Python code coverage for Lib/test/test_marshal.py

#	count	content
1	n/a	from test import support
2	n/a	import array
3	n/a	import io
4	n/a	import marshal
5	n/a	import sys
6	n/a	import unittest
7	n/a	import os
8	n/a	import types
9	n/a
10	n/a	try:
11	n/a	import _testcapi
12	n/a	except ImportError:
13	n/a	_testcapi = None
14	n/a
15	n/a	class HelperMixin:
16	n/a	def helper(self, sample, *extra):
17	n/a	new = marshal.loads(marshal.dumps(sample, *extra))
18	n/a	self.assertEqual(sample, new)
19	n/a	try:
20	n/a	with open(support.TESTFN, "wb") as f:
21	n/a	marshal.dump(sample, f, *extra)
22	n/a	with open(support.TESTFN, "rb") as f:
23	n/a	new = marshal.load(f)
24	n/a	self.assertEqual(sample, new)
25	n/a	finally:
26	n/a	support.unlink(support.TESTFN)
27	n/a
28	n/a	class IntTestCase(unittest.TestCase, HelperMixin):
29	n/a	def test_ints(self):
30	n/a	# Test a range of Python ints larger than the machine word size.
31	n/a	n = sys.maxsize ** 2
32	n/a	while n:
33	n/a	for expected in (-n, n):
34	n/a	self.helper(expected)
35	n/a	n = n >> 1
36	n/a
37	n/a	def test_bool(self):
38	n/a	for b in (True, False):
39	n/a	self.helper(b)
40	n/a
41	n/a	class FloatTestCase(unittest.TestCase, HelperMixin):
42	n/a	def test_floats(self):
43	n/a	# Test a few floats
44	n/a	small = 1e-25
45	n/a	n = sys.maxsize * 3.7e250
46	n/a	while n > small:
47	n/a	for expected in (-n, n):
48	n/a	self.helper(float(expected))
49	n/a	n /= 123.4567
50	n/a
51	n/a	f = 0.0
52	n/a	s = marshal.dumps(f, 2)
53	n/a	got = marshal.loads(s)
54	n/a	self.assertEqual(f, got)
55	n/a	# and with version <= 1 (floats marshalled differently then)
56	n/a	s = marshal.dumps(f, 1)
57	n/a	got = marshal.loads(s)
58	n/a	self.assertEqual(f, got)
59	n/a
60	n/a	n = sys.maxsize * 3.7e-250
61	n/a	while n < small:
62	n/a	for expected in (-n, n):
63	n/a	f = float(expected)
64	n/a	self.helper(f)
65	n/a	self.helper(f, 1)
66	n/a	n *= 123.4567
67	n/a
68	n/a	class StringTestCase(unittest.TestCase, HelperMixin):
69	n/a	def test_unicode(self):
70	n/a	for s in ["", "Andr\xe8 Previn", "abc", " "*10000]:
71	n/a	self.helper(marshal.loads(marshal.dumps(s)))
72	n/a
73	n/a	def test_string(self):
74	n/a	for s in ["", "Andr\xe8 Previn", "abc", " "*10000]:
75	n/a	self.helper(s)
76	n/a
77	n/a	def test_bytes(self):
78	n/a	for s in [b"", b"Andr\xe8 Previn", b"abc", b" "*10000]:
79	n/a	self.helper(s)
80	n/a
81	n/a	class ExceptionTestCase(unittest.TestCase):
82	n/a	def test_exceptions(self):
83	n/a	new = marshal.loads(marshal.dumps(StopIteration))
84	n/a	self.assertEqual(StopIteration, new)
85	n/a
86	n/a	class CodeTestCase(unittest.TestCase):
87	n/a	def test_code(self):
88	n/a	co = ExceptionTestCase.test_exceptions.__code__
89	n/a	new = marshal.loads(marshal.dumps(co))
90	n/a	self.assertEqual(co, new)
91	n/a
92	n/a	def test_many_codeobjects(self):
93	n/a	# Issue2957: bad recursion count on code objects
94	n/a	count = 5000 # more than MAX_MARSHAL_STACK_DEPTH
95	n/a	codes = (ExceptionTestCase.test_exceptions.__code__,) * count
96	n/a	marshal.loads(marshal.dumps(codes))
97	n/a
98	n/a	def test_different_filenames(self):
99	n/a	co1 = compile("x", "f1", "exec")
100	n/a	co2 = compile("y", "f2", "exec")
101	n/a	co1, co2 = marshal.loads(marshal.dumps((co1, co2)))
102	n/a	self.assertEqual(co1.co_filename, "f1")
103	n/a	self.assertEqual(co2.co_filename, "f2")
104	n/a
105	n/a	@support.cpython_only
106	n/a	def test_same_filename_used(self):
107	n/a	s = """def f(): pass\ndef g(): pass"""
108	n/a	co = compile(s, "myfile", "exec")
109	n/a	co = marshal.loads(marshal.dumps(co))
110	n/a	for obj in co.co_consts:
111	n/a	if isinstance(obj, types.CodeType):
112	n/a	self.assertIs(co.co_filename, obj.co_filename)
113	n/a
114	n/a	class ContainerTestCase(unittest.TestCase, HelperMixin):
115	n/a	d = {'astring': 'foo@bar.baz.spam',
116	n/a	'afloat': 7283.43,
117	n/a	'anint': 2**20,
118	n/a	'ashortlong': 2,
119	n/a	'alist': ['.zyx.41'],
120	n/a	'atuple': ('.zyx.41',)*10,
121	n/a	'aboolean': False,
122	n/a	'aunicode': "Andr\xe8 Previn"
123	n/a	}
124	n/a
125	n/a	def test_dict(self):
126	n/a	self.helper(self.d)
127	n/a
128	n/a	def test_list(self):
129	n/a	self.helper(list(self.d.items()))
130	n/a
131	n/a	def test_tuple(self):
132	n/a	self.helper(tuple(self.d.keys()))
133	n/a
134	n/a	def test_sets(self):
135	n/a	for constructor in (set, frozenset):
136	n/a	self.helper(constructor(self.d.keys()))
137	n/a
138	n/a	@support.cpython_only
139	n/a	def test_empty_frozenset_singleton(self):
140	n/a	# marshal.loads() must reuse the empty frozenset singleton
141	n/a	obj = frozenset()
142	n/a	obj2 = marshal.loads(marshal.dumps(obj))
143	n/a	self.assertIs(obj2, obj)
144	n/a
145	n/a
146	n/a	class BufferTestCase(unittest.TestCase, HelperMixin):
147	n/a
148	n/a	def test_bytearray(self):
149	n/a	b = bytearray(b"abc")
150	n/a	self.helper(b)
151	n/a	new = marshal.loads(marshal.dumps(b))
152	n/a	self.assertEqual(type(new), bytes)
153	n/a
154	n/a	def test_memoryview(self):
155	n/a	b = memoryview(b"abc")
156	n/a	self.helper(b)
157	n/a	new = marshal.loads(marshal.dumps(b))
158	n/a	self.assertEqual(type(new), bytes)
159	n/a
160	n/a	def test_array(self):
161	n/a	a = array.array('B', b"abc")
162	n/a	new = marshal.loads(marshal.dumps(a))
163	n/a	self.assertEqual(new, b"abc")
164	n/a
165	n/a
166	n/a	class BugsTestCase(unittest.TestCase):
167	n/a	def test_bug_5888452(self):
168	n/a	# Simple-minded check for SF 588452: Debug build crashes
169	n/a	marshal.dumps([128] * 1000)
170	n/a
171	n/a	def test_patch_873224(self):
172	n/a	self.assertRaises(Exception, marshal.loads, '0')
173	n/a	self.assertRaises(Exception, marshal.loads, 'f')
174	n/a	self.assertRaises(Exception, marshal.loads, marshal.dumps(2**65)[:-1])
175	n/a
176	n/a	def test_version_argument(self):
177	n/a	# Python 2.4.0 crashes for any call to marshal.dumps(x, y)
178	n/a	self.assertEqual(marshal.loads(marshal.dumps(5, 0)), 5)
179	n/a	self.assertEqual(marshal.loads(marshal.dumps(5, 1)), 5)
180	n/a
181	n/a	def test_fuzz(self):
182	n/a	# simple test that it's at least not totally trivial to
183	n/a	# crash from bad marshal data
184	n/a	for c in [chr(i) for i in range(256)]:
185	n/a	try:
186	n/a	marshal.loads(c)
187	n/a	except Exception:
188	n/a	pass
189	n/a
190	n/a	def test_loads_2x_code(self):
191	n/a	s = b'c' + (b'X' * 44) + b'{' 2**20
192	n/a	self.assertRaises(ValueError, marshal.loads, s)
193	n/a
194	n/a	def test_loads_recursion(self):
195	n/a	s = b'c' + (b'X' * 45) + b'{' 2**20
196	n/a	self.assertRaises(ValueError, marshal.loads, s)
197	n/a
198	n/a	def test_recursion_limit(self):
199	n/a	# Create a deeply nested structure.
200	n/a	head = last = []
201	n/a	# The max stack depth should match the value in Python/marshal.c.
202	n/a	if os.name == 'nt' and hasattr(sys, 'gettotalrefcount'):
203	n/a	MAX_MARSHAL_STACK_DEPTH = 1000
204	n/a	else:
205	n/a	MAX_MARSHAL_STACK_DEPTH = 2000
206	n/a	for i in range(MAX_MARSHAL_STACK_DEPTH - 2):
207	n/a	last.append([0])
208	n/a	last = last[-1]
209	n/a
210	n/a	# Verify we don't blow out the stack with dumps/load.
211	n/a	data = marshal.dumps(head)
212	n/a	new_head = marshal.loads(data)
213	n/a	# Don't use == to compare objects, it can exceed the recursion limit.
214	n/a	self.assertEqual(len(new_head), len(head))
215	n/a	self.assertEqual(len(new_head[0]), len(head[0]))
216	n/a	self.assertEqual(len(new_head[-1]), len(head[-1]))
217	n/a
218	n/a	last.append([0])
219	n/a	self.assertRaises(ValueError, marshal.dumps, head)
220	n/a
221	n/a	def test_exact_type_match(self):
222	n/a	# Former bug:
223	n/a	# >>> class Int(int): pass
224	n/a	# >>> type(loads(dumps(Int())))
225	n/a	# <type 'int'>
226	n/a	for typ in (int, float, complex, tuple, list, dict, set, frozenset):
227	n/a	# Note: str subclasses are not tested because they get handled
228	n/a	# by marshal's routines for objects supporting the buffer API.
229	n/a	subtyp = type('subtyp', (typ,), {})
230	n/a	self.assertRaises(ValueError, marshal.dumps, subtyp())
231	n/a
232	n/a	# Issue #1792 introduced a change in how marshal increases the size of its
233	n/a	# internal buffer; this test ensures that the new code is exercised.
234	n/a	def test_large_marshal(self):
235	n/a	size = int(1e6)
236	n/a	testString = 'abc' * size
237	n/a	marshal.dumps(testString)
238	n/a
239	n/a	def test_invalid_longs(self):
240	n/a	# Issue #7019: marshal.loads shouldn't produce unnormalized PyLongs
241	n/a	invalid_string = b'l\x02\x00\x00\x00\x00\x00\x00\x00'
242	n/a	self.assertRaises(ValueError, marshal.loads, invalid_string)
243	n/a
244	n/a	def test_multiple_dumps_and_loads(self):
245	n/a	# Issue 12291: marshal.load() should be callable multiple times
246	n/a	# with interleaved data written by non-marshal code
247	n/a	# Adapted from a patch by Engelbert Gruber.
248	n/a	data = (1, 'abc', b'def', 1.0, (2, 'a', ['b', b'c']))
249	n/a	for interleaved in (b'', b'0123'):
250	n/a	ilen = len(interleaved)
251	n/a	positions = []
252	n/a	try:
253	n/a	with open(support.TESTFN, 'wb') as f:
254	n/a	for d in data:
255	n/a	marshal.dump(d, f)
256	n/a	if ilen:
257	n/a	f.write(interleaved)
258	n/a	positions.append(f.tell())
259	n/a	with open(support.TESTFN, 'rb') as f:
260	n/a	for i, d in enumerate(data):
261	n/a	self.assertEqual(d, marshal.load(f))
262	n/a	if ilen:
263	n/a	f.read(ilen)
264	n/a	self.assertEqual(positions[i], f.tell())
265	n/a	finally:
266	n/a	support.unlink(support.TESTFN)
267	n/a
268	n/a	def test_loads_reject_unicode_strings(self):
269	n/a	# Issue #14177: marshal.loads() should not accept unicode strings
270	n/a	unicode_string = 'T'
271	n/a	self.assertRaises(TypeError, marshal.loads, unicode_string)
272	n/a
273	n/a	def test_bad_reader(self):
274	n/a	class BadReader(io.BytesIO):
275	n/a	def readinto(self, buf):
276	n/a	n = super().readinto(buf)
277	n/a	if n is not None and n > 4:
278	n/a	n += 10**6
279	n/a	return n
280	n/a	for value in (1.0, 1j, b'0123456789', '0123456789'):
281	n/a	self.assertRaises(ValueError, marshal.load,
282	n/a	BadReader(marshal.dumps(value)))
283	n/a
284	n/a	def _test_eof(self):
285	n/a	data = marshal.dumps(("hello", "dolly", None))
286	n/a	for i in range(len(data)):
287	n/a	self.assertRaises(EOFError, marshal.loads, data[0: i])
288	n/a
289	n/a	LARGE_SIZE = 2**31
290	n/a	pointer_size = 8 if sys.maxsize > 0xFFFFFFFF else 4
291	n/a
292	n/a	class NullWriter:
293	n/a	def write(self, s):
294	n/a	pass
295	n/a
296	n/a	@unittest.skipIf(LARGE_SIZE > sys.maxsize, "test cannot run on 32-bit systems")
297	n/a	class LargeValuesTestCase(unittest.TestCase):
298	n/a	def check_unmarshallable(self, data):
299	n/a	self.assertRaises(ValueError, marshal.dump, data, NullWriter())
300	n/a
301	n/a	@support.bigmemtest(size=LARGE_SIZE, memuse=2, dry_run=False)
302	n/a	def test_bytes(self, size):
303	n/a	self.check_unmarshallable(b'x' * size)
304	n/a
305	n/a	@support.bigmemtest(size=LARGE_SIZE, memuse=2, dry_run=False)
306	n/a	def test_str(self, size):
307	n/a	self.check_unmarshallable('x' * size)
308	n/a
309	n/a	@support.bigmemtest(size=LARGE_SIZE, memuse=pointer_size + 1, dry_run=False)
310	n/a	def test_tuple(self, size):
311	n/a	self.check_unmarshallable((None,) * size)
312	n/a
313	n/a	@support.bigmemtest(size=LARGE_SIZE, memuse=pointer_size + 1, dry_run=False)
314	n/a	def test_list(self, size):
315	n/a	self.check_unmarshallable([None] * size)
316	n/a
317	n/a	@support.bigmemtest(size=LARGE_SIZE,
318	n/a	memuse=pointer_size*12 + sys.getsizeof(LARGE_SIZE-1),
319	n/a	dry_run=False)
320	n/a	def test_set(self, size):
321	n/a	self.check_unmarshallable(set(range(size)))
322	n/a
323	n/a	@support.bigmemtest(size=LARGE_SIZE,
324	n/a	memuse=pointer_size*12 + sys.getsizeof(LARGE_SIZE-1),
325	n/a	dry_run=False)
326	n/a	def test_frozenset(self, size):
327	n/a	self.check_unmarshallable(frozenset(range(size)))
328	n/a
329	n/a	@support.bigmemtest(size=LARGE_SIZE, memuse=2, dry_run=False)
330	n/a	def test_bytearray(self, size):
331	n/a	self.check_unmarshallable(bytearray(size))
332	n/a
333	n/a	def CollectObjectIDs(ids, obj):
334	n/a	"""Collect object ids seen in a structure"""
335	n/a	if id(obj) in ids:
336	n/a	return
337	n/a	ids.add(id(obj))
338	n/a	if isinstance(obj, (list, tuple, set, frozenset)):
339	n/a	for e in obj:
340	n/a	CollectObjectIDs(ids, e)
341	n/a	elif isinstance(obj, dict):
342	n/a	for k, v in obj.items():
343	n/a	CollectObjectIDs(ids, k)
344	n/a	CollectObjectIDs(ids, v)
345	n/a	return len(ids)
346	n/a
347	n/a	class InstancingTestCase(unittest.TestCase, HelperMixin):
348	n/a	intobj = 123321
349	n/a	floatobj = 1.2345
350	n/a	strobj = "abcde"*3
351	n/a	dictobj = {"hello":floatobj, "goodbye":floatobj, floatobj:"hello"}
352	n/a
353	n/a	def helper3(self, rsample, recursive=False, simple=False):
354	n/a	#we have two instances
355	n/a	sample = (rsample, rsample)
356	n/a
357	n/a	n0 = CollectObjectIDs(set(), sample)
358	n/a
359	n/a	s3 = marshal.dumps(sample, 3)
360	n/a	n3 = CollectObjectIDs(set(), marshal.loads(s3))
361	n/a
362	n/a	#same number of instances generated
363	n/a	self.assertEqual(n3, n0)
364	n/a
365	n/a	if not recursive:
366	n/a	#can compare with version 2
367	n/a	s2 = marshal.dumps(sample, 2)
368	n/a	n2 = CollectObjectIDs(set(), marshal.loads(s2))
369	n/a	#old format generated more instances
370	n/a	self.assertGreater(n2, n0)
371	n/a
372	n/a	#if complex objects are in there, old format is larger
373	n/a	if not simple:
374	n/a	self.assertGreater(len(s2), len(s3))
375	n/a	else:
376	n/a	self.assertGreaterEqual(len(s2), len(s3))
377	n/a
378	n/a	def testInt(self):
379	n/a	self.helper(self.intobj)
380	n/a	self.helper3(self.intobj, simple=True)
381	n/a
382	n/a	def testFloat(self):
383	n/a	self.helper(self.floatobj)
384	n/a	self.helper3(self.floatobj)
385	n/a
386	n/a	def testStr(self):
387	n/a	self.helper(self.strobj)
388	n/a	self.helper3(self.strobj)
389	n/a
390	n/a	def testDict(self):
391	n/a	self.helper(self.dictobj)
392	n/a	self.helper3(self.dictobj)
393	n/a
394	n/a	def testModule(self):
395	n/a	with open(__file__, "rb") as f:
396	n/a	code = f.read()
397	n/a	if __file__.endswith(".py"):
398	n/a	code = compile(code, __file__, "exec")
399	n/a	self.helper(code)
400	n/a	self.helper3(code)
401	n/a
402	n/a	def testRecursion(self):
403	n/a	d = dict(self.dictobj)
404	n/a	d["self"] = d
405	n/a	self.helper3(d, recursive=True)
406	n/a	l = [self.dictobj]
407	n/a	l.append(l)
408	n/a	self.helper3(l, recursive=True)
409	n/a
410	n/a	class CompatibilityTestCase(unittest.TestCase):
411	n/a	def _test(self, version):
412	n/a	with open(__file__, "rb") as f:
413	n/a	code = f.read()
414	n/a	if __file__.endswith(".py"):
415	n/a	code = compile(code, __file__, "exec")
416	n/a	data = marshal.dumps(code, version)
417	n/a	marshal.loads(data)
418	n/a
419	n/a	def test0To3(self):
420	n/a	self._test(0)
421	n/a
422	n/a	def test1To3(self):
423	n/a	self._test(1)
424	n/a
425	n/a	def test2To3(self):
426	n/a	self._test(2)
427	n/a
428	n/a	def test3To3(self):
429	n/a	self._test(3)
430	n/a
431	n/a	class InterningTestCase(unittest.TestCase, HelperMixin):
432	n/a	strobj = "this is an interned string"
433	n/a	strobj = sys.intern(strobj)
434	n/a
435	n/a	def testIntern(self):
436	n/a	s = marshal.loads(marshal.dumps(self.strobj))
437	n/a	self.assertEqual(s, self.strobj)
438	n/a	self.assertEqual(id(s), id(self.strobj))
439	n/a	s2 = sys.intern(s)
440	n/a	self.assertEqual(id(s2), id(s))
441	n/a
442	n/a	def testNoIntern(self):
443	n/a	s = marshal.loads(marshal.dumps(self.strobj, 2))
444	n/a	self.assertEqual(s, self.strobj)
445	n/a	self.assertNotEqual(id(s), id(self.strobj))
446	n/a	s2 = sys.intern(s)
447	n/a	self.assertNotEqual(id(s2), id(s))
448	n/a
449	n/a	@support.cpython_only
450	n/a	@unittest.skipUnless(_testcapi, 'requires _testcapi')
451	n/a	class CAPI_TestCase(unittest.TestCase, HelperMixin):
452	n/a
453	n/a	def test_write_long_to_file(self):
454	n/a	for v in range(marshal.version + 1):
455	n/a	_testcapi.pymarshal_write_long_to_file(0x12345678, support.TESTFN, v)
456	n/a	with open(support.TESTFN, 'rb') as f:
457	n/a	data = f.read()
458	n/a	support.unlink(support.TESTFN)
459	n/a	self.assertEqual(data, b'\x78\x56\x34\x12')
460	n/a
461	n/a	def test_write_object_to_file(self):
462	n/a	obj = ('\u20ac', b'abc', 123, 45.6, 7+8j, 'long line '*1000)
463	n/a	for v in range(marshal.version + 1):
464	n/a	_testcapi.pymarshal_write_object_to_file(obj, support.TESTFN, v)
465	n/a	with open(support.TESTFN, 'rb') as f:
466	n/a	data = f.read()
467	n/a	support.unlink(support.TESTFN)
468	n/a	self.assertEqual(marshal.loads(data), obj)
469	n/a
470	n/a	def test_read_short_from_file(self):
471	n/a	with open(support.TESTFN, 'wb') as f:
472	n/a	f.write(b'\x34\x12xxxx')
473	n/a	r, p = _testcapi.pymarshal_read_short_from_file(support.TESTFN)
474	n/a	support.unlink(support.TESTFN)
475	n/a	self.assertEqual(r, 0x1234)
476	n/a	self.assertEqual(p, 2)
477	n/a
478	n/a	with open(support.TESTFN, 'wb') as f:
479	n/a	f.write(b'\x12')
480	n/a	with self.assertRaises(EOFError):
481	n/a	_testcapi.pymarshal_read_short_from_file(support.TESTFN)
482	n/a	support.unlink(support.TESTFN)
483	n/a
484	n/a	def test_read_long_from_file(self):
485	n/a	with open(support.TESTFN, 'wb') as f:
486	n/a	f.write(b'\x78\x56\x34\x12xxxx')
487	n/a	r, p = _testcapi.pymarshal_read_long_from_file(support.TESTFN)
488	n/a	support.unlink(support.TESTFN)
489	n/a	self.assertEqual(r, 0x12345678)
490	n/a	self.assertEqual(p, 4)
491	n/a
492	n/a	with open(support.TESTFN, 'wb') as f:
493	n/a	f.write(b'\x56\x34\x12')
494	n/a	with self.assertRaises(EOFError):
495	n/a	_testcapi.pymarshal_read_long_from_file(support.TESTFN)
496	n/a	support.unlink(support.TESTFN)
497	n/a
498	n/a	def test_read_last_object_from_file(self):
499	n/a	obj = ('\u20ac', b'abc', 123, 45.6, 7+8j)
500	n/a	for v in range(marshal.version + 1):
501	n/a	data = marshal.dumps(obj, v)
502	n/a	with open(support.TESTFN, 'wb') as f:
503	n/a	f.write(data + b'xxxx')
504	n/a	r, p = _testcapi.pymarshal_read_last_object_from_file(support.TESTFN)
505	n/a	support.unlink(support.TESTFN)
506	n/a	self.assertEqual(r, obj)
507	n/a
508	n/a	with open(support.TESTFN, 'wb') as f:
509	n/a	f.write(data[:1])
510	n/a	with self.assertRaises(EOFError):
511	n/a	_testcapi.pymarshal_read_last_object_from_file(support.TESTFN)
512	n/a	support.unlink(support.TESTFN)
513	n/a
514	n/a	def test_read_object_from_file(self):
515	n/a	obj = ('\u20ac', b'abc', 123, 45.6, 7+8j)
516	n/a	for v in range(marshal.version + 1):
517	n/a	data = marshal.dumps(obj, v)
518	n/a	with open(support.TESTFN, 'wb') as f:
519	n/a	f.write(data + b'xxxx')
520	n/a	r, p = _testcapi.pymarshal_read_object_from_file(support.TESTFN)
521	n/a	support.unlink(support.TESTFN)
522	n/a	self.assertEqual(r, obj)
523	n/a	self.assertEqual(p, len(data))
524	n/a
525	n/a	with open(support.TESTFN, 'wb') as f:
526	n/a	f.write(data[:1])
527	n/a	with self.assertRaises(EOFError):
528	n/a	_testcapi.pymarshal_read_object_from_file(support.TESTFN)
529	n/a	support.unlink(support.TESTFN)
530	n/a
531	n/a
532	n/a	if __name__ == "__main__":
533	n/a	unittest.main()