summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_sax.py
blob: a411bfd8787c6bd8987ab9542909efbd0792b106 (plain)
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
# regression test for SAX 2.0            -*- coding: iso-8859-1 -*-
# $Id$

from xml.sax import make_parser, ContentHandler, \
                    SAXException, SAXReaderNotAvailable, SAXParseException
try:
    make_parser()
except SAXReaderNotAvailable:
    # don't try to test this module if we cannot create a parser
    raise ImportError("no XML parsers available")
from xml.sax.saxutils import XMLGenerator, escape, unescape, quoteattr, \
                             XMLFilterBase
from xml.sax.expatreader import create_parser
from xml.sax.xmlreader import InputSource, AttributesImpl, AttributesNSImpl
from io import StringIO
from test.test_support import findfile, run_unittest
import unittest
import os

ns_uri = "http://www.python.org/xml-ns/saxtest/"

class XmlTestBase(unittest.TestCase):
    def verify_empty_attrs(self, attrs):
        self.assertRaises(KeyError, attrs.getValue, "attr")
        self.assertRaises(KeyError, attrs.getValueByQName, "attr")
        self.assertRaises(KeyError, attrs.getNameByQName, "attr")
        self.assertRaises(KeyError, attrs.getQNameByName, "attr")
        self.assertRaises(KeyError, attrs.__getitem__, "attr")
        self.assertEquals(attrs.getLength(), 0)
        self.assertEquals(attrs.getNames(), [])
        self.assertEquals(attrs.getQNames(), [])
        self.assertEquals(len(attrs), 0)
        self.assertFalse("attr" in attrs)
        self.assertEquals(list(attrs.keys()), [])
        self.assertEquals(attrs.get("attrs"), None)
        self.assertEquals(attrs.get("attrs", 25), 25)
        self.assertEquals(list(attrs.items()), [])
        self.assertEquals(list(attrs.values()), [])

    def verify_empty_nsattrs(self, attrs):
        self.assertRaises(KeyError, attrs.getValue, (ns_uri, "attr"))
        self.assertRaises(KeyError, attrs.getValueByQName, "ns:attr")
        self.assertRaises(KeyError, attrs.getNameByQName, "ns:attr")
        self.assertRaises(KeyError, attrs.getQNameByName, (ns_uri, "attr"))
        self.assertRaises(KeyError, attrs.__getitem__, (ns_uri, "attr"))
        self.assertEquals(attrs.getLength(), 0)
        self.assertEquals(attrs.getNames(), [])
        self.assertEquals(attrs.getQNames(), [])
        self.assertEquals(len(attrs), 0)
        self.assertFalse((ns_uri, "attr") in attrs)
        self.assertEquals(list(attrs.keys()), [])
        self.assertEquals(attrs.get((ns_uri, "attr")), None)
        self.assertEquals(attrs.get((ns_uri, "attr"), 25), 25)
        self.assertEquals(list(attrs.items()), [])
        self.assertEquals(list(attrs.values()), [])

    def verify_attrs_wattr(self, attrs):
        self.assertEquals(attrs.getLength(), 1)
        self.assertEquals(attrs.getNames(), ["attr"])
        self.assertEquals(attrs.getQNames(), ["attr"])
        self.assertEquals(len(attrs), 1)
        self.assertTrue("attr" in attrs)
        self.assertEquals(list(attrs.keys()), ["attr"])
        self.assertEquals(attrs.get("attr"), "val")
        self.assertEquals(attrs.get("attr", 25), "val")
        self.assertEquals(list(attrs.items()), [("attr", "val")])
        self.assertEquals(list(attrs.values()), ["val"])
        self.assertEquals(attrs.getValue("attr"), "val")
        self.assertEquals(attrs.getValueByQName("attr"), "val")
        self.assertEquals(attrs.getNameByQName("attr"), "attr")
        self.assertEquals(attrs["attr"], "val")
        self.assertEquals(attrs.getQNameByName("attr"), "attr")

class MakeParserTest(unittest.TestCase):
    def test_make_parser2(self):
        # Creating parsers several times in a row should succeed.
        # Testing this because there have been failures of this kind
        # before.
        from xml.sax import make_parser
        p = make_parser()
        from xml.sax import make_parser
        p = make_parser()
        from xml.sax import make_parser
        p = make_parser()
        from xml.sax import make_parser
        p = make_parser()
        from xml.sax import make_parser
        p = make_parser()
        from xml.sax import make_parser
        p = make_parser()


# ===========================================================================
#
#   saxutils tests
#
# ===========================================================================

class SaxutilsTest(unittest.TestCase):
    # ===== escape
    def test_escape_basic(self):
        self.assertEquals(escape("Donald Duck & Co"), "Donald Duck & Co")

    def test_escape_all(self):
        self.assertEquals(escape("<Donald Duck & Co>"),
                          "&lt;Donald Duck &amp; Co&gt;")

    def test_escape_extra(self):
        self.assertEquals(escape("Hei på deg", {"å" : "&aring;"}),
                          "Hei p&aring; deg")

    # ===== unescape
    def test_unescape_basic(self):
        self.assertEquals(unescape("Donald Duck &amp; Co"), "Donald Duck & Co")

    def test_unescape_all(self):
        self.assertEquals(unescape("&lt;Donald Duck &amp; Co&gt;"),
                          "<Donald Duck & Co>")

    def test_unescape_extra(self):
        self.assertEquals(unescape("Hei på deg", {"å" : "&aring;"}),
                          "Hei p&aring; deg")

    def test_unescape_amp_extra(self):
        self.assertEquals(unescape("&amp;foo;", {"&foo;": "splat"}), "&foo;")

    # ===== quoteattr
    def test_quoteattr_basic(self):
        self.assertEquals(quoteattr("Donald Duck & Co"),
                          '"Donald Duck &amp; Co"')

    def test_single_quoteattr(self):
        self.assertEquals(quoteattr('Includes "double" quotes'),
                          '\'Includes "double" quotes\'')

    def test_double_quoteattr(self):
        self.assertEquals(quoteattr("Includes 'single' quotes"),
                          "\"Includes 'single' quotes\"")

    def test_single_double_quoteattr(self):
        self.assertEquals(quoteattr("Includes 'single' and \"double\" quotes"),
                    "\"Includes 'single' and &quot;double&quot; quotes\"")

    # ===== make_parser
    def test_make_parser(self):
        # Creating a parser should succeed - it should fall back
        # to the expatreader
        p = make_parser(['xml.parsers.no_such_parser'])


# ===== XMLGenerator

start = '<?xml version="1.0" encoding="iso-8859-1"?>\n'

class XmlgenTest(unittest.TestCase):
    def test_xmlgen_basic(self):
        result = StringIO()
        gen = XMLGenerator(result)
        gen.startDocument()
        gen.startElement("doc", {})
        gen.endElement("doc")
        gen.endDocument()

        self.assertEquals(result.getvalue(), start + "<doc></doc>")

    def test_xmlgen_content(self):
        result = StringIO()
        gen = XMLGenerator(result)

        gen.startDocument()
        gen.startElement("doc", {})
        gen.characters("huhei")
        gen.endElement("doc")
        gen.endDocument()

        self.assertEquals(result.getvalue(), start + "<doc>huhei</doc>")

    def test_xmlgen_pi(self):
        result = StringIO()
        gen = XMLGenerator(result)

        gen.startDocument()
        gen.processingInstruction("test", "data")
        gen.startElement("doc", {})
        gen.endElement("doc")
        gen.endDocument()

        self.assertEquals(result.getvalue(), start + "<?test data?><doc></doc>")

    def test_xmlgen_content_escape(self):
        result = StringIO()
        gen = XMLGenerator(result)

        gen.startDocument()
        gen.startElement("doc", {})
        gen.characters("<huhei&")
        gen.endElement("doc")
        gen.endDocument()

        self.assertEquals(result.getvalue(),
            start + "<doc>&lt;huhei&amp;</doc>")

    def test_xmlgen_attr_escape(self):
        result = StringIO()
        gen = XMLGenerator(result)

        gen.startDocument()
        gen.startElement("doc", {"a": '"'})
        gen.startElement("e", {"a": "'"})
        gen.endElement("e")
        gen.startElement("e", {"a": "'\""})
        gen.endElement("e")
        gen.startElement("e", {"a": "\n\r\t"})
        gen.endElement("e")
        gen.endElement("doc")
        gen.endDocument()

        self.assertEquals(result.getvalue(), start +
            ("<doc a='\"'><e a=\"'\"></e>"
             "<e a=\"'&quot;\"></e>"
             "<e a=\"&#10;&#13;&#9;\"></e></doc>"))

    def test_xmlgen_ignorable(self):
        result = StringIO()
        gen = XMLGenerator(result)

        gen.startDocument()
        gen.startElement("doc", {})
        gen.ignorableWhitespace(" ")
        gen.endElement("doc")
        gen.endDocument()

        self.assertEquals(result.getvalue(), start + "<doc> </doc>")

    def test_xmlgen_ns(self):
        result = StringIO()
        gen = XMLGenerator(result)

        gen.startDocument()
        gen.startPrefixMapping("ns1", ns_uri)
        gen.startElementNS((ns_uri, "doc"), "ns1:doc", {})
        # add an unqualified name
        gen.startElementNS((None, "udoc"), None, {})
        gen.endElementNS((None, "udoc"), None)
        gen.endElementNS((ns_uri, "doc"), "ns1:doc")
        gen.endPrefixMapping("ns1")
        gen.endDocument()

        self.assertEquals(result.getvalue(), start + \
           ('<ns1:doc xmlns:ns1="%s"><udoc></udoc></ns1:doc>' %
                                         ns_uri))

    def test_1463026_1(self):
        result = StringIO()
        gen = XMLGenerator(result)

        gen.startDocument()
        gen.startElementNS((None, 'a'), 'a', {(None, 'b'):'c'})
        gen.endElementNS((None, 'a'), 'a')
        gen.endDocument()

        self.assertEquals(result.getvalue(), start+'<a b="c"></a>')

    def test_1463026_2(self):
        result = StringIO()
        gen = XMLGenerator(result)

        gen.startDocument()
        gen.startPrefixMapping(None, 'qux')
        gen.startElementNS(('qux', 'a'), 'a', {})
        gen.endElementNS(('qux', 'a'), 'a')
        gen.endPrefixMapping(None)
        gen.endDocument()

        self.assertEquals(result.getvalue(), start+'<a xmlns="qux"></a>')

    def test_1463026_3(self):
        result = StringIO()
        gen = XMLGenerator(result)

        gen.startDocument()
        gen.startPrefixMapping('my', 'qux')
        gen.startElementNS(('qux', 'a'), 'a', {(None, 'b'):'c'})
        gen.endElementNS(('qux', 'a'), 'a')
        gen.endPrefixMapping('my')
        gen.endDocument()

        self.assertEquals(result.getvalue(),
            start+'<my:a xmlns:my="qux" b="c"></my:a>')


class XMLFilterBaseTest(unittest.TestCase):
    def test_filter_basic(self):
        result = StringIO()
        gen = XMLGenerator(result)
        filter = XMLFilterBase()
        filter.setContentHandler(gen)

        filter.startDocument()
        filter.startElement("doc", {})
        filter.characters("content")
        filter.ignorableWhitespace(" ")
        filter.endElement("doc")
        filter.endDocument()

        self.assertEquals(result.getvalue(), start + "<doc>content </doc>")

# ===========================================================================
#
#   expatreader tests
#
# ===========================================================================

xml_test_out = open(findfile("test.xml.out")).read()

class ExpatReaderTest(XmlTestBase):

    # ===== XMLReader support

    def test_expat_file(self):
        parser = create_parser()
        result = StringIO()
        xmlgen = XMLGenerator(result)

        parser.setContentHandler(xmlgen)
        parser.parse(open(findfile("test.xml")))

        self.assertEquals(result.getvalue(), xml_test_out)

    # ===== DTDHandler support

    class TestDTDHandler:

        def __init__(self):
            self._notations = []
            self._entities  = []

        def notationDecl(self, name, publicId, systemId):
            self._notations.append((name, publicId, systemId))

        def unparsedEntityDecl(self, name, publicId, systemId, ndata):
            self._entities.append((name, publicId, systemId, ndata))

    def test_expat_dtdhandler(self):
        parser = create_parser()
        handler = self.TestDTDHandler()
        parser.setDTDHandler(handler)

        parser.feed('<!DOCTYPE doc [\n')
        parser.feed('  <!ENTITY img SYSTEM "expat.gif" NDATA GIF>\n')
        parser.feed('  <!NOTATION GIF PUBLIC "-//CompuServe//NOTATION Graphics Interchange Format 89a//EN">\n')
        parser.feed(']>\n')
        parser.feed('<doc></doc>')
        parser.close()

        self.assertEquals(handler._notations,
            [("GIF", "-//CompuServe//NOTATION Graphics Interchange Format 89a//EN", None)])
        self.assertEquals(handler._entities, [("img", None, "expat.gif", "GIF")])

    # ===== EntityResolver support

    class TestEntityResolver:

        def resolveEntity(self, publicId, systemId):
            inpsrc = InputSource()
            inpsrc.setByteStream(StringIO("<entity/>"))
            return inpsrc

    def test_expat_entityresolver(self):
        parser = create_parser()
        parser.setEntityResolver(self.TestEntityResolver())
        result = StringIO()
        parser.setContentHandler(XMLGenerator(result))

        parser.feed('<!DOCTYPE doc [\n')
        parser.feed('  <!ENTITY test SYSTEM "whatever">\n')
        parser.feed(']>\n')
        parser.feed('<doc>&test;</doc>')
        parser.close()

        self.assertEquals(result.getvalue(), start +
                          "<doc><entity></entity></doc>")

    # ===== Attributes support

    class AttrGatherer(ContentHandler):

        def startElement(self, name, attrs):
            self._attrs = attrs

        def startElementNS(self, name, qname, attrs):
            self._attrs = attrs

    def test_expat_attrs_empty(self):
        parser = create_parser()
        gather = self.AttrGatherer()
        parser.setContentHandler(gather)

        parser.feed("<doc/>")
        parser.close()

        self.verify_empty_attrs(gather._attrs)

    def test_expat_attrs_wattr(self):
        parser = create_parser()
        gather = self.AttrGatherer()
        parser.setContentHandler(gather)

        parser.feed("<doc attr='val'/>")
        parser.close()

        self.verify_attrs_wattr(gather._attrs)

    def test_expat_nsattrs_empty(self):
        parser = create_parser(1)
        gather = self.AttrGatherer()
        parser.setContentHandler(gather)

        parser.feed("<doc/>")
        parser.close()

        self.verify_empty_nsattrs(gather._attrs)

    def test_expat_nsattrs_wattr(self):
        parser = create_parser(1)
        gather = self.AttrGatherer()
        parser.setContentHandler(gather)

        parser.feed("<doc xmlns:ns='%s' ns:attr='val'/>" % ns_uri)
        parser.close()

        attrs = gather._attrs

        self.assertEquals(attrs.getLength(), 1)
        self.assertEquals(attrs.getNames(), [(ns_uri, "attr")])
        self.assertTrue((attrs.getQNames() == [] or
                         attrs.getQNames() == ["ns:attr"]))
        self.assertEquals(len(attrs), 1)
        self.assertTrue((ns_uri, "attr") in attrs)
        self.assertEquals(attrs.get((ns_uri, "attr")), "val")
        self.assertEquals(attrs.get((ns_uri, "attr"), 25), "val")
        self.assertEquals(list(attrs.items()), [((ns_uri, "attr"), "val")])
        self.assertEquals(list(attrs.values()), ["val"])
        self.assertEquals(attrs.getValue((ns_uri, "attr")), "val")
        self.assertEquals(attrs[(ns_uri, "attr")], "val")

    # ===== InputSource support

    def test_expat_inpsource_filename(self):
        parser = create_parser()
        result = StringIO()
        xmlgen = XMLGenerator(result)

        parser.setContentHandler(xmlgen)
        parser.parse(findfile("test.xml"))

        self.assertEquals(result.getvalue(), xml_test_out)

    def test_expat_inpsource_sysid(self):
        parser = create_parser()
        result = StringIO()
        xmlgen = XMLGenerator(result)

        parser.setContentHandler(xmlgen)
        parser.parse(InputSource(findfile("test.xml")))

        self.assertEquals(result.getvalue(), xml_test_out)

    def test_expat_inpsource_stream(self):
        parser = create_parser()
        result = StringIO()
        xmlgen = XMLGenerator(result)

        parser.setContentHandler(xmlgen)
        inpsrc = InputSource()
        inpsrc.setByteStream(open(findfile("test.xml")))
        parser.parse(inpsrc)

        self.assertEquals(result.getvalue(), xml_test_out)

    # ===== IncrementalParser support

    def test_expat_incremental(self):
        result = StringIO()
        xmlgen = XMLGenerator(result)
        parser = create_parser()
        parser.setContentHandler(xmlgen)

        parser.feed("<doc>")
        parser.feed("</doc>")
        parser.close()

        self.assertEquals(result.getvalue(), start + "<doc></doc>")

    def test_expat_incremental_reset(self):
        result = StringIO()
        xmlgen = XMLGenerator(result)
        parser = create_parser()
        parser.setContentHandler(xmlgen)

        parser.feed("<doc>")
        parser.feed("text")

        result = StringIO()
        xmlgen = XMLGenerator(result)
        parser.setContentHandler(xmlgen)
        parser.reset()

        parser.feed("<doc>")
        parser.feed("text")
        parser.feed("</doc>")
        parser.close()

        self.assertEquals(result.getvalue(), start + "<doc>text</doc>")

    # ===== Locator support

    def test_expat_locator_noinfo(self):
        result = StringIO()
        xmlgen = XMLGenerator(result)
        parser = create_parser()
        parser.setContentHandler(xmlgen)

        parser.feed("<doc>")
        parser.feed("</doc>")
        parser.close()

        self.assertEquals(parser.getSystemId(), None)
        self.assertEquals(parser.getPublicId(), None)
        self.assertEquals(parser.getLineNumber(), 1)

    def test_expat_locator_withinfo(self):
        result = StringIO()
        xmlgen = XMLGenerator(result)
        parser = create_parser()
        parser.setContentHandler(xmlgen)
        parser.parse(findfile("test.xml"))

        self.assertEquals(parser.getSystemId(), findfile("test.xml"))
        self.assertEquals(parser.getPublicId(), None)


# ===========================================================================
#
#   error reporting
#
# ===========================================================================

class ErrorReportingTest(unittest.TestCase):
    def test_expat_inpsource_location(self):
        parser = create_parser()
        parser.setContentHandler(ContentHandler()) # do nothing
        source = InputSource()
        source.setByteStream(StringIO("<foo bar foobar>"))   #ill-formed
        name = "a file name"
        source.setSystemId(name)
        try:
            parser.parse(source)
            self.fail()
        except SAXException as e:
            self.assertEquals(e.getSystemId(), name)

    def test_expat_incomplete(self):
        parser = create_parser()
        parser.setContentHandler(ContentHandler()) # do nothing
        self.assertRaises(SAXParseException, parser.parse, StringIO("<foo>"))

    def test_sax_parse_exception_str(self):
        # pass various values from a locator to the SAXParseException to
        # make sure that the __str__() doesn't fall apart when None is
        # passed instead of an integer line and column number
        #
        # use "normal" values for the locator:
        str(SAXParseException("message", None,
                              self.DummyLocator(1, 1)))
        # use None for the line number:
        str(SAXParseException("message", None,
                              self.DummyLocator(None, 1)))
        # use None for the column number:
        str(SAXParseException("message", None,
                              self.DummyLocator(1, None)))
        # use None for both:
        str(SAXParseException("message", None,
                              self.DummyLocator(None, None)))

    class DummyLocator:
        def __init__(self, lineno, colno):
            self._lineno = lineno
            self._colno = colno

        def getPublicId(self):
            return "pubid"

        def getSystemId(self):
            return "sysid"

        def getLineNumber(self):
            return self._lineno

        def getColumnNumber(self):
            return self._colno

# ===========================================================================
#
#   xmlreader tests
#
# ===========================================================================

class XmlReaderTest(XmlTestBase):

    # ===== AttributesImpl
    def test_attrs_empty(self):
        self.verify_empty_attrs(AttributesImpl({}))

    def test_attrs_wattr(self):
        self.verify_attrs_wattr(AttributesImpl({"attr" : "val"}))

    def test_nsattrs_empty(self):
        self.verify_empty_nsattrs(AttributesNSImpl({}, {}))

    def test_nsattrs_wattr(self):
        attrs = AttributesNSImpl({(ns_uri, "attr") : "val"},
                                 {(ns_uri, "attr") : "ns:attr"})

        self.assertEquals(attrs.getLength(), 1)
        self.assertEquals(attrs.getNames(), [(ns_uri, "attr")])
        self.assertEquals(attrs.getQNames(), ["ns:attr"])
        self.assertEquals(len(attrs), 1)
        self.assertTrue((ns_uri, "attr") in attrs)
        self.assertEquals(list(attrs.keys()), [(ns_uri, "attr")])
        self.assertEquals(attrs.get((ns_uri, "attr")), "val")
        self.assertEquals(attrs.get((ns_uri, "attr"), 25), "val")
        self.assertEquals(list(attrs.items()), [((ns_uri, "attr"), "val")])
        self.assertEquals(list(attrs.values()), ["val"])
        self.assertEquals(attrs.getValue((ns_uri, "attr")), "val")
        self.assertEquals(attrs.getValueByQName("ns:attr"), "val")
        self.assertEquals(attrs.getNameByQName("ns:attr"), (ns_uri, "attr"))
        self.assertEquals(attrs[(ns_uri, "attr")], "val")
        self.assertEquals(attrs.getQNameByName((ns_uri, "attr")), "ns:attr")


    # During the development of Python 2.5, an attempt to move the "xml"
    # package implementation to a new package ("xmlcore") proved painful.
    # The goal of this change was to allow applications to be able to
    # obtain and rely on behavior in the standard library implementation
    # of the XML support without needing to be concerned about the
    # availability of the PyXML implementation.
    #
    # While the existing import hackery in Lib/xml/__init__.py can cause
    # PyXML's _xmlpus package to supplant the "xml" package, that only
    # works because either implementation uses the "xml" package name for
    # imports.
    #
    # The move resulted in a number of problems related to the fact that
    # the import machinery's "package context" is based on the name that's
    # being imported rather than the __name__ of the actual package
    # containment; it wasn't possible for the "xml" package to be replaced
    # by a simple module that indirected imports to the "xmlcore" package.
    #
    # The following two tests exercised bugs that were introduced in that
    # attempt.  Keeping these tests around will help detect problems with
    # other attempts to provide reliable access to the standard library's
    # implementation of the XML support.

    def test_sf_1511497(self):
        # Bug report: http://www.python.org/sf/1511497
        import sys
        old_modules = sys.modules.copy()
        for modname in list(sys.modules.keys()):
            if modname.startswith("xml."):
                del sys.modules[modname]
        try:
            import xml.sax.expatreader
            module = xml.sax.expatreader
            self.assertEquals(module.__name__, "xml.sax.expatreader")
        finally:
            sys.modules.update(old_modules)

    def test_sf_1513611(self):
        # Bug report: http://www.python.org/sf/1513611
        sio = StringIO("invalid")
        parser = make_parser()
        from xml.sax import SAXParseException
        self.assertRaises(SAXParseException, parser.parse, sio)


def unittest_main():
    run_unittest(MakeParserTest,
                 SaxutilsTest,
                 XmlgenTest,
                 ExpatReaderTest,
                 ErrorReportingTest,
                 XmlReaderTest)

if __name__ == "__main__":
    unittest_main()