File: selftest2.py

package info (click to toggle)
lxml 2.3.2-1+deb7u1
  • links: PTS
  • area: main
  • in suites: wheezy
  • size: 33,100 kB
  • sloc: python: 23,787; ansic: 559; makefile: 204; xml: 35
file content (434 lines) | stat: -rw-r--r-- 11,490 bytes parent folder | download | duplicates (3)
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
# $Id: selftest.py 2213 2005-01-11 18:49:47Z fredrik $
# elementtree selftest program

# this test script uses Python's "doctest" module to check that the
# *test script* works as expected.

import sys

try:
    from StringIO import StringIO
    BytesIO = StringIO
except ImportError:
    from io import BytesIO, StringIO

from lxml import etree as ElementTree

def unserialize(text):
    file = StringIO(text)
    tree = ElementTree.parse(file)
    return tree.getroot()

def serialize(elem, encoding=None):
    file = BytesIO()
    tree = ElementTree.ElementTree(elem)
    if encoding:
        tree.write(file, encoding=encoding)
    else:
        encoding = "utf-8"
        tree.write(file)
    result = file.getvalue()
    if sys.version_info[0] >= 3:
        result = result.decode(encoding)
    result = result.replace(' />', '/>')
    if result[-1:] == '\n':
        result = result[:-1]
    return result

def summarize(elem):
    return elem.tag

def summarize_list(seq):
    return list(map(summarize, seq))

SAMPLE_XML = unserialize("""
<body>
  <tag>text</tag>
  <tag />
  <section>
    <tag>subtext</tag>
  </section>
</body>
""")

SAMPLE_XML_NS = unserialize("""
<body xmlns="http://effbot.org/ns">
  <tag>text</tag>
  <tag />
  <section>
    <tag>subtext</tag>
  </section>
</body>
""")

# interface tests

def check_string(string):
    len(string)
    for char in string:
        if len(char) != 1:
            print("expected one-character string, got %r" % char)
    new_string = string + ""
    new_string = string + " "
    string[:0]

def check_mapping(mapping):
    len(mapping)
    keys = mapping.keys()
    items = mapping.items()
    for key in keys:
        item = mapping[key]
    mapping["key"] = "value"
    if mapping["key"] != "value":
        print("expected value string, got %r" % mapping["key"])

def check_element(element):
    if not hasattr(element, "tag"):
        print("no tag member")
    if not hasattr(element, "attrib"):
        print("no attrib member")
    if not hasattr(element, "text"):
        print("no text member")
    if not hasattr(element, "tail"):
        print("no tail member")
    check_string(element.tag)
    check_mapping(element.attrib)
    if element.text != None:
        check_string(element.text)
    if element.tail != None:
        check_string(element.tail)

def check_element_tree(tree):
    check_element(tree.getroot())

def element():
    """
    Test element tree interface.

    >>> element = ElementTree.Element("tag")
    >>> check_element(element)
    >>> tree = ElementTree.ElementTree(element)
    >>> check_element_tree(tree)
    """

def parsefile():
    """
    Test parsing from file.  Note that we're opening the files in
    here; by default, the 'parse' function opens the file in binary
    mode, and doctest doesn't filter out carriage returns.

    >>> tree = ElementTree.parse(open("samples/simple.xml", "rb"))
    >>> tree.write(sys.stdout)
    <root>
       <element key="value">text</element>
       <element>text</element>tail
       <empty-element/>
    </root>
    >>> tree = ElementTree.parse(open("samples/simple-ns.xml", "rb"))
    >>> tree.write(sys.stdout)
    <root xmlns="http://namespace/">
       <element key="value">text</element>
       <element>text</element>tail
       <empty-element/>
    </root>
    """

def writefile():
    """
    >>> elem = ElementTree.Element("tag")
    >>> elem.text = "text"
    >>> serialize(elem)
    '<tag>text</tag>'
    >>> ElementTree.SubElement(elem, "subtag").text = "subtext"
    >>> serialize(elem)
    '<tag>text<subtag>subtext</subtag></tag>'
    """

def encoding():
    r"""
    Test encoding issues.

    >>> elem = ElementTree.Element("tag")
    >>> elem.text = u'abc'
    >>> serialize(elem)
    '<tag>abc</tag>'
    >>> serialize(elem, "utf-8")
    '<tag>abc</tag>'
    >>> serialize(elem, "us-ascii")
    '<tag>abc</tag>'
    >>> serialize(elem, "iso-8859-1").lower()
    "<?xml version='1.0' encoding='iso-8859-1'?>\n<tag>abc</tag>"

    >>> elem.text = "<&\"\'>"
    >>> serialize(elem)
    '<tag>&lt;&amp;"\'&gt;</tag>'
    >>> serialize(elem, "utf-8")
    '<tag>&lt;&amp;"\'&gt;</tag>'
    >>> serialize(elem, "us-ascii") # cdata characters
    '<tag>&lt;&amp;"\'&gt;</tag>'
    >>> serialize(elem, "iso-8859-1").lower()
    '<?xml version=\'1.0\' encoding=\'iso-8859-1\'?>\n<tag>&lt;&amp;"\'&gt;</tag>'

    >>> elem.attrib["key"] = "<&\"\'>"
    >>> elem.text = None
    >>> serialize(elem)
    '<tag key="&lt;&amp;&quot;\'&gt;"/>'
    >>> serialize(elem, "utf-8")
    '<tag key="&lt;&amp;&quot;\'&gt;"/>'
    >>> serialize(elem, "us-ascii")
    '<tag key="&lt;&amp;&quot;\'&gt;"/>'
    >>> serialize(elem, "iso-8859-1").lower()
    '<?xml version=\'1.0\' encoding=\'iso-8859-1\'?>\n<tag key="&lt;&amp;&quot;\'&gt;"/>'

    >>> elem.text = u'\xe5\xf6\xf6<>'
    >>> elem.attrib.clear()
    >>> serialize(elem)
    '<tag>&#229;&#246;&#246;&lt;&gt;</tag>'
    >>> serialize(elem, "utf-8")
    '<tag>\xc3\xa5\xc3\xb6\xc3\xb6&lt;&gt;</tag>'
    >>> serialize(elem, "us-ascii")
    '<tag>&#229;&#246;&#246;&lt;&gt;</tag>'
    >>> serialize(elem, "iso-8859-1").lower()
    "<?xml version='1.0' encoding='iso-8859-1'?>\n<tag>\xe5\xf6\xf6&lt;&gt;</tag>"

    >>> elem.attrib["key"] = u'\xe5\xf6\xf6<>'
    >>> elem.text = None
    >>> serialize(elem)
    '<tag key="&#229;&#246;&#246;&lt;&gt;"/>'
    >>> serialize(elem, "utf-8")
    '<tag key="\xc3\xa5\xc3\xb6\xc3\xb6&lt;&gt;"/>'
    >>> serialize(elem, "us-ascii")
    '<tag key="&#229;&#246;&#246;&lt;&gt;"/>'
    >>> serialize(elem, "iso-8859-1").lower()
    '<?xml version=\'1.0\' encoding=\'iso-8859-1\'?>\n<tag key="\xe5\xf6\xf6&lt;&gt;"/>'

    """

if sys.version_info[0] >= 3:
    encoding.__doc__ = encoding.__doc__.replace("u'", "'")

def qname():
    """
    Test QName handling.

    1) decorated tags

    >>> elem = ElementTree.Element("{uri}tag")
    >>> serialize(elem) # 1.1
    '<ns0:tag xmlns:ns0="uri"/>'

##     2) decorated attributes

##     >>> elem.attrib["{uri}key"] = "value"
##     >>> serialize(elem) # 2.1
##     '<ns0:tag ns0:key="value" xmlns:ns0="uri"/>'

    """

def cdata():
    """
    Test CDATA handling (etc).

    >>> serialize(unserialize("<tag>hello</tag>"))
    '<tag>hello</tag>'
    >>> serialize(unserialize("<tag>&#104;&#101;&#108;&#108;&#111;</tag>"))
    '<tag>hello</tag>'
    >>> serialize(unserialize("<tag><![CDATA[hello]]></tag>"))
    '<tag>hello</tag>'

    """

def find():
    """
    Test find methods (including xpath syntax).

    >>> elem = SAMPLE_XML
    >>> elem.find("tag").tag
    'tag'
    >>> ElementTree.ElementTree(elem).find("tag").tag
    'tag'
    >>> elem.find("section/tag").tag
    'tag'
    >>> ElementTree.ElementTree(elem).find("section/tag").tag
    'tag'
    >>> elem.findtext("tag")
    'text'
    >>> elem.findtext("tog", "default")
    'default'
    >>> ElementTree.ElementTree(elem).findtext("tag")
    'text'
    >>> elem.findtext("section/tag")
    'subtext'
    >>> ElementTree.ElementTree(elem).findtext("section/tag")
    'subtext'
    >>> summarize_list(elem.findall("tag"))
    ['tag', 'tag']
    >>> summarize_list(elem.findall("*"))
    ['tag', 'tag', 'section']
    >>> summarize_list(elem.findall(".//tag"))
    ['tag', 'tag', 'tag']
    >>> summarize_list(elem.findall("section/tag"))
    ['tag']
    >>> summarize_list(elem.findall("section//tag"))
    ['tag']
    >>> summarize_list(elem.findall("section/*"))
    ['tag']
    >>> summarize_list(elem.findall("section//*"))
    ['tag']
    >>> summarize_list(elem.findall("section/.//*"))
    ['tag']
    >>> summarize_list(elem.findall("*/*"))
    ['tag']
    >>> summarize_list(elem.findall("*//*"))
    ['tag']
    >>> summarize_list(elem.findall("*/tag"))
    ['tag']
    >>> summarize_list(elem.findall("*/./tag"))
    ['tag']
    >>> summarize_list(elem.findall("./tag"))
    ['tag', 'tag']
    >>> summarize_list(elem.findall(".//tag"))
    ['tag', 'tag', 'tag']
    >>> summarize_list(elem.findall("././tag"))
    ['tag', 'tag']
    >>> summarize_list(ElementTree.ElementTree(elem).findall("/tag"))
    ['tag', 'tag']
    >>> summarize_list(ElementTree.ElementTree(elem).findall("./tag"))
    ['tag', 'tag']
    >>> elem = SAMPLE_XML_NS
    >>> summarize_list(elem.findall("tag"))
    []
    >>> summarize_list(elem.findall("{http://effbot.org/ns}tag"))
    ['{http://effbot.org/ns}tag', '{http://effbot.org/ns}tag']
    >>> summarize_list(elem.findall(".//{http://effbot.org/ns}tag"))
    ['{http://effbot.org/ns}tag', '{http://effbot.org/ns}tag', '{http://effbot.org/ns}tag']
    """

# XXX only deep copying is supported

def copy():
    """
    Test copy handling (etc).

    >>> import copy
    >>> e1 = unserialize("<tag>hello<foo/></tag>")
    >>> # e2 = copy.copy(e1)
    >>> e3 = copy.deepcopy(e1)
    >>> e1.find("foo").tag = "bar"

    >>> serialize(e1).replace(' ', '')
    '<tag>hello<bar/></tag>'

##     >>> serialize(e2).replace(' ', '')
##     '<tag>hello<bar/></tag>'

    >>> serialize(e3).replace(' ', '')
    '<tag>hello<foo/></tag>'

    """

def attrib():
    """
    Test attribute handling.

    >>> elem = ElementTree.Element("tag")
    >>> elem.get("key") # 1.1
    >>> elem.get("key", "default") # 1.2
    'default'
    >>> elem.set("key", "value")
    >>> elem.get("key") # 1.3
    'value'

    >>> elem = ElementTree.Element("tag", key="value")
    >>> elem.get("key") # 2.1
    'value'
    >>> elem.attrib # 2.2
    {'key': 'value'}

    >>> elem = ElementTree.Element("tag", {"key": "value"})
    >>> elem.get("key") # 3.1
    'value'
    >>> elem.attrib # 3.2
    {'key': 'value'}

    >>> elem = ElementTree.Element("tag", {"key": "other"}, key="value")
    >>> elem.get("key") # 4.1
    'value'
    >>> elem.attrib # 4.2
    {'key': 'value'}

    """

def makeelement():
    """
    Test makeelement handling.

    >>> elem = ElementTree.Element("tag")
    >>> subelem = elem.makeelement("subtag", {"key": "value"})
    >>> elem.append(subelem)
    >>> serialize(elem)
    '<tag><subtag key="value"/></tag>'

    >>> elem.clear()
    >>> serialize(elem)
    '<tag/>'
    >>> elem.append(subelem)
    >>> serialize(elem)
    '<tag><subtag key="value"/></tag>'

    """

## def observer():
##     """
##     Test observers.

##     >>> def observer(action, elem):
##     ...     print("%s %s" % (action, elem.tag))
##     >>> builder = ElementTree.TreeBuilder()
##     >>> builder.addobserver(observer)
##     >>> parser = ElementTree.XMLParser(builder)
##     >>> parser.feed(open("samples/simple.xml", "rb").read())
##     start root
##     start element
##     end element
##     start element
##     end element
##     start empty-element
##     end empty-element
##     end root

##     """

ENTITY_XML = """\
<!DOCTYPE points [
<!ENTITY % user-entities SYSTEM 'user-entities.xml'>
%user-entities;
]>
<document>&entity;</document>
"""

## def entity():
##     """
##     Test entity handling.

##     1) bad entities

##     >>> ElementTree.XML("<document>&entity;</document>")
##     Traceback (most recent call last):
##     SyntaxError: undefined entity: line 1, column 10

##     2) custom entity

##     >>> parser = ElementTree.XMLParser()
##     >>> parser.entity["entity"] = "text"
##     >>> parser.feed(ENTITY_XML)
##     >>> root = parser.close()
##     >>> serialize(root)
##     '<document>text</document>'

##     """

if __name__ == "__main__":
    import doctest, selftest2
    failed, tested = doctest.testmod(selftest2)
    print("%d tests ok." % (tested - failed))