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import os
import libxml2
from twisted.trial import unittest
from scrapy.utils.iterators import csviter, xmliter
from scrapy.contrib_exp.iterators import xmliter_lxml
from scrapy.http import XmlResponse, TextResponse
from scrapy.tests import get_testdata
class XmliterTestCase(unittest.TestCase):
xmliter = staticmethod(xmliter)
def test_xmliter(self):
body = """<?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.select("@id").extract(), x.select("name/text()").extract(), x.select("./type/text()").extract()))
self.assertEqual(attrs,
[(['001'], ['Name 1'], ['Type 1']), (['002'], ['Name 2'], ['Type 2'])])
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.select("text()").extract() for x in self.xmliter(body, 'product')],
[[u'one'], [u'two']])
def test_xmliter_namespaces(self):
body = """\
<?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 = my_iter.next()
node.register_namespace('g', 'http://base.google.com/ns/1.0')
self.assertEqual(node.select('title/text()').extract(), ['Item 1'])
self.assertEqual(node.select('description/text()').extract(), ['This is item 1'])
self.assertEqual(node.select('link/text()').extract(), ['http://www.mydummycompany.com/items/1'])
self.assertEqual(node.select('g:image_link/text()').extract(), ['http://www.mydummycompany.com/images/item1.jpg'])
self.assertEqual(node.select('g:id/text()').extract(), ['ITEM_1'])
self.assertEqual(node.select('g:price/text()').extract(), ['400'])
self.assertEqual(node.select('image_link/text()').extract(), [])
self.assertEqual(node.select('id/text()').extract(), [])
self.assertEqual(node.select('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')
iter.next()
iter.next()
self.assertRaises(StopIteration, iter.next)
def test_xmliter_encoding(self):
body = '<?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(
self.xmliter(response, 'item').next().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)
try:
import lxml
except ImportError:
skip = True
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': u'foo\nbar'},
{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.assert_(all((isinstance(k, unicode) for k in result_row.keys())))
self.assert_(all((isinstance(v, unicode) for v in result_row.values())))
def test_csviter_delimiter(self):
body = get_testdata('feeds', 'feed-sample3.csv').replace(',', '\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': u'foo\nbar'},
{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(','), '\n'.join(sample[1:])
response = TextResponse(url="http://example.com/", body=body)
csv = csviter(response, headers=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 = '\n'.join((body, 'a,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': u'foo\nbar'},
{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)
iter.next()
iter.next()
iter.next()
iter.next()
self.assertRaises(StopIteration, iter.next)
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'}])
if __name__ == "__main__":
unittest.main()
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