Repository navigation
Expand file tree
/
Copy pathtest_pyexpat.py
More file actions
737 lines (611 loc) · 26.8 KB
/
Copy pathtest_pyexpat.py
File metadata and controls
737 lines (611 loc) · 26.8 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
# XXX TypeErrors on calling handlers, or on bad return values from a
# handler, are obscure and unhelpful.
from io import BytesIO
import os
import platform
import sys
import sysconfig
import unittest
import traceback
from xml.parsers import expat
from xml.parsers.expat import errors
from test.support import sortdict, is_emscripten
class SetAttributeTest(unittest.TestCase):
def setUp(self):
self.parser = expat.ParserCreate(namespace_separator='!')
def test_buffer_text(self):
self.assertIs(self.parser.buffer_text, False)
for x in 0, 1, 2, 0:
self.parser.buffer_text = x
self.assertIs(self.parser.buffer_text, bool(x))
def test_namespace_prefixes(self):
self.assertIs(self.parser.namespace_prefixes, False)
for x in 0, 1, 2, 0:
self.parser.namespace_prefixes = x
self.assertIs(self.parser.namespace_prefixes, bool(x))
def test_ordered_attributes(self):
self.assertIs(self.parser.ordered_attributes, False)
for x in 0, 1, 2, 0:
self.parser.ordered_attributes = x
self.assertIs(self.parser.ordered_attributes, bool(x))
def test_specified_attributes(self):
self.assertIs(self.parser.specified_attributes, False)
for x in 0, 1, 2, 0:
self.parser.specified_attributes = x
self.assertIs(self.parser.specified_attributes, bool(x))
def test_invalid_attributes(self):
with self.assertRaises(AttributeError):
self.parser.returns_unicode = 1
with self.assertRaises(AttributeError):
self.parser.returns_unicode
# Issue #25019
self.assertRaises(TypeError, setattr, self.parser, range(0xF), 0)
self.assertRaises(TypeError, self.parser.__setattr__, range(0xF), 0)
self.assertRaises(TypeError, getattr, self.parser, range(0xF))
data = b'''\
<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
<?xml-stylesheet href="stylesheet.css"?>
<!-- comment data -->
<!DOCTYPE quotations SYSTEM "quotations.dtd" [
<!ELEMENT root ANY>
<!ATTLIST root attr1 CDATA #REQUIRED attr2 CDATA #IMPLIED>
<!NOTATION notation SYSTEM "notation.jpeg">
<!ENTITY acirc "â">
<!ENTITY external_entity SYSTEM "entity.file">
<!ENTITY unparsed_entity SYSTEM "entity.file" NDATA notation>
%unparsed_entity;
]>
<root attr1="value1" attr2="value2ὀ">
<myns:subelement xmlns:myns="http://www.python.org/namespace">
Contents of subelements
</myns:subelement>
<sub2><![CDATA[contents of CDATA section]]></sub2>
&external_entity;
&skipped_entity;
\xb5
</root>
'''
# Produce UTF-8 output
class ParseTest(unittest.TestCase):
class Outputter:
def __init__(self):
self.out = []
def StartElementHandler(self, name, attrs):
self.out.append('Start element: ' + repr(name) + ' ' +
sortdict(attrs))
def EndElementHandler(self, name):
self.out.append('End element: ' + repr(name))
def CharacterDataHandler(self, data):
data = data.strip()
if data:
self.out.append('Character data: ' + repr(data))
def ProcessingInstructionHandler(self, target, data):
self.out.append('PI: ' + repr(target) + ' ' + repr(data))
def StartNamespaceDeclHandler(self, prefix, uri):
self.out.append('NS decl: ' + repr(prefix) + ' ' + repr(uri))
def EndNamespaceDeclHandler(self, prefix):
self.out.append('End of NS decl: ' + repr(prefix))
def StartCdataSectionHandler(self):
self.out.append('Start of CDATA section')
def EndCdataSectionHandler(self):
self.out.append('End of CDATA section')
def CommentHandler(self, text):
self.out.append('Comment: ' + repr(text))
def NotationDeclHandler(self, *args):
name, base, sysid, pubid = args
self.out.append('Notation declared: %s' %(args,))
def UnparsedEntityDeclHandler(self, *args):
entityName, base, systemId, publicId, notationName = args
self.out.append('Unparsed entity decl: %s' %(args,))
def NotStandaloneHandler(self):
self.out.append('Not standalone')
return 1
def ExternalEntityRefHandler(self, *args):
context, base, sysId, pubId = args
self.out.append('External entity ref: %s' %(args[1:],))
return 1
def StartDoctypeDeclHandler(self, *args):
self.out.append(('Start doctype', args))
return 1
def EndDoctypeDeclHandler(self):
self.out.append("End doctype")
return 1
def EntityDeclHandler(self, *args):
self.out.append(('Entity declaration', args))
return 1
def XmlDeclHandler(self, *args):
self.out.append(('XML declaration', args))
return 1
def ElementDeclHandler(self, *args):
self.out.append(('Element declaration', args))
return 1
def AttlistDeclHandler(self, *args):
self.out.append(('Attribute list declaration', args))
return 1
def SkippedEntityHandler(self, *args):
self.out.append(("Skipped entity", args))
return 1
def DefaultHandler(self, userData):
pass
def DefaultHandlerExpand(self, userData):
pass
handler_names = [
'StartElementHandler', 'EndElementHandler', 'CharacterDataHandler',
'ProcessingInstructionHandler', 'UnparsedEntityDeclHandler',
'NotationDeclHandler', 'StartNamespaceDeclHandler',
'EndNamespaceDeclHandler', 'CommentHandler',
'StartCdataSectionHandler', 'EndCdataSectionHandler', 'DefaultHandler',
'DefaultHandlerExpand', 'NotStandaloneHandler',
'ExternalEntityRefHandler', 'StartDoctypeDeclHandler',
'EndDoctypeDeclHandler', 'EntityDeclHandler', 'XmlDeclHandler',
'ElementDeclHandler', 'AttlistDeclHandler', 'SkippedEntityHandler',
]
def _hookup_callbacks(self, parser, handler):
"""
Set each of the callbacks defined on handler and named in
self.handler_names on the given parser.
"""
for name in self.handler_names:
setattr(parser, name, getattr(handler, name))
def _verify_parse_output(self, operations):
expected_operations = [
('XML declaration', ('1.0', 'iso-8859-1', 0)),
'PI: \'xml-stylesheet\' \'href="stylesheet.css"\'',
"Comment: ' comment data '",
"Not standalone",
("Start doctype", ('quotations', 'quotations.dtd', None, 1)),
('Element declaration', ('root', (2, 0, None, ()))),
('Attribute list declaration', ('root', 'attr1', 'CDATA', None,
1)),
('Attribute list declaration', ('root', 'attr2', 'CDATA', None,
0)),
"Notation declared: ('notation', None, 'notation.jpeg', None)",
('Entity declaration', ('acirc', 0, '\xe2', None, None, None, None)),
('Entity declaration', ('external_entity', 0, None, None,
'entity.file', None, None)),
"Unparsed entity decl: ('unparsed_entity', None, 'entity.file', None, 'notation')",
"Not standalone",
"End doctype",
"Start element: 'root' {'attr1': 'value1', 'attr2': 'value2\u1f40'}",
"NS decl: 'myns' 'http://www.python.org/namespace'",
"Start element: 'http://www.python.org/namespace!subelement' {}",
"Character data: 'Contents of subelements'",
"End element: 'http://www.python.org/namespace!subelement'",
"End of NS decl: 'myns'",
"Start element: 'sub2' {}",
'Start of CDATA section',
"Character data: 'contents of CDATA section'",
'End of CDATA section',
"End element: 'sub2'",
"External entity ref: (None, 'entity.file', None)",
('Skipped entity', ('skipped_entity', 0)),
"Character data: '\xb5'",
"End element: 'root'",
]
for operation, expected_operation in zip(operations, expected_operations):
self.assertEqual(operation, expected_operation)
def test_parse_bytes(self):
out = self.Outputter()
parser = expat.ParserCreate(namespace_separator='!')
self._hookup_callbacks(parser, out)
parser.Parse(data, True)
operations = out.out
self._verify_parse_output(operations)
# Issue #6697.
self.assertRaises(AttributeError, getattr, parser, '\uD800')
def test_parse_str(self):
out = self.Outputter()
parser = expat.ParserCreate(namespace_separator='!')
self._hookup_callbacks(parser, out)
parser.Parse(data.decode('iso-8859-1'), True)
operations = out.out
self._verify_parse_output(operations)
def test_parse_file(self):
# Try parsing a file
out = self.Outputter()
parser = expat.ParserCreate(namespace_separator='!')
self._hookup_callbacks(parser, out)
file = BytesIO(data)
parser.ParseFile(file)
operations = out.out
self._verify_parse_output(operations)
def test_parse_again(self):
parser = expat.ParserCreate()
file = BytesIO(data)
parser.ParseFile(file)
# Issue 6676: ensure a meaningful exception is raised when attempting
# to parse more than one XML document per xmlparser instance,
# a limitation of the Expat library.
with self.assertRaises(expat.error) as cm:
parser.ParseFile(file)
self.assertEqual(expat.ErrorString(cm.exception.code),
expat.errors.XML_ERROR_FINISHED)
class NamespaceSeparatorTest(unittest.TestCase):
def test_legal(self):
# Tests that make sure we get errors when the namespace_separator value
# is illegal, and that we don't for good values:
expat.ParserCreate()
expat.ParserCreate(namespace_separator=None)
expat.ParserCreate(namespace_separator=' ')
def test_illegal(self):
try:
expat.ParserCreate(namespace_separator=42)
self.fail()
except TypeError as e:
self.assertEqual(str(e),
"ParserCreate() argument 'namespace_separator' must be str or None, not int")
try:
expat.ParserCreate(namespace_separator='too long')
self.fail()
except ValueError as e:
self.assertEqual(str(e),
'namespace_separator must be at most one character, omitted, or None')
def test_zero_length(self):
# ParserCreate() needs to accept a namespace_separator of zero length
# to satisfy the requirements of RDF applications that are required
# to simply glue together the namespace URI and the localname. Though
# considered a wart of the RDF specifications, it needs to be supported.
#
# See XML-SIG mailing list thread starting with
# http://mail.python.org/pipermail/xml-sig/2001-April/005202.html
#
expat.ParserCreate(namespace_separator='') # too short
class InterningTest(unittest.TestCase):
def test(self):
# Test the interning machinery.
p = expat.ParserCreate()
L = []
def collector(name, *args):
L.append(name)
p.StartElementHandler = collector
p.EndElementHandler = collector
p.Parse(b"<e> <e/> <e></e> </e>", True)
tag = L[0]
self.assertEqual(len(L), 6)
for entry in L:
# L should have the same string repeated over and over.
self.assertTrue(tag is entry)
def test_issue9402(self):
# create an ExternalEntityParserCreate with buffer text
class ExternalOutputter:
def __init__(self, parser):
self.parser = parser
self.parser_result = None
def ExternalEntityRefHandler(self, context, base, sysId, pubId):
external_parser = self.parser.ExternalEntityParserCreate("")
self.parser_result = external_parser.Parse(b"", True)
return 1
parser = expat.ParserCreate(namespace_separator='!')
parser.buffer_text = 1
out = ExternalOutputter(parser)
parser.ExternalEntityRefHandler = out.ExternalEntityRefHandler
parser.Parse(data, True)
self.assertEqual(out.parser_result, 1)
class BufferTextTest(unittest.TestCase):
def setUp(self):
self.stuff = []
self.parser = expat.ParserCreate()
self.parser.buffer_text = 1
self.parser.CharacterDataHandler = self.CharacterDataHandler
def check(self, expected, label):
self.assertEqual(self.stuff, expected,
"%s\nstuff = %r\nexpected = %r"
% (label, self.stuff, map(str, expected)))
def CharacterDataHandler(self, text):
self.stuff.append(text)
def StartElementHandler(self, name, attrs):
self.stuff.append("<%s>" % name)
bt = attrs.get("buffer-text")
if bt == "yes":
self.parser.buffer_text = 1
elif bt == "no":
self.parser.buffer_text = 0
def EndElementHandler(self, name):
self.stuff.append("</%s>" % name)
def CommentHandler(self, data):
self.stuff.append("<!--%s-->" % data)
def setHandlers(self, handlers=[]):
for name in handlers:
setattr(self.parser, name, getattr(self, name))
def test_default_to_disabled(self):
parser = expat.ParserCreate()
self.assertFalse(parser.buffer_text)
def test_buffering_enabled(self):
# Make sure buffering is turned on
self.assertTrue(self.parser.buffer_text)
self.parser.Parse(b"<a>1<b/>2<c/>3</a>", True)
self.assertEqual(self.stuff, ['123'],
"buffered text not properly collapsed")
def test1(self):
# XXX This test exposes more detail of Expat's text chunking than we
# XXX like, but it tests what we need to concisely.
self.setHandlers(["StartElementHandler"])
self.parser.Parse(b"<a>1<b buffer-text='no'/>2\n3<c buffer-text='yes'/>4\n5</a>", True)
self.assertEqual(self.stuff,
["<a>", "1", "<b>", "2", "\n", "3", "<c>", "4\n5"],
"buffering control not reacting as expected")
def test2(self):
self.parser.Parse(b"<a>1<b/><2><c/> \n 3</a>", True)
self.assertEqual(self.stuff, ["1<2> \n 3"],
"buffered text not properly collapsed")
def test3(self):
self.setHandlers(["StartElementHandler"])
self.parser.Parse(b"<a>1<b/>2<c/>3</a>", True)
self.assertEqual(self.stuff, ["<a>", "1", "<b>", "2", "<c>", "3"],
"buffered text not properly split")
def test4(self):
self.setHandlers(["StartElementHandler", "EndElementHandler"])
self.parser.CharacterDataHandler = None
self.parser.Parse(b"<a>1<b/>2<c/>3</a>", True)
self.assertEqual(self.stuff,
["<a>", "<b>", "</b>", "<c>", "</c>", "</a>"])
def test5(self):
self.setHandlers(["StartElementHandler", "EndElementHandler"])
self.parser.Parse(b"<a>1<b></b>2<c/>3</a>", True)
self.assertEqual(self.stuff,
["<a>", "1", "<b>", "</b>", "2", "<c>", "</c>", "3", "</a>"])
def test6(self):
self.setHandlers(["CommentHandler", "EndElementHandler",
"StartElementHandler"])
self.parser.Parse(b"<a>1<b/>2<c></c>345</a> ", True)
self.assertEqual(self.stuff,
["<a>", "1", "<b>", "</b>", "2", "<c>", "</c>", "345", "</a>"],
"buffered text not properly split")
def test7(self):
self.setHandlers(["CommentHandler", "EndElementHandler",
"StartElementHandler"])
self.parser.Parse(b"<a>1<b/>2<c></c>3<!--abc-->4<!--def-->5</a> ", True)
self.assertEqual(self.stuff,
["<a>", "1", "<b>", "</b>", "2", "<c>", "</c>", "3",
"<!--abc-->", "4", "<!--def-->", "5", "</a>"],
"buffered text not properly split")
# Test handling of exception from callback:
class HandlerExceptionTest(unittest.TestCase):
def StartElementHandler(self, name, attrs):
raise RuntimeError(name)
def check_traceback_entry(self, entry, filename, funcname):
self.assertEqual(os.path.basename(entry[0]), filename)
self.assertEqual(entry[2], funcname)
def test_exception(self):
parser = expat.ParserCreate()
parser.StartElementHandler = self.StartElementHandler
try:
parser.Parse(b"<a><b><c/></b></a>", True)
self.fail()
except RuntimeError as e:
self.assertEqual(e.args[0], 'a',
"Expected RuntimeError for element 'a', but" + \
" found %r" % e.args[0])
# Check that the traceback contains the relevant line in pyexpat.c
entries = traceback.extract_tb(e.__traceback__)
self.assertEqual(len(entries), 3)
self.check_traceback_entry(entries[0],
"test_pyexpat.py", "test_exception")
self.check_traceback_entry(entries[1],
"pyexpat.c", "StartElement")
self.check_traceback_entry(entries[2],
"test_pyexpat.py", "StartElementHandler")
if (sysconfig.is_python_build()
and not (sys.platform == 'win32' and platform.machine() == 'ARM')
and not is_emscripten
):
self.assertIn('call_with_frame("StartElement"', entries[1][3])
# Test Current* members:
class PositionTest(unittest.TestCase):
def StartElementHandler(self, name, attrs):
self.check_pos('s')
def EndElementHandler(self, name):
self.check_pos('e')
def check_pos(self, event):
pos = (event,
self.parser.CurrentByteIndex,
self.parser.CurrentLineNumber,
self.parser.CurrentColumnNumber)
self.assertTrue(self.upto < len(self.expected_list),
'too many parser events')
expected = self.expected_list[self.upto]
self.assertEqual(pos, expected,
'Expected position %s, got position %s' %(pos, expected))
self.upto += 1
def test(self):
self.parser = expat.ParserCreate()
self.parser.StartElementHandler = self.StartElementHandler
self.parser.EndElementHandler = self.EndElementHandler
self.upto = 0
self.expected_list = [('s', 0, 1, 0), ('s', 5, 2, 1), ('s', 11, 3, 2),
('e', 15, 3, 6), ('e', 17, 4, 1), ('e', 22, 5, 0)]
xml = b'<a>\n <b>\n <c/>\n </b>\n</a>'
self.parser.Parse(xml, True)
class sf1296433Test(unittest.TestCase):
def test_parse_only_xml_data(self):
# http://python.org/sf/1296433
#
xml = "<?xml version='1.0' encoding='iso8859'?><s>%s</s>" % ('a' * 1025)
# this one doesn't crash
#xml = "<?xml version='1.0'?><s>%s</s>" % ('a' * 10000)
class SpecificException(Exception):
pass
def handler(text):
raise SpecificException
parser = expat.ParserCreate()
parser.CharacterDataHandler = handler
self.assertRaises(Exception, parser.Parse, xml.encode('iso8859'))
class ChardataBufferTest(unittest.TestCase):
"""
test setting of chardata buffer size
"""
def test_1025_bytes(self):
self.assertEqual(self.small_buffer_test(1025), 2)
def test_1000_bytes(self):
self.assertEqual(self.small_buffer_test(1000), 1)
def test_wrong_size(self):
parser = expat.ParserCreate()
parser.buffer_text = 1
with self.assertRaises(ValueError):
parser.buffer_size = -1
with self.assertRaises(ValueError):
parser.buffer_size = 0
with self.assertRaises((ValueError, OverflowError)):
parser.buffer_size = sys.maxsize + 1
with self.assertRaises(TypeError):
parser.buffer_size = 512.0
def test_unchanged_size(self):
xml1 = b"<?xml version='1.0' encoding='iso8859'?><s>" + b'a' * 512
xml2 = b'a'*512 + b'</s>'
parser = expat.ParserCreate()
parser.CharacterDataHandler = self.counting_handler
parser.buffer_size = 512
parser.buffer_text = 1
# Feed 512 bytes of character data: the handler should be called
# once.
self.n = 0
parser.Parse(xml1)
self.assertEqual(self.n, 1)
# Reassign to buffer_size, but assign the same size.
parser.buffer_size = parser.buffer_size
self.assertEqual(self.n, 1)
# Try parsing rest of the document
parser.Parse(xml2)
self.assertEqual(self.n, 2)
def test_disabling_buffer(self):
xml1 = b"<?xml version='1.0' encoding='iso8859'?><a>" + b'a' * 512
xml2 = b'b' * 1024
xml3 = b'c' * 1024 + b'</a>';
parser = expat.ParserCreate()
parser.CharacterDataHandler = self.counting_handler
parser.buffer_text = 1
parser.buffer_size = 1024
self.assertEqual(parser.buffer_size, 1024)
# Parse one chunk of XML
self.n = 0
parser.Parse(xml1, False)
self.assertEqual(parser.buffer_size, 1024)
self.assertEqual(self.n, 1)
# Turn off buffering and parse the next chunk.
parser.buffer_text = 0
self.assertFalse(parser.buffer_text)
self.assertEqual(parser.buffer_size, 1024)
for i in range(10):
parser.Parse(xml2, False)
self.assertEqual(self.n, 11)
parser.buffer_text = 1
self.assertTrue(parser.buffer_text)
self.assertEqual(parser.buffer_size, 1024)
parser.Parse(xml3, True)
self.assertEqual(self.n, 12)
def counting_handler(self, text):
self.n += 1
def small_buffer_test(self, buffer_len):
xml = b"<?xml version='1.0' encoding='iso8859'?><s>" + b'a' * buffer_len + b'</s>'
parser = expat.ParserCreate()
parser.CharacterDataHandler = self.counting_handler
parser.buffer_size = 1024
parser.buffer_text = 1
self.n = 0
parser.Parse(xml)
return self.n
def test_change_size_1(self):
xml1 = b"<?xml version='1.0' encoding='iso8859'?><a><s>" + b'a' * 1024
xml2 = b'aaa</s><s>' + b'a' * 1025 + b'</s></a>'
parser = expat.ParserCreate()
parser.CharacterDataHandler = self.counting_handler
parser.buffer_text = 1
parser.buffer_size = 1024
self.assertEqual(parser.buffer_size, 1024)
self.n = 0
parser.Parse(xml1, False)
parser.buffer_size *= 2
self.assertEqual(parser.buffer_size, 2048)
parser.Parse(xml2, True)
self.assertEqual(self.n, 2)
def test_change_size_2(self):
xml1 = b"<?xml version='1.0' encoding='iso8859'?><a>a<s>" + b'a' * 1023
xml2 = b'aaa</s><s>' + b'a' * 1025 + b'</s></a>'
parser = expat.ParserCreate()
parser.CharacterDataHandler = self.counting_handler
parser.buffer_text = 1
parser.buffer_size = 2048
self.assertEqual(parser.buffer_size, 2048)
self.n=0
parser.Parse(xml1, False)
parser.buffer_size = parser.buffer_size // 2
self.assertEqual(parser.buffer_size, 1024)
parser.Parse(xml2, True)
self.assertEqual(self.n, 4)
class MalformedInputTest(unittest.TestCase):
def test1(self):
xml = b"\0\r\n"
parser = expat.ParserCreate()
try:
parser.Parse(xml, True)
self.fail()
except expat.ExpatError as e:
self.assertEqual(str(e), 'unclosed token: line 2, column 0')
def test2(self):
# \xc2\x85 is UTF-8 encoded U+0085 (NEXT LINE)
xml = b"<?xml version\xc2\x85='1.0'?>\r\n"
parser = expat.ParserCreate()
err_pattern = r'XML declaration not well-formed: line 1, column \d+'
with self.assertRaisesRegex(expat.ExpatError, err_pattern):
parser.Parse(xml, True)
class ErrorMessageTest(unittest.TestCase):
def test_codes(self):
# verify mapping of errors.codes and errors.messages
self.assertEqual(errors.XML_ERROR_SYNTAX,
errors.messages[errors.codes[errors.XML_ERROR_SYNTAX]])
def test_expaterror(self):
xml = b'<'
parser = expat.ParserCreate()
try:
parser.Parse(xml, True)
self.fail()
except expat.ExpatError as e:
self.assertEqual(e.code,
errors.codes[errors.XML_ERROR_UNCLOSED_TOKEN])
class ForeignDTDTests(unittest.TestCase):
"""
Tests for the UseForeignDTD method of expat parser objects.
"""
def test_use_foreign_dtd(self):
"""
If UseForeignDTD is passed True and a document without an external
entity reference is parsed, ExternalEntityRefHandler is first called
with None for the public and system ids.
"""
handler_call_args = []
def resolve_entity(context, base, system_id, public_id):
handler_call_args.append((public_id, system_id))
return 1
parser = expat.ParserCreate()
parser.UseForeignDTD(True)
parser.SetParamEntityParsing(expat.XML_PARAM_ENTITY_PARSING_ALWAYS)
parser.ExternalEntityRefHandler = resolve_entity
parser.Parse(b"<?xml version='1.0'?><element/>")
self.assertEqual(handler_call_args, [(None, None)])
# test UseForeignDTD() is equal to UseForeignDTD(True)
handler_call_args[:] = []
parser = expat.ParserCreate()
parser.UseForeignDTD()
parser.SetParamEntityParsing(expat.XML_PARAM_ENTITY_PARSING_ALWAYS)
parser.ExternalEntityRefHandler = resolve_entity
parser.Parse(b"<?xml version='1.0'?><element/>")
self.assertEqual(handler_call_args, [(None, None)])
def test_ignore_use_foreign_dtd(self):
"""
If UseForeignDTD is passed True and a document with an external
entity reference is parsed, ExternalEntityRefHandler is called with
the public and system ids from the document.
"""
handler_call_args = []
def resolve_entity(context, base, system_id, public_id):
handler_call_args.append((public_id, system_id))
return 1
parser = expat.ParserCreate()
parser.UseForeignDTD(True)
parser.SetParamEntityParsing(expat.XML_PARAM_ENTITY_PARSING_ALWAYS)
parser.ExternalEntityRefHandler = resolve_entity
parser.Parse(
b"<?xml version='1.0'?><!DOCTYPE foo PUBLIC 'bar' 'baz'><element/>")
self.assertEqual(handler_call_args, [("bar", "baz")])
if __name__ == "__main__":
unittest.main()