| from test import support |
| import array |
| import io |
| import marshal |
| import sys |
| import unittest |
| import os |
| import types |
| |
| try: |
| import _testcapi |
| except ImportError: |
| _testcapi = None |
| |
| class HelperMixin: |
| def helper(self, sample, *extra): |
| new = marshal.loads(marshal.dumps(sample, *extra)) |
| self.assertEqual(sample, new) |
| try: |
| with open(support.TESTFN, "wb") as f: |
| marshal.dump(sample, f, *extra) |
| with open(support.TESTFN, "rb") as f: |
| new = marshal.load(f) |
| self.assertEqual(sample, new) |
| finally: |
| support.unlink(support.TESTFN) |
| |
| class IntTestCase(unittest.TestCase, HelperMixin): |
| def test_ints(self): |
| # Test a range of Python ints larger than the machine word size. |
| n = sys.maxsize ** 2 |
| while n: |
| for expected in (-n, n): |
| self.helper(expected) |
| n = n >> 1 |
| |
| def test_bool(self): |
| for b in (True, False): |
| self.helper(b) |
| |
| class FloatTestCase(unittest.TestCase, HelperMixin): |
| def test_floats(self): |
| # Test a few floats |
| small = 1e-25 |
| n = sys.maxsize * 3.7e250 |
| while n > small: |
| for expected in (-n, n): |
| self.helper(float(expected)) |
| n /= 123.4567 |
| |
| f = 0.0 |
| s = marshal.dumps(f, 2) |
| got = marshal.loads(s) |
| self.assertEqual(f, got) |
| # and with version <= 1 (floats marshalled differently then) |
| s = marshal.dumps(f, 1) |
| got = marshal.loads(s) |
| self.assertEqual(f, got) |
| |
| n = sys.maxsize * 3.7e-250 |
| while n < small: |
| for expected in (-n, n): |
| f = float(expected) |
| self.helper(f) |
| self.helper(f, 1) |
| n *= 123.4567 |
| |
| class StringTestCase(unittest.TestCase, HelperMixin): |
| def test_unicode(self): |
| for s in ["", "Andr\xe8 Previn", "abc", " "*10000]: |
| self.helper(marshal.loads(marshal.dumps(s))) |
| |
| def test_string(self): |
| for s in ["", "Andr\xe8 Previn", "abc", " "*10000]: |
| self.helper(s) |
| |
| def test_bytes(self): |
| for s in [b"", b"Andr\xe8 Previn", b"abc", b" "*10000]: |
| self.helper(s) |
| |
| class ExceptionTestCase(unittest.TestCase): |
| def test_exceptions(self): |
| new = marshal.loads(marshal.dumps(StopIteration)) |
| self.assertEqual(StopIteration, new) |
| |
| class CodeTestCase(unittest.TestCase): |
| def test_code(self): |
| co = ExceptionTestCase.test_exceptions.__code__ |
| new = marshal.loads(marshal.dumps(co)) |
| self.assertEqual(co, new) |
| |
| def test_many_codeobjects(self): |
| # Issue2957: bad recursion count on code objects |
| count = 5000 # more than MAX_MARSHAL_STACK_DEPTH |
| codes = (ExceptionTestCase.test_exceptions.__code__,) * count |
| marshal.loads(marshal.dumps(codes)) |
| |
| def test_different_filenames(self): |
| co1 = compile("x", "f1", "exec") |
| co2 = compile("y", "f2", "exec") |
| co1, co2 = marshal.loads(marshal.dumps((co1, co2))) |
| self.assertEqual(co1.co_filename, "f1") |
| self.assertEqual(co2.co_filename, "f2") |
| |
| @support.cpython_only |
| def test_same_filename_used(self): |
| s = """def f(): pass\ndef g(): pass""" |
| co = compile(s, "myfile", "exec") |
| co = marshal.loads(marshal.dumps(co)) |
| for obj in co.co_consts: |
| if isinstance(obj, types.CodeType): |
| self.assertIs(co.co_filename, obj.co_filename) |
| |
| class ContainerTestCase(unittest.TestCase, HelperMixin): |
| d = {'astring': 'foo@bar.baz.spam', |
| 'afloat': 7283.43, |
| 'anint': 2**20, |
| 'ashortlong': 2, |
| 'alist': ['.zyx.41'], |
| 'atuple': ('.zyx.41',)*10, |
| 'aboolean': False, |
| 'aunicode': "Andr\xe8 Previn" |
| } |
| |
| def test_dict(self): |
| self.helper(self.d) |
| |
| def test_list(self): |
| self.helper(list(self.d.items())) |
| |
| def test_tuple(self): |
| self.helper(tuple(self.d.keys())) |
| |
| def test_sets(self): |
| for constructor in (set, frozenset): |
| self.helper(constructor(self.d.keys())) |
| |
| |
| class BufferTestCase(unittest.TestCase, HelperMixin): |
| |
| def test_bytearray(self): |
| b = bytearray(b"abc") |
| self.helper(b) |
| new = marshal.loads(marshal.dumps(b)) |
| self.assertEqual(type(new), bytes) |
| |
| def test_memoryview(self): |
| b = memoryview(b"abc") |
| self.helper(b) |
| new = marshal.loads(marshal.dumps(b)) |
| self.assertEqual(type(new), bytes) |
| |
| def test_array(self): |
| a = array.array('B', b"abc") |
| new = marshal.loads(marshal.dumps(a)) |
| self.assertEqual(new, b"abc") |
| |
| |
| class BugsTestCase(unittest.TestCase): |
| def test_bug_5888452(self): |
| # Simple-minded check for SF 588452: Debug build crashes |
| marshal.dumps([128] * 1000) |
| |
| def test_patch_873224(self): |
| self.assertRaises(Exception, marshal.loads, '0') |
| self.assertRaises(Exception, marshal.loads, 'f') |
| self.assertRaises(Exception, marshal.loads, marshal.dumps(2**65)[:-1]) |
| |
| def test_version_argument(self): |
| # Python 2.4.0 crashes for any call to marshal.dumps(x, y) |
| self.assertEqual(marshal.loads(marshal.dumps(5, 0)), 5) |
| self.assertEqual(marshal.loads(marshal.dumps(5, 1)), 5) |
| |
| def test_fuzz(self): |
| # simple test that it's at least not *totally* trivial to |
| # crash from bad marshal data |
| for c in [chr(i) for i in range(256)]: |
| try: |
| marshal.loads(c) |
| except Exception: |
| pass |
| |
| def test_loads_2x_code(self): |
| s = b'c' + (b'X' * 4*4) + b'{' * 2**20 |
| self.assertRaises(ValueError, marshal.loads, s) |
| |
| def test_loads_recursion(self): |
| s = b'c' + (b'X' * 4*5) + b'{' * 2**20 |
| self.assertRaises(ValueError, marshal.loads, s) |
| |
| def test_recursion_limit(self): |
| # Create a deeply nested structure. |
| head = last = [] |
| # The max stack depth should match the value in Python/marshal.c. |
| if os.name == 'nt' and hasattr(sys, 'gettotalrefcount'): |
| MAX_MARSHAL_STACK_DEPTH = 1000 |
| else: |
| MAX_MARSHAL_STACK_DEPTH = 2000 |
| for i in range(MAX_MARSHAL_STACK_DEPTH - 2): |
| last.append([0]) |
| last = last[-1] |
| |
| # Verify we don't blow out the stack with dumps/load. |
| data = marshal.dumps(head) |
| new_head = marshal.loads(data) |
| # Don't use == to compare objects, it can exceed the recursion limit. |
| self.assertEqual(len(new_head), len(head)) |
| self.assertEqual(len(new_head[0]), len(head[0])) |
| self.assertEqual(len(new_head[-1]), len(head[-1])) |
| |
| last.append([0]) |
| self.assertRaises(ValueError, marshal.dumps, head) |
| |
| def test_exact_type_match(self): |
| # Former bug: |
| # >>> class Int(int): pass |
| # >>> type(loads(dumps(Int()))) |
| # <type 'int'> |
| for typ in (int, float, complex, tuple, list, dict, set, frozenset): |
| # Note: str subclasses are not tested because they get handled |
| # by marshal's routines for objects supporting the buffer API. |
| subtyp = type('subtyp', (typ,), {}) |
| self.assertRaises(ValueError, marshal.dumps, subtyp()) |
| |
| # Issue #1792 introduced a change in how marshal increases the size of its |
| # internal buffer; this test ensures that the new code is exercised. |
| def test_large_marshal(self): |
| size = int(1e6) |
| testString = 'abc' * size |
| marshal.dumps(testString) |
| |
| def test_invalid_longs(self): |
| # Issue #7019: marshal.loads shouldn't produce unnormalized PyLongs |
| invalid_string = b'l\x02\x00\x00\x00\x00\x00\x00\x00' |
| self.assertRaises(ValueError, marshal.loads, invalid_string) |
| |
| def test_multiple_dumps_and_loads(self): |
| # Issue 12291: marshal.load() should be callable multiple times |
| # with interleaved data written by non-marshal code |
| # Adapted from a patch by Engelbert Gruber. |
| data = (1, 'abc', b'def', 1.0, (2, 'a', ['b', b'c'])) |
| for interleaved in (b'', b'0123'): |
| ilen = len(interleaved) |
| positions = [] |
| try: |
| with open(support.TESTFN, 'wb') as f: |
| for d in data: |
| marshal.dump(d, f) |
| if ilen: |
| f.write(interleaved) |
| positions.append(f.tell()) |
| with open(support.TESTFN, 'rb') as f: |
| for i, d in enumerate(data): |
| self.assertEqual(d, marshal.load(f)) |
| if ilen: |
| f.read(ilen) |
| self.assertEqual(positions[i], f.tell()) |
| finally: |
| support.unlink(support.TESTFN) |
| |
| def test_loads_reject_unicode_strings(self): |
| # Issue #14177: marshal.loads() should not accept unicode strings |
| unicode_string = 'T' |
| self.assertRaises(TypeError, marshal.loads, unicode_string) |
| |
| def test_bad_reader(self): |
| class BadReader(io.BytesIO): |
| def readinto(self, buf): |
| n = super().readinto(buf) |
| if n is not None and n > 4: |
| n += 10**6 |
| return n |
| for value in (1.0, 1j, b'0123456789', '0123456789'): |
| self.assertRaises(ValueError, marshal.load, |
| BadReader(marshal.dumps(value))) |
| |
| def _test_eof(self): |
| data = marshal.dumps(("hello", "dolly", None)) |
| for i in range(len(data)): |
| self.assertRaises(EOFError, marshal.loads, data[0: i]) |
| |
| LARGE_SIZE = 2**31 |
| pointer_size = 8 if sys.maxsize > 0xFFFFFFFF else 4 |
| |
| class NullWriter: |
| def write(self, s): |
| pass |
| |
| @unittest.skipIf(LARGE_SIZE > sys.maxsize, "test cannot run on 32-bit systems") |
| class LargeValuesTestCase(unittest.TestCase): |
| def check_unmarshallable(self, data): |
| self.assertRaises(ValueError, marshal.dump, data, NullWriter()) |
| |
| @support.bigmemtest(size=LARGE_SIZE, memuse=2, dry_run=False) |
| def test_bytes(self, size): |
| self.check_unmarshallable(b'x' * size) |
| |
| @support.bigmemtest(size=LARGE_SIZE, memuse=2, dry_run=False) |
| def test_str(self, size): |
| self.check_unmarshallable('x' * size) |
| |
| @support.bigmemtest(size=LARGE_SIZE, memuse=pointer_size + 1, dry_run=False) |
| def test_tuple(self, size): |
| self.check_unmarshallable((None,) * size) |
| |
| @support.bigmemtest(size=LARGE_SIZE, memuse=pointer_size + 1, dry_run=False) |
| def test_list(self, size): |
| self.check_unmarshallable([None] * size) |
| |
| @support.bigmemtest(size=LARGE_SIZE, |
| memuse=pointer_size*12 + sys.getsizeof(LARGE_SIZE-1), |
| dry_run=False) |
| def test_set(self, size): |
| self.check_unmarshallable(set(range(size))) |
| |
| @support.bigmemtest(size=LARGE_SIZE, |
| memuse=pointer_size*12 + sys.getsizeof(LARGE_SIZE-1), |
| dry_run=False) |
| def test_frozenset(self, size): |
| self.check_unmarshallable(frozenset(range(size))) |
| |
| @support.bigmemtest(size=LARGE_SIZE, memuse=2, dry_run=False) |
| def test_bytearray(self, size): |
| self.check_unmarshallable(bytearray(size)) |
| |
| def CollectObjectIDs(ids, obj): |
| """Collect object ids seen in a structure""" |
| if id(obj) in ids: |
| return |
| ids.add(id(obj)) |
| if isinstance(obj, (list, tuple, set, frozenset)): |
| for e in obj: |
| CollectObjectIDs(ids, e) |
| elif isinstance(obj, dict): |
| for k, v in obj.items(): |
| CollectObjectIDs(ids, k) |
| CollectObjectIDs(ids, v) |
| return len(ids) |
| |
| class InstancingTestCase(unittest.TestCase, HelperMixin): |
| intobj = 123321 |
| floatobj = 1.2345 |
| strobj = "abcde"*3 |
| dictobj = {"hello":floatobj, "goodbye":floatobj, floatobj:"hello"} |
| |
| def helper3(self, rsample, recursive=False, simple=False): |
| #we have two instances |
| sample = (rsample, rsample) |
| |
| n0 = CollectObjectIDs(set(), sample) |
| |
| s3 = marshal.dumps(sample, 3) |
| n3 = CollectObjectIDs(set(), marshal.loads(s3)) |
| |
| #same number of instances generated |
| self.assertEqual(n3, n0) |
| |
| if not recursive: |
| #can compare with version 2 |
| s2 = marshal.dumps(sample, 2) |
| n2 = CollectObjectIDs(set(), marshal.loads(s2)) |
| #old format generated more instances |
| self.assertGreater(n2, n0) |
| |
| #if complex objects are in there, old format is larger |
| if not simple: |
| self.assertGreater(len(s2), len(s3)) |
| else: |
| self.assertGreaterEqual(len(s2), len(s3)) |
| |
| def testInt(self): |
| self.helper(self.intobj) |
| self.helper3(self.intobj, simple=True) |
| |
| def testFloat(self): |
| self.helper(self.floatobj) |
| self.helper3(self.floatobj) |
| |
| def testStr(self): |
| self.helper(self.strobj) |
| self.helper3(self.strobj) |
| |
| def testDict(self): |
| self.helper(self.dictobj) |
| self.helper3(self.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): |
| d = dict(self.dictobj) |
| d["self"] = d |
| self.helper3(d, recursive=True) |
| l = [self.dictobj] |
| 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, support.TESTFN, v) |
| with open(support.TESTFN, 'rb') as f: |
| data = f.read() |
| support.unlink(support.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, support.TESTFN, v) |
| with open(support.TESTFN, 'rb') as f: |
| data = f.read() |
| support.unlink(support.TESTFN) |
| self.assertEqual(marshal.loads(data), obj) |
| |
| def test_read_short_from_file(self): |
| with open(support.TESTFN, 'wb') as f: |
| f.write(b'\x34\x12xxxx') |
| r, p = _testcapi.pymarshal_read_short_from_file(support.TESTFN) |
| support.unlink(support.TESTFN) |
| self.assertEqual(r, 0x1234) |
| self.assertEqual(p, 2) |
| |
| with open(support.TESTFN, 'wb') as f: |
| f.write(b'\x12') |
| with self.assertRaises(EOFError): |
| _testcapi.pymarshal_read_short_from_file(support.TESTFN) |
| support.unlink(support.TESTFN) |
| |
| def test_read_long_from_file(self): |
| with open(support.TESTFN, 'wb') as f: |
| f.write(b'\x78\x56\x34\x12xxxx') |
| r, p = _testcapi.pymarshal_read_long_from_file(support.TESTFN) |
| support.unlink(support.TESTFN) |
| self.assertEqual(r, 0x12345678) |
| self.assertEqual(p, 4) |
| |
| with open(support.TESTFN, 'wb') as f: |
| f.write(b'\x56\x34\x12') |
| with self.assertRaises(EOFError): |
| _testcapi.pymarshal_read_long_from_file(support.TESTFN) |
| support.unlink(support.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(support.TESTFN, 'wb') as f: |
| f.write(data + b'xxxx') |
| r, p = _testcapi.pymarshal_read_last_object_from_file(support.TESTFN) |
| support.unlink(support.TESTFN) |
| self.assertEqual(r, obj) |
| |
| with open(support.TESTFN, 'wb') as f: |
| f.write(data[:1]) |
| with self.assertRaises(EOFError): |
| _testcapi.pymarshal_read_last_object_from_file(support.TESTFN) |
| support.unlink(support.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(support.TESTFN, 'wb') as f: |
| f.write(data + b'xxxx') |
| r, p = _testcapi.pymarshal_read_object_from_file(support.TESTFN) |
| support.unlink(support.TESTFN) |
| self.assertEqual(r, obj) |
| self.assertEqual(p, len(data)) |
| |
| with open(support.TESTFN, 'wb') as f: |
| f.write(data[:1]) |
| with self.assertRaises(EOFError): |
| _testcapi.pymarshal_read_object_from_file(support.TESTFN) |
| support.unlink(support.TESTFN) |
| |
| |
| if __name__ == "__main__": |
| unittest.main() |