a |
| children | b638219a23c3 |
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from __future__ import absolute_import import unittest from mercurial.thirdparty import ( cbor, ) 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) 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']) 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']) def testlong(self): source = b'x' * 1048576 self.assertEqual(loadit(cborutil.streamencode(source)), source) encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeall(encoded), [source]) def testfromiter(self): # This is the example from RFC 7049 Section 2.2.2. source = [b'\xaa\xbb\xcc\xdd', b'\xee\xff\x99'] self.assertEqual( list(cborutil.streamencodebytestringfromiter(source)), [ b'\x5f', b'\x44', b'\xaa\xbb\xcc\xdd', b'\x43', b'\xee\xff\x99', b'\xff', ]) self.assertEqual( loadit(cborutil.streamencodebytestringfromiter(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'']) for i, chunk in enumerate( cborutil.decodeall(b'\x5f\x44\xaa\xbb\xcc\xdd' b'\x43\xee\xff\x99\xff')): self.assertIsInstance(chunk, cborutil.bytestringchunk) if i == 0: self.assertTrue(chunk.isfirst) else: self.assertFalse(chunk.isfirst) if i == 2: self.assertTrue(chunk.islast) else: self.assertFalse(chunk.islast) def testfromiterlarge(self): source = [b'a' * 16, b'b' * 128, b'c' * 1024, b'd' * 1048576] self.assertEqual( loadit(cborutil.streamencodebytestringfromiter(source)), b''.join(source)) def testindefinite(self): source = b'\x00\x01\x02\x03' + b'\xff' * 16384 it = cborutil.streamencodeindefinitebytestring(source, chunksize=2) self.assertEqual(next(it), b'\x5f') self.assertEqual(next(it), b'\x42') self.assertEqual(next(it), b'\x00\x01') self.assertEqual(next(it), b'\x42') self.assertEqual(next(it), b'\x02\x03') self.assertEqual(next(it), b'\x42') self.assertEqual(next(it), b'\xff\xff') dest = b''.join(cborutil.streamencodeindefinitebytestring( source, chunksize=42)) self.assertEqual(cbor.loads(dest), source) self.assertEqual(b''.join(cborutil.decodeall(dest)), source) for chunk in cborutil.decodeall(dest): self.assertIsInstance(chunk, cborutil.bytestringchunk) self.assertIn(len(chunk), (0, 8, 42)) encoded = b'\x5f\xff' b = cborutil.decodeall(encoded) self.assertEqual(b, [b'']) self.assertTrue(b[0].isfirst) self.assertTrue(b[0].islast) def testdecodevariouslengths(self): for i in (0, 1, 22, 23, 24, 25, 254, 255, 256, 65534, 65535, 65536): source = b'x' * i encoded = b''.join(cborutil.streamencode(source)) if len(source) < 24: hlen = 1 elif len(source) < 256: hlen = 2 elif len(source) < 65536: hlen = 3 elif len(source) < 1048576: hlen = 5 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)) def testpartialdecodevariouslengths(self): lens = [ 2, 3, 10, 23, 24, 25, 31, 100, 254, 255, 256, 257, 16384, 65534, 65535, 65536, 65537, 131071, 131072, 131073, 1048575, 1048576, 1048577, ] for size in lens: if size < 24: hlen = 1 elif size < 2**8: hlen = 2 elif size < 2**16: hlen = 3 elif size < 2**32: hlen = 5 else: assert False source = b'x' * size encoded = b''.join(cborutil.streamencode(source)) res = cborutil.decodeitem(encoded[0:1]) if hlen > 1: self.assertEqual(res, (False, None, -(hlen - 1), cborutil.SPECIAL_NONE)) else: 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)) # Decoding complete header reports item size. 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)) # Decoding all but the last byte reports -1 needed. 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)) def testindefinitepartialdecode(self): 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)) # 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[1:8]), (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[8:12]), (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)) # 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[0:9]), (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)) decoder = cborutil.sansiodecoder() decoder.decode(encoded[0:8]) values = decoder.getavailable() self.assertEqual(values, [b'foobar']) self.assertTrue(values[0].isfirst) self.assertFalse(values[0].islast) 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)) 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'): cborutil.decodeall(encoded) class IntTests(TestCase): def testsmall(self): self.assertEqual(list(cborutil.streamencode(0)), [b'\x00']) self.assertEqual(cborutil.decodeall(b'\x00'), [0]) self.assertEqual(list(cborutil.streamencode(1)), [b'\x01']) self.assertEqual(cborutil.decodeall(b'\x01'), [1]) self.assertEqual(list(cborutil.streamencode(2)), [b'\x02']) self.assertEqual(cborutil.decodeall(b'\x02'), [2]) self.assertEqual(list(cborutil.streamencode(3)), [b'\x03']) self.assertEqual(cborutil.decodeall(b'\x03'), [3]) self.assertEqual(list(cborutil.streamencode(4)), [b'\x04']) 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]) def testnegativesmall(self): self.assertEqual(list(cborutil.streamencode(-1)), [b'\x20']) self.assertEqual(cborutil.decodeall(b'\x20'), [-1]) self.assertEqual(list(cborutil.streamencode(-2)), [b'\x21']) self.assertEqual(cborutil.decodeall(b'\x21'), [-2]) self.assertEqual(list(cborutil.streamencode(-3)), [b'\x22']) self.assertEqual(cborutil.decodeall(b'\x22'), [-3]) self.assertEqual(list(cborutil.streamencode(-4)), [b'\x23']) self.assertEqual(cborutil.decodeall(b'\x23'), [-4]) self.assertEqual(list(cborutil.streamencode(-5)), [b'\x24']) 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]) def testrange(self): for i in range(-70000, 70000, 10): encoded = b''.join(cborutil.streamencode(i)) self.assertEqual(encoded, cbor.dumps(i)) self.assertEqual(cborutil.decodeall(encoded), [i]) 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)) 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)) def testdecodepartialushort(self): 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)) 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)) def testdecodepartialulong(self): 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)) 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)) def testdecodepartialulonglong(self): 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)) with self.assertRaisesRegex( cborutil.CBORDecodeError, 'input data not fully consumed'): cborutil.decodeall(encoded[0:1]) with self.assertRaisesRegex( 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)) class ArrayTests(TestCase): def testempty(self): self.assertEqual(list(cborutil.streamencode([])), [b'\x80']) self.assertEqual(loadit(cborutil.streamencode([])), []) self.assertEqual(cborutil.decodeall(b'\x80'), [[]]) 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'] 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') 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', ]) dest = b''.join(cborutil.streamencodearrayfromiter(source)) self.assertEqual(cbor.loads(dest), source) with self.assertRaisesRegex(cborutil.CBORDecodeError, 'indefinite length uint not allowed'): cborutil.decodeall(dest) def testtuple(self): source = (b'foo', None, 42) encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cbor.loads(encoded), list(source)) self.assertEqual(cborutil.decodeall(encoded), [list(source)]) 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)) 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)) 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)) 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)) def testnested(self): source = [[], [], [[], [], []]] encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeall(encoded), [source]) source = [True, None, [True, 0, 2], [None], [], [[[]], -87]] encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeall(encoded), [source]) # A set within an array. source = [None, {b'foo', b'bar', None, False}, set()] encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeall(encoded), [source]) # A map within an array. source = [None, {}, {b'foo': b'bar', True: False}, [{}]] encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeall(encoded), [source]) def testindefinitebytestringvalues(self): # 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'): cborutil.decodeall(encoded) class SetTests(TestCase): def testempty(self): self.assertEqual(list(cborutil.streamencode(set())), [ b'\xd9\x01\x02', b'\x80', ]) self.assertEqual(cborutil.decodeall(b'\xd9\x01\x02\x80'), [set()]) def testset(self): source = {b'foo', None, 42} encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cbor.loads(encoded), source) self.assertEqual(cborutil.decodeall(encoded), [source]) def testinvalidtag(self): # Must use array to encode sets. encoded = b'\xd9\x01\x02\xa0' 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)) 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)) 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)) 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" ]) 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'\xa0', # empty map ]) 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(False)), [b'\xf4']) self.assertIs(loadit(cborutil.streamencode(True)), True) self.assertIs(loadit(cborutil.streamencode(False)), False) 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]) class NoneTests(TestCase): def testbasic(self): self.assertEqual(list(cborutil.streamencode(None)), [b'\xf6']) self.assertIs(loadit(cborutil.streamencode(None)), None) 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']) self.assertEqual(loadit(cborutil.streamencode({})), {}) self.assertEqual(cborutil.decodeall(b'\xa0'), [{}]) def testemptyindefinite(self): self.assertEqual(list(cborutil.streamencodemapfromiter([])), [ b'\xbf', b'\xff']) self.assertEqual(loadit(cborutil.streamencodemapfromiter([])), {}) 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(loadit(cborutil.streamencode(source)), source) self.assertEqual(cborutil.decodeall(b'\xa1\x43foo\x43bar'), [source]) def testmultiple(self): source = { b'foo': b'bar', b'baz': b'value1', } self.assertEqual(loadit(cborutil.streamencode(source)), source) self.assertEqual( loadit(cborutil.streamencodemapfromiter(source.items())), source) encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeall(encoded), [source]) def testcomplex(self): source = { b'key': 1, 2: -10, } self.assertEqual(loadit(cborutil.streamencode(source)), source) self.assertEqual( loadit(cborutil.streamencodemapfromiter(source.items())), source) encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeall(encoded), [source]) def testnested(self): source = {b'key1': None, b'key2': {b'sub1': b'sub2'}, b'sub2': {}} encoded = b''.join(cborutil.streamencode(source)) self.assertEqual(cborutil.decodeall(encoded), [source]) source = { b'key1': [], b'key2': [None, False], b'key3': {b'foo', b'bar'}, b'key4': {}, } encoded = b''.join(cborutil.streamencode(source)) 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' ]) 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', ]) 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 ]) 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)) 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)) 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)) 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)) 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)) class SemanticTagTests(TestCase): def testdecodeforbidden(self): for i in range(500): if i == cborutil.SEMANTIC_TAG_FINITE_SET: continue tag = cborutil.encodelength(cborutil.MAJOR_TYPE_SEMANTIC, i) encoded = tag + cborutil.encodelength(cborutil.MAJOR_TYPE_UINT, 42) # Partial decode is incomplete. if i < 24: pass elif i < 256: 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)) with self.assertRaisesRegex(cborutil.CBORDecodeError, 'semantic tag \d+ not allowed'): cborutil.decodeitem(encoded) class SpecialTypesTests(TestCase): def testforbiddentypes(self): for i in range(256): if i == cborutil.SUBTYPE_FALSE: continue elif i == cborutil.SUBTYPE_TRUE: continue elif i == cborutil.SUBTYPE_NULL: continue encoded = cborutil.encodelength(cborutil.MAJOR_TYPE_SPECIAL, i) with self.assertRaisesRegex(cborutil.CBORDecodeError, '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 = [ b'foobar', b'x' * 128, {b'foo': b'bar'}, True, False, None, [None for i in range(128)], ] encoded = b''.join(cborutil.streamencode(source)) for step in range(1, 32): decoder = cborutil.bufferingdecoder() start = 0 while start < len(encoded): decoder.decode(encoded[start:start + step]) start += step self.assertEqual(decoder.getavailable(), [source]) 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 ]) with self.assertRaisesRegex(cborutil.CBORDecodeError, 'input data not complete'): cborutil.decodeall(encoded) if __name__ == '__main__': import silenttestrunner silenttestrunner.main(__name__)