def testSeekable(self):
from mechanize._response import seek_wrapper
text = self.text
for ii in range(1, 6):
fh = TestUnSeekable(text)
sfh = seek_wrapper(fh)
test = getattr(self, "_test%d" % ii)
test(sfh)
# copies have independent seek positions
fh = TestUnSeekable(text)
sfh = seek_wrapper(fh)
self._testCopy(sfh)
def testSeekable(self):
from mechanize._response import seek_wrapper
text = self.text
for ii in range(1, 6):
fh = TestUnSeekable(text)
sfh = seek_wrapper(fh)
test = getattr(self, "_test%d" % ii)
test(sfh)
# copies have independent seek positions
fh = TestUnSeekable(text)
sfh = seek_wrapper(fh)
self._testCopy(sfh)
def test_upgrade_response(self):
def is_response(r):
names = "get_data read readline readlines close seek code msg".split(
)
for name in names:
self.assertTrue(hasattr(r, name),
'No attr named: {}'.format(name))
self.assertEqual(r.get_data(), b"test data")
from mechanize._response import upgrade_response, make_headers, make_response, closeable_response, seek_wrapper
data = b"test data"
url = "http://example.com/"
code = 200
msg = "OK"
# Normal response (closeable_response wrapped with seek_wrapper): return a copy
r1 = make_response(data, [], url, code, msg)
r2 = upgrade_response(r1)
is_response(r2)
self.assertIsNot(r1, r2)
self.assertIs(r1.wrapped, r2.wrapped)
# closeable_response with no seek_wrapper: wrap with seek_wrapper
r1 = closeable_response(BytesIO(data), make_headers([]), url, code,
msg)
self.assertRaises(AssertionError, is_response, r1)
r2 = upgrade_response(r1)
is_response(r2)
self.assertIsNot(r1, r2)
self.assertIs(r1, r2.wrapped)
# addinfourl: extract .fp and wrap it with closeable_response and seek_wrapper
from mechanize.polyglot import addinfourl
r1 = addinfourl(BytesIO(data), make_headers([]), url)
self.assertRaises(AssertionError, is_response, r1)
r2 = upgrade_response(r1)
is_response(r2)
self.assertIsNot(r1, r2)
self.assertIsNot(r1, r2.wrapped)
self.assertIs(r1.fp, r2.wrapped.fp)
# addinfourl with code, msg
r1 = addinfourl(BytesIO(data), make_headers([]), url)
r1.code = 206
r1.msg = "cool"
r2 = upgrade_response(r1)
is_response(r2)
self.assertEqual(r2.code, r1.code)
self.assertEqual(r2.msg, r1.msg)
# addinfourl with seek wrapper: cached data is not lost
r1 = addinfourl(BytesIO(data), make_headers([]), url)
r1 = seek_wrapper(r1)
self.assertEqual(r1.read(4), b'test')
r2 = upgrade_response(r1)
is_response(r2)
# addinfourl wrapped with HTTPError -- remains an HTTPError of the same subclass (through horrible trickery)
hdrs = make_headers([])
r1 = addinfourl(BytesIO(data), hdrs, url)
class MyHTTPError(mechanize.HTTPError):
pass
r1 = MyHTTPError(url, code, msg, hdrs, r1)
self.assertRaises(AssertionError, is_response, r1)
r2 = upgrade_response(r1)
is_response(r2)
self.assertIsInstance(r2, MyHTTPError)
name = MyHTTPError.__module__ + '.' + MyHTTPError.__name__
self.assertTrue(
repr(r2).startswith(
'<httperror_seek_wrapper ({} instance) at'.format(name)))
# The trickery does not cause double-wrapping
r3 = upgrade_response(r2)
is_response(r3)
self.assertIsNot(r3, r2)
self.assertIs(r3.wrapped, r2.wrapped)
# Test dynamically-created class __repr__ for case where we have the module name
r4 = addinfourl(BytesIO(data), hdrs, url)
r4 = mechanize.HTTPError(url, code, msg, hdrs, r4)
r4 = upgrade_response(r4)
q = '<httperror_seek_wrapper (urllib2.HTTPError instance) at'
if not mechanize.polyglot.is_py2:
q = q.replace('urllib2', 'urllib.error')
self.assertTrue(repr(r4).startswith(q))
def get_wrapper():
from mechanize._response import seek_wrapper
f = BytesIO(text)
wr = seek_wrapper(f)
return wr