mirror of https://github.com/python/cpython
654 lines
23 KiB
Python
654 lines
23 KiB
Python
from test import support
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from test.support import os_helper, requires_debug_ranges
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from test.support.script_helper import assert_python_ok
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import array
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import io
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import marshal
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import sys
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import unittest
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import os
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import types
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import textwrap
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try:
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import _testcapi
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except ImportError:
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_testcapi = None
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class HelperMixin:
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def helper(self, sample, *extra):
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new = marshal.loads(marshal.dumps(sample, *extra))
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self.assertEqual(sample, new)
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try:
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with open(os_helper.TESTFN, "wb") as f:
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marshal.dump(sample, f, *extra)
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with open(os_helper.TESTFN, "rb") as f:
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new = marshal.load(f)
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self.assertEqual(sample, new)
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finally:
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os_helper.unlink(os_helper.TESTFN)
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class IntTestCase(unittest.TestCase, HelperMixin):
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def test_ints(self):
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# Test a range of Python ints larger than the machine word size.
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n = sys.maxsize ** 2
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while n:
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for expected in (-n, n):
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self.helper(expected)
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n = n >> 1
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def test_int64(self):
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# Simulate int marshaling with TYPE_INT64.
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maxint64 = (1 << 63) - 1
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minint64 = -maxint64-1
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for base in maxint64, minint64, -maxint64, -(minint64 >> 1):
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while base:
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s = b'I' + int.to_bytes(base, 8, 'little', signed=True)
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got = marshal.loads(s)
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self.assertEqual(base, got)
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if base == -1: # a fixed-point for shifting right 1
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base = 0
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else:
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base >>= 1
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got = marshal.loads(b'I\xfe\xdc\xba\x98\x76\x54\x32\x10')
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self.assertEqual(got, 0x1032547698badcfe)
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got = marshal.loads(b'I\x01\x23\x45\x67\x89\xab\xcd\xef')
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self.assertEqual(got, -0x1032547698badcff)
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got = marshal.loads(b'I\x08\x19\x2a\x3b\x4c\x5d\x6e\x7f')
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self.assertEqual(got, 0x7f6e5d4c3b2a1908)
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got = marshal.loads(b'I\xf7\xe6\xd5\xc4\xb3\xa2\x91\x80')
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self.assertEqual(got, -0x7f6e5d4c3b2a1909)
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def test_bool(self):
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for b in (True, False):
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self.helper(b)
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class FloatTestCase(unittest.TestCase, HelperMixin):
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def test_floats(self):
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# Test a few floats
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small = 1e-25
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n = sys.maxsize * 3.7e250
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while n > small:
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for expected in (-n, n):
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self.helper(float(expected))
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n /= 123.4567
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f = 0.0
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s = marshal.dumps(f, 2)
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got = marshal.loads(s)
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self.assertEqual(f, got)
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# and with version <= 1 (floats marshalled differently then)
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s = marshal.dumps(f, 1)
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got = marshal.loads(s)
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self.assertEqual(f, got)
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n = sys.maxsize * 3.7e-250
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while n < small:
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for expected in (-n, n):
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f = float(expected)
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self.helper(f)
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self.helper(f, 1)
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n *= 123.4567
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class StringTestCase(unittest.TestCase, HelperMixin):
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def test_unicode(self):
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for s in ["", "Andr\xe8 Previn", "abc", " "*10000]:
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self.helper(marshal.loads(marshal.dumps(s)))
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def test_string(self):
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for s in ["", "Andr\xe8 Previn", "abc", " "*10000]:
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self.helper(s)
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def test_bytes(self):
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for s in [b"", b"Andr\xe8 Previn", b"abc", b" "*10000]:
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self.helper(s)
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class ExceptionTestCase(unittest.TestCase):
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def test_exceptions(self):
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new = marshal.loads(marshal.dumps(StopIteration))
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self.assertEqual(StopIteration, new)
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class CodeTestCase(unittest.TestCase):
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def test_code(self):
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co = ExceptionTestCase.test_exceptions.__code__
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new = marshal.loads(marshal.dumps(co))
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self.assertEqual(co, new)
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def test_many_codeobjects(self):
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# Issue2957: bad recursion count on code objects
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# more than MAX_MARSHAL_STACK_DEPTH
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count = support.EXCEEDS_RECURSION_LIMIT
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codes = (ExceptionTestCase.test_exceptions.__code__,) * count
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marshal.loads(marshal.dumps(codes))
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def test_different_filenames(self):
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co1 = compile("x", "f1", "exec")
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co2 = compile("y", "f2", "exec")
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co1, co2 = marshal.loads(marshal.dumps((co1, co2)))
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self.assertEqual(co1.co_filename, "f1")
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self.assertEqual(co2.co_filename, "f2")
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@requires_debug_ranges()
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def test_minimal_linetable_with_no_debug_ranges(self):
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# Make sure when demarshalling objects with `-X no_debug_ranges`
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# that the columns are None.
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co = ExceptionTestCase.test_exceptions.__code__
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code = textwrap.dedent("""
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import sys
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import marshal
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with open(sys.argv[1], 'rb') as f:
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co = marshal.load(f)
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positions = list(co.co_positions())
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assert positions[0][2] is None
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assert positions[0][3] is None
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""")
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try:
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with open(os_helper.TESTFN, 'wb') as f:
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marshal.dump(co, f)
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assert_python_ok('-X', 'no_debug_ranges',
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'-c', code, os_helper.TESTFN)
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finally:
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os_helper.unlink(os_helper.TESTFN)
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@support.cpython_only
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def test_same_filename_used(self):
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s = """def f(): pass\ndef g(): pass"""
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co = compile(s, "myfile", "exec")
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co = marshal.loads(marshal.dumps(co))
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for obj in co.co_consts:
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if isinstance(obj, types.CodeType):
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self.assertIs(co.co_filename, obj.co_filename)
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class ContainerTestCase(unittest.TestCase, HelperMixin):
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d = {'astring': 'foo@bar.baz.spam',
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'afloat': 7283.43,
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'anint': 2**20,
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'ashortlong': 2,
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'alist': ['.zyx.41'],
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'atuple': ('.zyx.41',)*10,
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'aboolean': False,
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'aunicode': "Andr\xe8 Previn"
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}
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def test_dict(self):
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self.helper(self.d)
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def test_list(self):
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self.helper(list(self.d.items()))
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def test_tuple(self):
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self.helper(tuple(self.d.keys()))
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def test_sets(self):
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for constructor in (set, frozenset):
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self.helper(constructor(self.d.keys()))
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class BufferTestCase(unittest.TestCase, HelperMixin):
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def test_bytearray(self):
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b = bytearray(b"abc")
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self.helper(b)
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new = marshal.loads(marshal.dumps(b))
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self.assertEqual(type(new), bytes)
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def test_memoryview(self):
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b = memoryview(b"abc")
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self.helper(b)
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new = marshal.loads(marshal.dumps(b))
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self.assertEqual(type(new), bytes)
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def test_array(self):
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a = array.array('B', b"abc")
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new = marshal.loads(marshal.dumps(a))
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self.assertEqual(new, b"abc")
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class BugsTestCase(unittest.TestCase):
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def test_bug_5888452(self):
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# Simple-minded check for SF 588452: Debug build crashes
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marshal.dumps([128] * 1000)
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def test_patch_873224(self):
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self.assertRaises(Exception, marshal.loads, b'0')
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self.assertRaises(Exception, marshal.loads, b'f')
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self.assertRaises(Exception, marshal.loads, marshal.dumps(2**65)[:-1])
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def test_version_argument(self):
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# Python 2.4.0 crashes for any call to marshal.dumps(x, y)
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self.assertEqual(marshal.loads(marshal.dumps(5, 0)), 5)
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self.assertEqual(marshal.loads(marshal.dumps(5, 1)), 5)
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def test_fuzz(self):
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# simple test that it's at least not *totally* trivial to
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# crash from bad marshal data
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for i in range(256):
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c = bytes([i])
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try:
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marshal.loads(c)
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except Exception:
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pass
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def test_loads_recursion(self):
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def run_tests(N, check):
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# (((...None...),),)
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check(b')\x01' * N + b'N')
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check(b'(\x01\x00\x00\x00' * N + b'N')
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# [[[...None...]]]
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check(b'[\x01\x00\x00\x00' * N + b'N')
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# {None: {None: {None: ...None...}}}
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check(b'{N' * N + b'N' + b'0' * N)
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# frozenset([frozenset([frozenset([...None...])])])
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check(b'>\x01\x00\x00\x00' * N + b'N')
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# Check that the generated marshal data is valid and marshal.loads()
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# works for moderately deep nesting
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run_tests(100, marshal.loads)
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# Very deeply nested structure shouldn't blow the stack
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def check(s):
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self.assertRaises(ValueError, marshal.loads, s)
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run_tests(2**20, check)
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def test_recursion_limit(self):
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# Create a deeply nested structure.
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head = last = []
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# The max stack depth should match the value in Python/marshal.c.
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# BUG: https://bugs.python.org/issue33720
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# Windows always limits the maximum depth on release and debug builds
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#if os.name == 'nt' and support.Py_DEBUG:
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if os.name == 'nt':
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MAX_MARSHAL_STACK_DEPTH = 1000
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else:
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MAX_MARSHAL_STACK_DEPTH = 2000
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for i in range(MAX_MARSHAL_STACK_DEPTH - 2):
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last.append([0])
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last = last[-1]
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# Verify we don't blow out the stack with dumps/load.
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data = marshal.dumps(head)
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new_head = marshal.loads(data)
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# Don't use == to compare objects, it can exceed the recursion limit.
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self.assertEqual(len(new_head), len(head))
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self.assertEqual(len(new_head[0]), len(head[0]))
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self.assertEqual(len(new_head[-1]), len(head[-1]))
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last.append([0])
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self.assertRaises(ValueError, marshal.dumps, head)
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def test_exact_type_match(self):
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# Former bug:
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# >>> class Int(int): pass
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# >>> type(loads(dumps(Int())))
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# <type 'int'>
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for typ in (int, float, complex, tuple, list, dict, set, frozenset):
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# Note: str subclasses are not tested because they get handled
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# by marshal's routines for objects supporting the buffer API.
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subtyp = type('subtyp', (typ,), {})
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self.assertRaises(ValueError, marshal.dumps, subtyp())
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# Issue #1792 introduced a change in how marshal increases the size of its
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# internal buffer; this test ensures that the new code is exercised.
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def test_large_marshal(self):
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size = int(1e6)
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testString = 'abc' * size
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marshal.dumps(testString)
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def test_invalid_longs(self):
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# Issue #7019: marshal.loads shouldn't produce unnormalized PyLongs
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invalid_string = b'l\x02\x00\x00\x00\x00\x00\x00\x00'
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self.assertRaises(ValueError, marshal.loads, invalid_string)
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def test_multiple_dumps_and_loads(self):
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# Issue 12291: marshal.load() should be callable multiple times
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# with interleaved data written by non-marshal code
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# Adapted from a patch by Engelbert Gruber.
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data = (1, 'abc', b'def', 1.0, (2, 'a', ['b', b'c']))
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for interleaved in (b'', b'0123'):
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ilen = len(interleaved)
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positions = []
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try:
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with open(os_helper.TESTFN, 'wb') as f:
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for d in data:
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marshal.dump(d, f)
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if ilen:
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f.write(interleaved)
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positions.append(f.tell())
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with open(os_helper.TESTFN, 'rb') as f:
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for i, d in enumerate(data):
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self.assertEqual(d, marshal.load(f))
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if ilen:
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f.read(ilen)
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self.assertEqual(positions[i], f.tell())
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finally:
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os_helper.unlink(os_helper.TESTFN)
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def test_loads_reject_unicode_strings(self):
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# Issue #14177: marshal.loads() should not accept unicode strings
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unicode_string = 'T'
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self.assertRaises(TypeError, marshal.loads, unicode_string)
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def test_bad_reader(self):
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class BadReader(io.BytesIO):
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def readinto(self, buf):
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n = super().readinto(buf)
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if n is not None and n > 4:
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n += 10**6
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return n
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for value in (1.0, 1j, b'0123456789', '0123456789'):
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self.assertRaises(ValueError, marshal.load,
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BadReader(marshal.dumps(value)))
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def test_eof(self):
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data = marshal.dumps(("hello", "dolly", None))
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for i in range(len(data)):
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self.assertRaises(EOFError, marshal.loads, data[0: i])
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def test_deterministic_sets(self):
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# bpo-37596: To support reproducible builds, sets and frozensets need to
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# have their elements serialized in a consistent order (even when they
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# have been scrambled by hash randomization):
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for kind in ("set", "frozenset"):
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for elements in (
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"float('nan'), b'a', b'b', b'c', 'x', 'y', 'z'",
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# Also test for bad interactions with backreferencing:
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"('Spam', 0), ('Spam', 1), ('Spam', 2)",
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):
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s = f"{kind}([{elements}])"
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with self.subTest(s):
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# First, make sure that our test case still has different
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# orders under hash seeds 0 and 1. If this check fails, we
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# need to update this test with different elements. Skip
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# this part if we are configured to use any other hash
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# algorithm (for example, using Py_HASH_EXTERNAL):
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if sys.hash_info.algorithm in {"fnv", "siphash24"}:
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args = ["-c", f"print({s})"]
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_, repr_0, _ = assert_python_ok(*args, PYTHONHASHSEED="0")
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_, repr_1, _ = assert_python_ok(*args, PYTHONHASHSEED="1")
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self.assertNotEqual(repr_0, repr_1)
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# Then, perform the actual test:
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args = ["-c", f"import marshal; print(marshal.dumps({s}))"]
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_, dump_0, _ = assert_python_ok(*args, PYTHONHASHSEED="0")
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_, dump_1, _ = assert_python_ok(*args, PYTHONHASHSEED="1")
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self.assertEqual(dump_0, dump_1)
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LARGE_SIZE = 2**31
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pointer_size = 8 if sys.maxsize > 0xFFFFFFFF else 4
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class NullWriter:
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def write(self, s):
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pass
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@unittest.skipIf(LARGE_SIZE > sys.maxsize, "test cannot run on 32-bit systems")
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class LargeValuesTestCase(unittest.TestCase):
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def check_unmarshallable(self, data):
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self.assertRaises(ValueError, marshal.dump, data, NullWriter())
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@support.bigmemtest(size=LARGE_SIZE, memuse=2, dry_run=False)
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def test_bytes(self, size):
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self.check_unmarshallable(b'x' * size)
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@support.bigmemtest(size=LARGE_SIZE, memuse=2, dry_run=False)
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def test_str(self, size):
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self.check_unmarshallable('x' * size)
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@support.bigmemtest(size=LARGE_SIZE, memuse=pointer_size + 1, dry_run=False)
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def test_tuple(self, size):
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self.check_unmarshallable((None,) * size)
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@support.bigmemtest(size=LARGE_SIZE, memuse=pointer_size + 1, dry_run=False)
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def test_list(self, size):
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self.check_unmarshallable([None] * size)
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@support.bigmemtest(size=LARGE_SIZE,
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memuse=pointer_size*12 + sys.getsizeof(LARGE_SIZE-1),
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dry_run=False)
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def test_set(self, size):
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self.check_unmarshallable(set(range(size)))
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@support.bigmemtest(size=LARGE_SIZE,
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memuse=pointer_size*12 + sys.getsizeof(LARGE_SIZE-1),
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dry_run=False)
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def test_frozenset(self, size):
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self.check_unmarshallable(frozenset(range(size)))
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@support.bigmemtest(size=LARGE_SIZE, memuse=2, dry_run=False)
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def test_bytearray(self, size):
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self.check_unmarshallable(bytearray(size))
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def CollectObjectIDs(ids, obj):
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"""Collect object ids seen in a structure"""
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if id(obj) in ids:
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return
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ids.add(id(obj))
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if isinstance(obj, (list, tuple, set, frozenset)):
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for e in obj:
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CollectObjectIDs(ids, e)
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elif isinstance(obj, dict):
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for k, v in obj.items():
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CollectObjectIDs(ids, k)
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CollectObjectIDs(ids, v)
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return len(ids)
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class InstancingTestCase(unittest.TestCase, HelperMixin):
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keys = (123, 1.2345, 'abc', (123, 'abc'), frozenset({123, 'abc'}))
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def helper3(self, rsample, recursive=False, simple=False):
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#we have two instances
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sample = (rsample, rsample)
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n0 = CollectObjectIDs(set(), sample)
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for v in range(3, marshal.version + 1):
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s3 = marshal.dumps(sample, v)
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n3 = CollectObjectIDs(set(), marshal.loads(s3))
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#same number of instances generated
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self.assertEqual(n3, n0)
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if not recursive:
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#can compare with version 2
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s2 = marshal.dumps(sample, 2)
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n2 = CollectObjectIDs(set(), marshal.loads(s2))
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#old format generated more instances
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self.assertGreater(n2, n0)
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#if complex objects are in there, old format is larger
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if not simple:
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self.assertGreater(len(s2), len(s3))
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else:
|
|
self.assertGreaterEqual(len(s2), len(s3))
|
|
|
|
def testInt(self):
|
|
intobj = 123321
|
|
self.helper(intobj)
|
|
self.helper3(intobj, simple=True)
|
|
|
|
def testFloat(self):
|
|
floatobj = 1.2345
|
|
self.helper(floatobj)
|
|
self.helper3(floatobj)
|
|
|
|
def testStr(self):
|
|
strobj = "abcde"*3
|
|
self.helper(strobj)
|
|
self.helper3(strobj)
|
|
|
|
def testBytes(self):
|
|
bytesobj = b"abcde"*3
|
|
self.helper(bytesobj)
|
|
self.helper3(bytesobj)
|
|
|
|
def testList(self):
|
|
for obj in self.keys:
|
|
listobj = [obj, obj]
|
|
self.helper(listobj)
|
|
self.helper3(listobj)
|
|
|
|
def testTuple(self):
|
|
for obj in self.keys:
|
|
tupleobj = (obj, obj)
|
|
self.helper(tupleobj)
|
|
self.helper3(tupleobj)
|
|
|
|
def testSet(self):
|
|
for obj in self.keys:
|
|
setobj = {(obj, 1), (obj, 2)}
|
|
self.helper(setobj)
|
|
self.helper3(setobj)
|
|
|
|
def testFrozenSet(self):
|
|
for obj in self.keys:
|
|
frozensetobj = frozenset({(obj, 1), (obj, 2)})
|
|
self.helper(frozensetobj)
|
|
self.helper3(frozensetobj)
|
|
|
|
def testDict(self):
|
|
for obj in self.keys:
|
|
dictobj = {"hello": obj, "goodbye": obj, obj: "hello"}
|
|
self.helper(dictobj)
|
|
self.helper3(dictobj)
|
|
|
|
def testModule(self):
|
|
with open(__file__, "rb") as f:
|
|
code = f.read()
|
|
if __file__.endswith(".py"):
|
|
code = compile(code, __file__, "exec")
|
|
self.helper(code)
|
|
self.helper3(code)
|
|
|
|
def testRecursion(self):
|
|
obj = 1.2345
|
|
d = {"hello": obj, "goodbye": obj, obj: "hello"}
|
|
d["self"] = d
|
|
self.helper3(d, recursive=True)
|
|
l = [obj, obj]
|
|
l.append(l)
|
|
self.helper3(l, recursive=True)
|
|
|
|
class CompatibilityTestCase(unittest.TestCase):
|
|
def _test(self, version):
|
|
with open(__file__, "rb") as f:
|
|
code = f.read()
|
|
if __file__.endswith(".py"):
|
|
code = compile(code, __file__, "exec")
|
|
data = marshal.dumps(code, version)
|
|
marshal.loads(data)
|
|
|
|
def test0To3(self):
|
|
self._test(0)
|
|
|
|
def test1To3(self):
|
|
self._test(1)
|
|
|
|
def test2To3(self):
|
|
self._test(2)
|
|
|
|
def test3To3(self):
|
|
self._test(3)
|
|
|
|
class InterningTestCase(unittest.TestCase, HelperMixin):
|
|
strobj = "this is an interned string"
|
|
strobj = sys.intern(strobj)
|
|
|
|
def testIntern(self):
|
|
s = marshal.loads(marshal.dumps(self.strobj))
|
|
self.assertEqual(s, self.strobj)
|
|
self.assertEqual(id(s), id(self.strobj))
|
|
s2 = sys.intern(s)
|
|
self.assertEqual(id(s2), id(s))
|
|
|
|
def testNoIntern(self):
|
|
s = marshal.loads(marshal.dumps(self.strobj, 2))
|
|
self.assertEqual(s, self.strobj)
|
|
self.assertNotEqual(id(s), id(self.strobj))
|
|
s2 = sys.intern(s)
|
|
self.assertNotEqual(id(s2), id(s))
|
|
|
|
@support.cpython_only
|
|
@unittest.skipUnless(_testcapi, 'requires _testcapi')
|
|
class CAPI_TestCase(unittest.TestCase, HelperMixin):
|
|
|
|
def test_write_long_to_file(self):
|
|
for v in range(marshal.version + 1):
|
|
_testcapi.pymarshal_write_long_to_file(0x12345678, os_helper.TESTFN, v)
|
|
with open(os_helper.TESTFN, 'rb') as f:
|
|
data = f.read()
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
self.assertEqual(data, b'\x78\x56\x34\x12')
|
|
|
|
def test_write_object_to_file(self):
|
|
obj = ('\u20ac', b'abc', 123, 45.6, 7+8j, 'long line '*1000)
|
|
for v in range(marshal.version + 1):
|
|
_testcapi.pymarshal_write_object_to_file(obj, os_helper.TESTFN, v)
|
|
with open(os_helper.TESTFN, 'rb') as f:
|
|
data = f.read()
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
self.assertEqual(marshal.loads(data), obj)
|
|
|
|
def test_read_short_from_file(self):
|
|
with open(os_helper.TESTFN, 'wb') as f:
|
|
f.write(b'\x34\x12xxxx')
|
|
r, p = _testcapi.pymarshal_read_short_from_file(os_helper.TESTFN)
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
self.assertEqual(r, 0x1234)
|
|
self.assertEqual(p, 2)
|
|
|
|
with open(os_helper.TESTFN, 'wb') as f:
|
|
f.write(b'\x12')
|
|
with self.assertRaises(EOFError):
|
|
_testcapi.pymarshal_read_short_from_file(os_helper.TESTFN)
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
|
|
def test_read_long_from_file(self):
|
|
with open(os_helper.TESTFN, 'wb') as f:
|
|
f.write(b'\x78\x56\x34\x12xxxx')
|
|
r, p = _testcapi.pymarshal_read_long_from_file(os_helper.TESTFN)
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
self.assertEqual(r, 0x12345678)
|
|
self.assertEqual(p, 4)
|
|
|
|
with open(os_helper.TESTFN, 'wb') as f:
|
|
f.write(b'\x56\x34\x12')
|
|
with self.assertRaises(EOFError):
|
|
_testcapi.pymarshal_read_long_from_file(os_helper.TESTFN)
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
|
|
def test_read_last_object_from_file(self):
|
|
obj = ('\u20ac', b'abc', 123, 45.6, 7+8j)
|
|
for v in range(marshal.version + 1):
|
|
data = marshal.dumps(obj, v)
|
|
with open(os_helper.TESTFN, 'wb') as f:
|
|
f.write(data + b'xxxx')
|
|
r, p = _testcapi.pymarshal_read_last_object_from_file(os_helper.TESTFN)
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
self.assertEqual(r, obj)
|
|
|
|
with open(os_helper.TESTFN, 'wb') as f:
|
|
f.write(data[:1])
|
|
with self.assertRaises(EOFError):
|
|
_testcapi.pymarshal_read_last_object_from_file(os_helper.TESTFN)
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
|
|
def test_read_object_from_file(self):
|
|
obj = ('\u20ac', b'abc', 123, 45.6, 7+8j)
|
|
for v in range(marshal.version + 1):
|
|
data = marshal.dumps(obj, v)
|
|
with open(os_helper.TESTFN, 'wb') as f:
|
|
f.write(data + b'xxxx')
|
|
r, p = _testcapi.pymarshal_read_object_from_file(os_helper.TESTFN)
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
self.assertEqual(r, obj)
|
|
self.assertEqual(p, len(data))
|
|
|
|
with open(os_helper.TESTFN, 'wb') as f:
|
|
f.write(data[:1])
|
|
with self.assertRaises(EOFError):
|
|
_testcapi.pymarshal_read_object_from_file(os_helper.TESTFN)
|
|
os_helper.unlink(os_helper.TESTFN)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|