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|
# -*- coding: utf-8 -*-
import os
import six
from twisted.trial import unittest
from scrapy.utils.iterators import csviter, xmliter, _body_or_str, xmliter_lxml
from scrapy.http import XmlResponse, TextResponse, Response
from tests import get_testdata
FOOBAR_NL = u"foo" + os.linesep + u"bar"
class XmliterTestCase(unittest.TestCase):
xmliter = staticmethod(xmliter)
def test_xmliter(self):
body = b"""<?xml version="1.0" encoding="UTF-8"?>\
<products xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="someschmea.xsd">\
<product id="001">\
<type>Type 1</type>\
<name>Name 1</name>\
</product>\
<product id="002">\
<type>Type 2</type>\
<name>Name 2</name>\
</product>\
</products>"""
response = XmlResponse(url="http://example.com", body=body)
attrs = []
for x in self.xmliter(response, 'product'):
attrs.append((x.xpath("@id").extract(), x.xpath("name/text()").extract(), x.xpath("./type/text()").extract()))
self.assertEqual(attrs,
[(['001'], ['Name 1'], ['Type 1']), (['002'], ['Name 2'], ['Type 2'])])
def test_xmliter_unusual_node(self):
body = b"""<?xml version="1.0" encoding="UTF-8"?>
<root>
<matchme...></matchme...>
<matchmenot></matchmenot>
</root>
"""
response = XmlResponse(url="http://example.com", body=body)
nodenames = [e.xpath('name()').extract()
for e in self.xmliter(response, 'matchme...')]
self.assertEqual(nodenames, [['matchme...']])
def test_xmliter_unicode(self):
# example taken from https://github.com/scrapy/scrapy/issues/1665
body = u"""<?xml version="1.0" encoding="UTF-8"?>
<þingflokkar>
<þingflokkur id="26">
<heiti />
<skammstafanir>
<stuttskammstöfun>-</stuttskammstöfun>
<löngskammstöfun />
</skammstafanir>
<tímabil>
<fyrstaþing>80</fyrstaþing>
</tímabil>
</þingflokkur>
<þingflokkur id="21">
<heiti>Alþýðubandalag</heiti>
<skammstafanir>
<stuttskammstöfun>Ab</stuttskammstöfun>
<löngskammstöfun>Alþb.</löngskammstöfun>
</skammstafanir>
<tímabil>
<fyrstaþing>76</fyrstaþing>
<síðastaþing>123</síðastaþing>
</tímabil>
</þingflokkur>
<þingflokkur id="27">
<heiti>Alþýðuflokkur</heiti>
<skammstafanir>
<stuttskammstöfun>A</stuttskammstöfun>
<löngskammstöfun>Alþfl.</löngskammstöfun>
</skammstafanir>
<tímabil>
<fyrstaþing>27</fyrstaþing>
<síðastaþing>120</síðastaþing>
</tímabil>
</þingflokkur>
</þingflokkar>"""
for r in (
# with bytes
XmlResponse(url="http://example.com", body=body.encode('utf-8')),
# Unicode body needs encoding information
XmlResponse(url="http://example.com", body=body, encoding='utf-8')):
attrs = []
for x in self.xmliter(r, u'þingflokkur'):
attrs.append((x.xpath('@id').extract(),
x.xpath(u'./skammstafanir/stuttskammstöfun/text()').extract(),
x.xpath(u'./tímabil/fyrstaþing/text()').extract()))
self.assertEqual(attrs,
[([u'26'], [u'-'], [u'80']),
([u'21'], [u'Ab'], [u'76']),
([u'27'], [u'A'], [u'27'])])
def test_xmliter_text(self):
body = u"""<?xml version="1.0" encoding="UTF-8"?><products><product>one</product><product>two</product></products>"""
self.assertEqual([x.xpath("text()").extract() for x in self.xmliter(body, 'product')],
[[u'one'], [u'two']])
def test_xmliter_namespaces(self):
body = b"""\
<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns:g="http://base.google.com/ns/1.0">
<channel>
<title>My Dummy Company</title>
<link>http://www.mydummycompany.com</link>
<description>This is a dummy company. We do nothing.</description>
<item>
<title>Item 1</title>
<description>This is item 1</description>
<link>http://www.mydummycompany.com/items/1</link>
<g:image_link>http://www.mydummycompany.com/images/item1.jpg</g:image_link>
<g:id>ITEM_1</g:id>
<g:price>400</g:price>
</item>
</channel>
</rss>
"""
response = XmlResponse(url='http://mydummycompany.com', body=body)
my_iter = self.xmliter(response, 'item')
node = next(my_iter)
node.register_namespace('g', 'http://base.google.com/ns/1.0')
self.assertEqual(node.xpath('title/text()').extract(), ['Item 1'])
self.assertEqual(node.xpath('description/text()').extract(), ['This is item 1'])
self.assertEqual(node.xpath('link/text()').extract(), ['http://www.mydummycompany.com/items/1'])
self.assertEqual(node.xpath('g:image_link/text()').extract(), ['http://www.mydummycompany.com/images/item1.jpg'])
self.assertEqual(node.xpath('g:id/text()').extract(), ['ITEM_1'])
self.assertEqual(node.xpath('g:price/text()').extract(), ['400'])
self.assertEqual(node.xpath('image_link/text()').extract(), [])
self.assertEqual(node.xpath('id/text()').extract(), [])
self.assertEqual(node.xpath('price/text()').extract(), [])
def test_xmliter_exception(self):
body = u"""<?xml version="1.0" encoding="UTF-8"?><products><product>one</product><product>two</product></products>"""
iter = self.xmliter(body, 'product')
next(iter)
next(iter)
self.assertRaises(StopIteration, next, iter)
def test_xmliter_objtype_exception(self):
i = self.xmliter(42, 'product')
self.assertRaises(AssertionError, next, i)
def test_xmliter_encoding(self):
body = b'<?xml version="1.0" encoding="ISO-8859-9"?>\n<xml>\n <item>Some Turkish Characters \xd6\xc7\xde\xdd\xd0\xdc \xfc\xf0\xfd\xfe\xe7\xf6</item>\n</xml>\n\n'
response = XmlResponse('http://www.example.com', body=body)
self.assertEqual(
next(self.xmliter(response, 'item')).extract(),
u'<item>Some Turkish Characters \xd6\xc7\u015e\u0130\u011e\xdc \xfc\u011f\u0131\u015f\xe7\xf6</item>'
)
class LxmlXmliterTestCase(XmliterTestCase):
xmliter = staticmethod(xmliter_lxml)
def test_xmliter_iterate_namespace(self):
body = b"""\
<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns="http://base.google.com/ns/1.0">
<channel>
<title>My Dummy Company</title>
<link>http://www.mydummycompany.com</link>
<description>This is a dummy company. We do nothing.</description>
<item>
<title>Item 1</title>
<description>This is item 1</description>
<link>http://www.mydummycompany.com/items/1</link>
<image_link>http://www.mydummycompany.com/images/item1.jpg</image_link>
<image_link>http://www.mydummycompany.com/images/item2.jpg</image_link>
</item>
</channel>
</rss>
"""
response = XmlResponse(url='http://mydummycompany.com', body=body)
no_namespace_iter = self.xmliter(response, 'image_link')
self.assertEqual(len(list(no_namespace_iter)), 0)
namespace_iter = self.xmliter(response, 'image_link', 'http://base.google.com/ns/1.0')
node = next(namespace_iter)
self.assertEqual(node.xpath('text()').extract(), ['http://www.mydummycompany.com/images/item1.jpg'])
node = next(namespace_iter)
self.assertEqual(node.xpath('text()').extract(), ['http://www.mydummycompany.com/images/item2.jpg'])
def test_xmliter_namespaces_prefix(self):
body = b"""\
<?xml version="1.0" encoding="UTF-8"?>
<root>
<h:table xmlns:h="http://www.w3.org/TR/html4/">
<h:tr>
<h:td>Apples</h:td>
<h:td>Bananas</h:td>
</h:tr>
</h:table>
<f:table xmlns:f="http://www.w3schools.com/furniture">
<f:name>African Coffee Table</f:name>
<f:width>80</f:width>
<f:length>120</f:length>
</f:table>
</root>
"""
response = XmlResponse(url='http://mydummycompany.com', body=body)
my_iter = self.xmliter(response, 'table', 'http://www.w3.org/TR/html4/', 'h')
node = next(my_iter)
self.assertEqual(len(node.xpath('h:tr/h:td').extract()), 2)
self.assertEqual(node.xpath('h:tr/h:td[1]/text()').extract(), ['Apples'])
self.assertEqual(node.xpath('h:tr/h:td[2]/text()').extract(), ['Bananas'])
my_iter = self.xmliter(response, 'table', 'http://www.w3schools.com/furniture', 'f')
node = next(my_iter)
self.assertEqual(node.xpath('f:name/text()').extract(), ['African Coffee Table'])
def test_xmliter_objtype_exception(self):
i = self.xmliter(42, 'product')
self.assertRaises(TypeError, next, i)
class UtilsCsvTestCase(unittest.TestCase):
sample_feeds_dir = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'sample_data', 'feeds')
sample_feed_path = os.path.join(sample_feeds_dir, 'feed-sample3.csv')
sample_feed2_path = os.path.join(sample_feeds_dir, 'feed-sample4.csv')
sample_feed3_path = os.path.join(sample_feeds_dir, 'feed-sample5.csv')
def test_csviter_defaults(self):
body = get_testdata('feeds', 'feed-sample3.csv')
response = TextResponse(url="http://example.com/", body=body)
csv = csviter(response)
result = [row for row in csv]
self.assertEqual(result,
[{u'id': u'1', u'name': u'alpha', u'value': u'foobar'},
{u'id': u'2', u'name': u'unicode', u'value': u'\xfan\xedc\xf3d\xe9\u203d'},
{u'id': u'3', u'name': u'multi', u'value': FOOBAR_NL},
{u'id': u'4', u'name': u'empty', u'value': u''}])
# explicit type check cuz' we no like stinkin' autocasting! yarrr
for result_row in result:
self.assertTrue(all((isinstance(k, six.text_type) for k in result_row.keys())))
self.assertTrue(all((isinstance(v, six.text_type) for v in result_row.values())))
def test_csviter_delimiter(self):
body = get_testdata('feeds', 'feed-sample3.csv').replace(b',', b'\t')
response = TextResponse(url="http://example.com/", body=body)
csv = csviter(response, delimiter='\t')
self.assertEqual([row for row in csv],
[{u'id': u'1', u'name': u'alpha', u'value': u'foobar'},
{u'id': u'2', u'name': u'unicode', u'value': u'\xfan\xedc\xf3d\xe9\u203d'},
{u'id': u'3', u'name': u'multi', u'value': FOOBAR_NL},
{u'id': u'4', u'name': u'empty', u'value': u''}])
def test_csviter_quotechar(self):
body1 = get_testdata('feeds', 'feed-sample6.csv')
body2 = get_testdata('feeds', 'feed-sample6.csv').replace(b',', b'|')
response1 = TextResponse(url="http://example.com/", body=body1)
csv1 = csviter(response1, quotechar="'")
self.assertEqual([row for row in csv1],
[{u'id': u'1', u'name': u'alpha', u'value': u'foobar'},
{u'id': u'2', u'name': u'unicode', u'value': u'\xfan\xedc\xf3d\xe9\u203d'},
{u'id': u'3', u'name': u'multi', u'value': FOOBAR_NL},
{u'id': u'4', u'name': u'empty', u'value': u''}])
response2 = TextResponse(url="http://example.com/", body=body2)
csv2 = csviter(response2, delimiter="|", quotechar="'")
self.assertEqual([row for row in csv2],
[{u'id': u'1', u'name': u'alpha', u'value': u'foobar'},
{u'id': u'2', u'name': u'unicode', u'value': u'\xfan\xedc\xf3d\xe9\u203d'},
{u'id': u'3', u'name': u'multi', u'value': FOOBAR_NL},
{u'id': u'4', u'name': u'empty', u'value': u''}])
def test_csviter_wrong_quotechar(self):
body = get_testdata('feeds', 'feed-sample6.csv')
response = TextResponse(url="http://example.com/", body=body)
csv = csviter(response)
self.assertEqual([row for row in csv],
[{u"'id'": u"1", u"'name'": u"'alpha'", u"'value'": u"'foobar'"},
{u"'id'": u"2", u"'name'": u"'unicode'", u"'value'": u"'\xfan\xedc\xf3d\xe9\u203d'"},
{u"'id'": u"'3'", u"'name'": u"'multi'", u"'value'": u"'foo"},
{u"'id'": u"4", u"'name'": u"'empty'", u"'value'": u""}])
def test_csviter_delimiter_binary_response_assume_utf8_encoding(self):
body = get_testdata('feeds', 'feed-sample3.csv').replace(b',', b'\t')
response = Response(url="http://example.com/", body=body)
csv = csviter(response, delimiter='\t')
self.assertEqual([row for row in csv],
[{u'id': u'1', u'name': u'alpha', u'value': u'foobar'},
{u'id': u'2', u'name': u'unicode', u'value': u'\xfan\xedc\xf3d\xe9\u203d'},
{u'id': u'3', u'name': u'multi', u'value': FOOBAR_NL},
{u'id': u'4', u'name': u'empty', u'value': u''}])
def test_csviter_headers(self):
sample = get_testdata('feeds', 'feed-sample3.csv').splitlines()
headers, body = sample[0].split(b','), b'\n'.join(sample[1:])
response = TextResponse(url="http://example.com/", body=body)
csv = csviter(response, headers=[h.decode('utf-8') for h in headers])
self.assertEqual([row for row in csv],
[{u'id': u'1', u'name': u'alpha', u'value': u'foobar'},
{u'id': u'2', u'name': u'unicode', u'value': u'\xfan\xedc\xf3d\xe9\u203d'},
{u'id': u'3', u'name': u'multi', u'value': u'foo\nbar'},
{u'id': u'4', u'name': u'empty', u'value': u''}])
def test_csviter_falserow(self):
body = get_testdata('feeds', 'feed-sample3.csv')
body = b'\n'.join((body, b'a,b', b'a,b,c,d'))
response = TextResponse(url="http://example.com/", body=body)
csv = csviter(response)
self.assertEqual([row for row in csv],
[{u'id': u'1', u'name': u'alpha', u'value': u'foobar'},
{u'id': u'2', u'name': u'unicode', u'value': u'\xfan\xedc\xf3d\xe9\u203d'},
{u'id': u'3', u'name': u'multi', u'value': FOOBAR_NL},
{u'id': u'4', u'name': u'empty', u'value': u''}])
def test_csviter_exception(self):
body = get_testdata('feeds', 'feed-sample3.csv')
response = TextResponse(url="http://example.com/", body=body)
iter = csviter(response)
next(iter)
next(iter)
next(iter)
next(iter)
self.assertRaises(StopIteration, next, iter)
def test_csviter_encoding(self):
body1 = get_testdata('feeds', 'feed-sample4.csv')
body2 = get_testdata('feeds', 'feed-sample5.csv')
response = TextResponse(url="http://example.com/", body=body1, encoding='latin1')
csv = csviter(response)
self.assertEqual([row for row in csv],
[{u'id': u'1', u'name': u'latin1', u'value': u'test'},
{u'id': u'2', u'name': u'something', u'value': u'\xf1\xe1\xe9\xf3'}])
response = TextResponse(url="http://example.com/", body=body2, encoding='cp852')
csv = csviter(response)
self.assertEqual([row for row in csv],
[{u'id': u'1', u'name': u'cp852', u'value': u'test'},
{u'id': u'2', u'name': u'something', u'value': u'\u255a\u2569\u2569\u2569\u2550\u2550\u2557'}])
class TestHelper(unittest.TestCase):
bbody = b'utf8-body'
ubody = bbody.decode('utf8')
txtresponse = TextResponse(url='http://example.org/', body=bbody, encoding='utf-8')
response = Response(url='http://example.org/', body=bbody)
def test_body_or_str(self):
for obj in (self.bbody, self.ubody, self.txtresponse, self.response):
r1 = _body_or_str(obj)
self._assert_type_and_value(r1, self.ubody, obj)
r2 = _body_or_str(obj, unicode=True)
self._assert_type_and_value(r2, self.ubody, obj)
r3 = _body_or_str(obj, unicode=False)
self._assert_type_and_value(r3, self.bbody, obj)
self.assertTrue(type(r1) is type(r2))
self.assertTrue(type(r1) is not type(r3))
def _assert_type_and_value(self, a, b, obj):
self.assertTrue(type(a) is type(b),
'Got {}, expected {} for {!r}'.format(type(a), type(b), obj))
self.assertEqual(a, b)
if __name__ == "__main__":
unittest.main()
|
