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test_http_io.py
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test_http_io.py
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"""
Web IO test cases (wsgiref)
"""
import unittest
import textwrap
import sys
import gzip
from .common_imports import etree, HelperTestCase, BytesIO, _bytes
from .dummy_http_server import webserver, HTTPRequestCollector
class HttpIOTestCase(HelperTestCase):
etree = etree
def _parse_from_http(self, data, code=200, headers=None):
parser = self.etree.XMLParser(no_network=False)
handler = HTTPRequestCollector(data, code, headers)
with webserver(handler) as host_url:
tree = self.etree.parse(host_url + 'TEST', parser=parser)
self.assertEqual([('/TEST', [])], handler.requests)
return tree
def test_http_client(self):
tree = self._parse_from_http(b'<root><a/></root>')
self.assertEqual('root', tree.getroot().tag)
self.assertEqual('a', tree.getroot()[0].tag)
def test_http_client_404(self):
try:
self._parse_from_http(b'<root/>', code=404)
except OSError:
self.assertTrue(True)
else:
self.assertTrue(False, "expected IOError")
def test_http_client_gzip(self):
f = BytesIO()
gz = gzip.GzipFile(fileobj=f, mode='w', filename='test.xml')
gz.write(b'<root><a/></root>')
gz.close()
data = f.getvalue()
del f, gz
headers = [('Content-Encoding', 'gzip')]
tree = self._parse_from_http(data, headers=headers)
self.assertEqual('root', tree.getroot().tag)
self.assertEqual('a', tree.getroot()[0].tag)
def test_parser_input_mix(self):
data = b'<root><a/></root>'
handler = HTTPRequestCollector(data)
parser = self.etree.XMLParser(no_network=False)
with webserver(handler) as host_url:
tree = self.etree.parse(host_url, parser=parser)
root = tree.getroot()
self.assertEqual('a', root[0].tag)
root = self.etree.fromstring(data)
self.assertEqual('a', root[0].tag)
tree = self.etree.parse(host_url, parser=parser)
root = tree.getroot()
self.assertEqual('a', root[0].tag)
root = self.etree.fromstring(data)
self.assertEqual('a', root[0].tag)
root = self.etree.fromstring(data)
self.assertEqual('a', root[0].tag)
def test_network_dtd(self):
data = [_bytes(textwrap.dedent(s)) for s in [
# XML file
'''\
<?xml version="1.0"?>
<!DOCTYPE root SYSTEM "./file.dtd">
<root>&myentity;</root>
''',
# DTD
'<!ENTITY myentity "DEFINED">',
]]
responses = []
def handler(environ, start_response):
start_response('200 OK', [])
return [responses.pop()]
with webserver(handler) as host_url:
# DTD network loading enabled
responses = data[::-1]
tree = self.etree.parse(
host_url + 'dir/test.xml',
parser=self.etree.XMLParser(
load_dtd=True, no_network=False))
self.assertFalse(responses) # all read
root = tree.getroot()
self.assertEqual('DEFINED', root.text)
# DTD network loading disabled
responses = data[::-1]
try:
self.etree.parse(
host_url + 'dir/test.xml',
parser=self.etree.XMLParser(
load_dtd=True, no_network=True))
except self.etree.XMLSyntaxError:
self.assertTrue("myentity" in str(sys.exc_info()[1]))
self.assertEqual(1, len(responses)) # DTD not read
except OSError:
self.assertTrue("failed to load" in str(sys.exc_info()[1]))
self.assertEqual(2, len(responses)) # nothing read
else:
self.assertTrue(False)
def test_suite():
suite = unittest.TestSuite()
suite.addTests([unittest.defaultTestLoader.loadTestsFromTestCase(HttpIOTestCase)])
return suite
if __name__ == '__main__':
print('to test use test.py %s' % __file__)