/usr/share/pyshared/zope/app/testing/functional.py is in python-zope.app.testing 3.10.0-0ubuntu1.
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#
# Copyright (c) 2003 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Functional testing framework for Zope 3.
There should be a file 'ftesting.zcml' in the current directory.
$Id: functional.py 119446 2011-01-07 19:50:06Z mgedmin $
"""
import copy
import doctest
import logging
import os.path
import re
import rfc822
import sys
import traceback
import unittest
from StringIO import StringIO
from Cookie import SimpleCookie
from transaction import abort, commit
from ZODB.DB import DB
from ZODB.DemoStorage import DemoStorage
from ZODB.interfaces import IDatabase
from zope import component
from zope.publisher.interfaces import ISkinnable
from zope.publisher.browser import BrowserRequest
from zope.publisher.http import HTTPRequest
from zope.publisher.publish import publish
from zope.publisher.skinnable import setDefaultSkin
from zope.security.interfaces import Forbidden, Unauthorized
import zope.app.appsetup.product
import zope.app.testing.setup
from zope.app.appsetup.appsetup import multi_database
from zope.app.debug import Debugger
from zope.app.publication.http import HTTPPublication
from zope.app.publication.zopepublication import ZopePublication
from zope.app.publication.httpfactory import chooseClasses
from zope.component.hooks import setSite, getSite
class ResponseWrapper(object):
"""A wrapper that adds several introspective methods to a response."""
def __init__(self, response, path, request, omit=()):
self._response = response
self._path = path
self._request = request
self.omit = omit
self._body = None
def getOutput(self):
"""Returns the full HTTP output (headers + body)"""
body = self.getBody()
omit = self.omit
headers = [x
for x in self._response.getHeaders()
if x[0].lower() not in omit]
headers.sort()
headers = '\n'.join([("%s: %s" % (n, v)) for (n, v) in headers])
statusline = '%s %s' % (self._response._request['SERVER_PROTOCOL'],
self._response.getStatusString())
if body:
return '%s\n%s\n\n%s' % (statusline, headers, body)
else:
return '%s\n%s\n' % (statusline, headers)
def getBody(self):
"""Returns the response body"""
if self._body is None:
self._body = ''.join(self._response.consumeBody())
return self._body
def getPath(self):
"""Returns the path of the request"""
return self._path
def __getattr__(self, attr):
return getattr(self._response, attr)
__str__ = getOutput
class IManagerSetup(zope.interface.Interface):
"""Utility for enabling up a functional testing manager with needed grants
TODO This is an interim solution. It tries to break the dependence
on a particular security policy, however, we need a much better
way of managing functional-testing configurations.
"""
def setUpManager():
"""Set up the manager, zope.mgr
"""
class BaseDatabaseFactory(object):
"""Factory object for passing to appsetup.multi_databases
This class is an internal implementation detail, subject to change
without notice!
It is currently used by FunctionalTestSetUp.__init__ to create the
basic storage(s) containing the data that is common to all tests
in a layer.
The constructor takes the name of the new database, and a
dictionary of storages. The 'open' method creates a new
DemoStorage, and adds it to the storage dictionary under the given
name. Then creates and returns a named DB object using the
storage.
"""
def __init__(self, name, base_storages):
self.name = name
self.base_storages = base_storages
def open(self):
name = self.name
if name in self.base_storages:
raise ValueError("Duplicate database name: %r" % name)
storage = DemoStorage("Memory storage %r" % name)
self.base_storages[name] = storage
return DB(storage, database_name=name)
class DerivedDatabaseFactory(object):
"""Factory object for passing to appsetup.multi_databases
This class is an internal implementation detail, subject to change
without notice!
It is currently used by FunctionalTestSetUp.setUp to create the
derived storage(s) used for each test in a layer.
The constructor takes the name of the new database, and a
dictionary of storages. The 'open' method creates a new
DemoStorage as a wrapper around the storage with the given
name. Then creates and returns a named DB object using the
storage.
"""
def __init__(self, name, base_storages):
self.name = name
self.storage = DemoStorage("Demo storage %r" % name,
base_storages[name])
def open(self):
return DB(self.storage, database_name=self.name)
class FunctionalTestSetup(object):
"""Keeps shared state across several functional test cases."""
__shared_state = {'_init': False}
def __init__(self, config_file=None, database_names=None,
product_config=None):
"""Initializes Zope 3 framework.
Creates a volatile memory storage. Parses Zope3 configuration files.
"""
self.__dict__ = self.__shared_state
if database_names is not None:
database_names = tuple(database_names)
if not self._init:
# Make sure unit tests are cleaned up
zope.app.testing.setup.placefulSetUp()
zope.app.testing.setup.placefulTearDown()
if not config_file:
config_file = 'ftesting.zcml'
if database_names is None:
database_names = ('unnamed',)
self.log = StringIO()
# Make it silent but keep the log available for debugging
logging.root.addHandler(logging.StreamHandler(self.log))
self.old_product_config = copy.deepcopy(
zope.app.appsetup.product.saveConfiguration())
configs = []
if product_config:
configs = zope.app.appsetup.product.loadConfiguration(
StringIO(product_config))
configs = [
zope.app.appsetup.product.FauxConfiguration(name, values)
for name, values in configs.items()]
self.local_product_config = configs
zope.app.appsetup.product.setProductConfigurations(configs)
self._base_storages = {}
self.db = multi_database(
BaseDatabaseFactory(name, self._base_storages)
for name in database_names)[0][0]
# This handles anything added by generations or other bootstrap
# subscribers.
commit()
self.dbstack = []
self.app = Debugger(self.db, config_file)
self.connection = None
self._config_file = config_file
self._product_config = product_config
self._database_names = database_names
self._init = True
# Make a local grant for the test user
setup = component.queryUtility(IManagerSetup)
if setup is not None:
setup.setUpManager()
FunctionalTestSetup().connection = None
elif config_file and config_file != self._config_file:
# Running different tests with different configurations is not
# supported at the moment
raise NotImplementedError('Already configured'
' with a different config file')
elif product_config and product_config != self._product_config:
raise NotImplementedError('Already configured'
' with different product configuration')
elif database_names and database_names != self._database_names:
# Running different tests with different configurations is not
# supported at the moment
raise NotImplementedError('Already configured'
' with different database names')
# BBB: Simulate the old base_storage attribute, but only when not using
# multiple databases. There *is* code in the wild that uses the attribute.
def _get_base_storage(self):
if len(self._database_names) != 1:
raise AttributeError('base_storage')
return self._base_storages[self._database_names[0]]
def _set_base_storage(self, value):
if len(self._database_names) != 1:
raise AttributeError('base_storage')
self._base_storages[self._database_names[0]] = value
base_storage = property(_get_base_storage, _set_base_storage)
def _close_databases(self):
# This is really careful to unregister the databases before attempting
# to close anything. Zope Corporation has a couple of large
# multi-database applications that get bitten if we're not careful
# like this, but we've not been able to write a concise test case yet.
base = component.getGlobalSiteManager()
dbs = []
for name, db in list(component.getUtilitiesFor(IDatabase)):
ok = base.unregisterUtility(db, IDatabase, name)
assert ok
dbs.append(db)
abort()
if self.connection:
self.connection.close()
self.connection = None
for db in dbs:
db.close()
def setUp(self):
"""Prepares for a functional test case."""
# Tear down the old demo storages (if any) and create fresh ones
abort()
self.dbstack.append((self.db, self.connection))
self.connection = None
zope.app.appsetup.product.setProductConfigurations(
self.local_product_config)
self.db = self.app.db = multi_database(
DerivedDatabaseFactory(name, self._base_storages)
for name in self._database_names)[0][0]
def tearDown(self):
"""Cleans up after a functional test case."""
self._close_databases()
self.db, self.connection = self.dbstack.pop()
setSite(None)
def tearDownCompletely(self):
"""Cleans up the setup done by the constructor."""
self._close_databases()
assert self.dbstack == []
zope.app.testing.setup.placefulTearDown()
zope.app.appsetup.product.restoreConfiguration(
self.old_product_config)
self._config_file = False
self._product_config = None
self._database_names = None
self._init = False
def getRootFolder(self):
"""Returns the Zope root folder."""
if not self.connection:
self.connection = self.db.open()
root = self.connection.root()
return root[ZopePublication.root_name]
def getApplication(self):
"""Returns the Zope application instance."""
return self.app
class ZCMLLayer:
"""ZCML-defined test layer
"""
__bases__ = ()
def __init__(self, config_file, module, name, allow_teardown=False,
product_config=None):
self.config_file = config_file
self.__module__ = module
self.__name__ = name
self.allow_teardown = allow_teardown
self.product_config = product_config
def setUp(self):
self.setup = FunctionalTestSetup(
self.config_file, product_config=self.product_config)
def tearDown(self):
self.setup.tearDownCompletely()
if not self.allow_teardown:
# Some ZCML directives change globals but are not accompanied
# with registered CleanUp handlers to undo the changes. Let
# packages which use such directives indicate that they do not
# support tearing down.
raise NotImplementedError
def defineLayer(name, zcml='test.zcml', allow_teardown=False):
"""Helper function for defining layers.
Usage: defineLayer('foo')
"""
globals = sys._getframe(1).f_globals
globals[name] = ZCMLLayer(
os.path.join(os.path.dirname(globals['__file__']), zcml),
globals['__name__'],
name,
allow_teardown=allow_teardown,
)
if os.path.exists(os.path.join('zopeskel', 'etc', 'ftesting.zcml')):
Functional = os.path.join('zopeskel', 'etc', 'ftesting.zcml')
FunctionalNoDevMode = os.path.join('zopeskel', 'etc', 'ftesting-base.zcml')
elif os.path.exists(os.path.join('etc', 'ftesting.zcml')):
Functional = os.path.join('etc', 'ftesting.zcml')
FunctionalNoDevMode = os.path.join('etc', 'ftesting-base.zcml')
else:
# let's hope that the file is in our CWD. If not, we'll get an
# error anyways, but we can't just throw an error if we don't find
# that file. This module might be imported for other things as
# well, not only starting up Zope from ftesting.zcml.
Functional = 'ftesting.zcml'
FunctionalNoDevMode = 'ftesting-base.zcml'
Functional = os.path.abspath(Functional)
FunctionalNoDevMode = os.path.abspath(FunctionalNoDevMode)
Functional = ZCMLLayer(Functional, __name__, 'Functional')
FunctionalNoDevMode = ZCMLLayer(FunctionalNoDevMode, __name__,
'FunctionalNoDevMode')
class FunctionalTestCase(unittest.TestCase):
"""Functional test case."""
layer = Functional
def setUp(self):
"""Prepares for a functional test case."""
super(FunctionalTestCase, self).setUp()
FunctionalTestSetup().setUp()
def tearDown(self):
"""Cleans up after a functional test case."""
FunctionalTestSetup().tearDown()
super(FunctionalTestCase, self).tearDown()
def getRootFolder(self):
"""Returns the Zope root folder."""
return FunctionalTestSetup().getRootFolder()
def commit(self):
commit()
def abort(self):
abort()
class CookieHandler(object):
def __init__(self, *args, **kw):
# Somewhere to store cookies between consecutive requests
self.cookies = SimpleCookie()
super(CookieHandler, self).__init__(*args, **kw)
def httpCookie(self, path):
"""Return self.cookies as an HTTP_COOKIE environment value."""
l = [m.OutputString().split(';')[0] for m in self.cookies.values()
if path.startswith(m['path'])]
return '; '.join(l)
def loadCookies(self, envstring):
self.cookies.load(envstring)
def saveCookies(self, response):
"""Save cookies from the response."""
# Urgh - need to play with the response's privates to extract
# cookies that have been set
# TODO: extend the IHTTPRequest interface to allow access to all
# cookies
# TODO: handle cookie expirations
for k, v in response._cookies.items():
k = k.encode('utf8')
self.cookies[k] = v['value'].encode('utf8')
if 'path' in v:
self.cookies[k]['path'] = v['path']
class BrowserTestCase(CookieHandler, FunctionalTestCase):
"""Functional test case for Browser requests."""
def setSite(self, site):
"""Set the site which will be used to look up local components"""
setSite(site)
def getSite(self):
"""Returns the site which is used to look up local components"""
return getSite()
def makeRequest(self, path='', basic=None, form=None, env={}):
"""Creates a new request object.
Arguments:
path -- the path to be traversed (e.g. "/folder1/index.html")
basic -- basic HTTP authentication credentials ("user:password")
form -- a dictionary emulating a form submission
(Note that field values should be Unicode strings)
env -- a dictionary of additional environment variables
(You can emulate HTTP request header
X-Header: foo
by adding 'HTTP_X_HEADER': 'foo' to env)
"""
environment = {"HTTP_HOST": 'localhost',
"HTTP_COOKIE": self.httpCookie(path)}
environment.update(env)
app = FunctionalTestSetup().getApplication()
request = app._request(path, '',
environment=environment,
basic=basic, form=form,
request=BrowserRequest)
setDefaultSkin(request)
return request
def publish(self, path, basic=None, form=None, env={},
handle_errors=False):
"""Renders an object at a given location.
Arguments are the same as in makeRequest with the following exception:
handle_errors -- if False (default), exceptions will not be caught
if True, exceptions will return a formatted error
page.
Returns the response object enhanced with the following methods:
getOutput() -- returns the full HTTP output as a string
getBody() -- returns the full response body as a string
getPath() -- returns the path used in the request
"""
old_site = self.getSite()
self.setSite(None)
# A cookie header has been sent - ensure that future requests
# in this test also send the cookie, as this is what browsers do.
# We pull it apart and reassemble the header to block cookies
# with invalid paths going through, which may or may not be correct
if 'HTTP_COOKIE' in env:
self.loadCookies(env['HTTP_COOKIE'])
del env['HTTP_COOKIE'] # Added again in makeRequest
request = self.makeRequest(path, basic=basic, form=form, env=env)
if 'HTTP_COOKIE' in env:
self.loadCookies(env['HTTP_COOKIE'])
request = publish(request, handle_errors=handle_errors)
response = ResponseWrapper(request.response, path, request)
self.saveCookies(response)
self.setSite(old_site)
return response
def checkForBrokenLinks(self, body, path, basic=None):
"""Looks for broken links in a page by trying to traverse relative
URIs.
"""
if not body:
return
old_site = self.getSite()
self.setSite(None)
from htmllib import HTMLParser
from formatter import NullFormatter
class SimpleHTMLParser(HTMLParser):
def __init__(self, fmt, base):
HTMLParser.__init__(self, fmt)
self.base = base
def do_base(self, attrs):
self.base = dict(attrs).get('href', self.base)
parser = SimpleHTMLParser(NullFormatter(), path)
parser.feed(body)
parser.close()
base = parser.base
while not base.endswith('/'):
base = base[:-1]
if base.startswith('http://localhost/'):
base = base[len('http://localhost/') - 1:]
errors = []
for a in parser.anchorlist:
if a.startswith('http://localhost/'):
a = a[len('http://localhost/') - 1:]
elif a.find(':') != -1:
# Assume it is an external link
continue
elif not a.startswith('/'):
a = base + a
if a.find('#') != -1:
a = a[:a.index('#')]
# ??? what about queries (/path/to/foo?bar=baz&etc)?
request = None
try:
try:
request = self.makeRequest(a, basic=basic)
publication = request.publication
request.processInputs()
publication.beforeTraversal(request)
object = publication.getApplication(request)
object = request.traverse(object)
publication.afterTraversal(request, object)
except (KeyError, NameError, AttributeError, Unauthorized,
Forbidden):
e = traceback.format_exception_only(
*sys.exc_info()[:2])[-1]
errors.append((a, e.strip()))
finally:
publication.endRequest(request, object)
self.setSite(old_site)
# Make sure we don't have pending changes
abort()
# The request should always be closed to free resources
# held by the request
if request:
request.close()
if errors:
self.fail("%s contains broken links:\n" % path
+ "\n".join([" %s:\t%s" % (a, e) for a, e in errors]))
class HTTPTestCase(FunctionalTestCase):
"""Functional test case for HTTP requests."""
def makeRequest(self, path='', basic=None, form=None, env={},
instream=None):
"""Creates a new request object.
Arguments:
path -- the path to be traversed (e.g. "/folder1/index.html")
basic -- basic HTTP authentication credentials ("user:password")
form -- a dictionary emulating a form submission
(Note that field values should be Unicode strings)
env -- a dictionary of additional environment variables
(You can emulate HTTP request header
X-Header: foo
by adding 'HTTP_X_HEADER': 'foo' to env)
instream -- a stream from where the HTTP request will be read
"""
if instream is None:
instream = ''
environment = {"HTTP_HOST": 'localhost'}
environment.update(env)
app = FunctionalTestSetup().getApplication()
request = app._request(path, instream,
environment=environment,
basic=basic,
form=form,
request=HTTPRequest,
publication=HTTPPublication)
return request
def publish(self, path, basic=None, form=None, env={},
handle_errors=False, request_body=''):
"""Renders an object at a given location.
Arguments are the same as in makeRequest with the following exception:
handle_errors -- if False (default), exceptions will not be caught
if True, exceptions will return a formatted error
page.
Returns the response object enhanced with the following methods:
getOutput() -- returns the full HTTP output as a string
getBody() -- returns the full response body as a string
getPath() -- returns the path used in the request
"""
request = self.makeRequest(path, basic=basic, form=form, env=env,
instream=request_body)
response = ResponseWrapper(request.response, path, request)
publish(request, handle_errors=handle_errors)
return response
headerre = re.compile(r'(\S+): (.+)$')
basicre = re.compile('Basic (.+)?:(.+)?$')
def split_header(header):
return headerre.match(header).group(1, 2)
def auth_header(header):
match = basicre.match(header)
if match:
import base64
u, p = match.group(1, 2)
if u is None:
u = ''
if p is None:
p = ''
auth = base64.encodestring('%s:%s' % (u, p))
return 'Basic %s' % auth[:-1]
return header
def getRootFolder():
return FunctionalTestSetup().getRootFolder()
def sync():
getRootFolder()._p_jar.sync()
# Sample functional test case
class SampleFunctionalTest(BrowserTestCase):
def testRootPage(self):
response = self.publish('/')
self.assertEquals(response.getStatus(), 200)
def testRootPage_preferred_languages(self):
response = self.publish('/', env={'HTTP_ACCEPT_LANGUAGE': 'en'})
self.assertEquals(response.getStatus(), 200)
def testNotExisting(self):
response = self.publish('/nosuchthing', handle_errors=True)
self.assertEquals(response.getStatus(), 404)
def testLinks(self):
response = self.publish('/')
self.assertEquals(response.getStatus(), 200)
self.checkForBrokenLinks(response.consumeBody(), response.getPath())
def sample_test_suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(SampleFunctionalTest))
return suite
class HTTPCaller(CookieHandler):
"""Execute an HTTP request string via the publisher"""
def __call__(self, request_string, handle_errors=True, form=None):
# Commit work done by previous python code.
commit()
# Discard leading white space to make call layout simpler
request_string = request_string.lstrip()
# split off and parse the command line
l = request_string.find('\n')
command_line = request_string[:l].rstrip()
request_string = request_string[l + 1:]
method, path, protocol = command_line.split()
instream = StringIO(request_string)
environment = {"HTTP_COOKIE": self.httpCookie(path),
"HTTP_HOST": 'localhost',
"REQUEST_METHOD": method,
"SERVER_PROTOCOL": protocol,
"REMOTE_ADDR": '127.0.0.1',
}
headers = [split_header(header)
for header in rfc822.Message(instream).headers]
for name, value in headers:
name = ('_'.join(name.upper().split('-')))
if name not in ('CONTENT_TYPE', 'CONTENT_LENGTH'):
name = 'HTTP_' + name
environment[name] = value.rstrip()
auth_key = 'HTTP_AUTHORIZATION'
if auth_key in environment:
environment[auth_key] = auth_header(environment[auth_key])
old_site = getSite()
setSite(None)
request_cls, publication_cls = self.chooseRequestClass(method, path,
environment)
app = FunctionalTestSetup().getApplication()
request = app._request(
path, instream,
environment=environment,
request=request_cls, publication=publication_cls)
if ISkinnable.providedBy(request):
# only ISkinnable requests have skins
setDefaultSkin(request)
if form is not None:
if request.form:
raise ValueError("only one set of form values can be provided")
request.form = form
request = publish(request, handle_errors=handle_errors)
response = ResponseWrapper(
request.response, path, request,
omit=('x-content-type-warning', 'x-powered-by'),
)
self.saveCookies(response)
setSite(old_site)
# sync Python connection:
getRootFolder()._p_jar.sync()
return response
def chooseRequestClass(self, method, path, environment):
"""Choose and return a request class and a publication class"""
# note that `path` is unused by the default implementation (BBB)
return chooseClasses(method, environment)
def FunctionalDocFileSuite(*paths, **kw):
"""Build a functional test suite from a text file."""
kw['package'] = doctest._normalize_module(kw.get('package'))
_prepare_doctest_keywords(kw)
suite = doctest.DocFileSuite(*paths, **kw)
suite.layer = Functional
return suite
def FunctionalDocTestSuite(*paths, **kw):
"""Build a functional test suite from docstrings in a module."""
_prepare_doctest_keywords(kw)
suite = doctest.DocTestSuite(*paths, **kw)
suite.layer = Functional
return suite
def _prepare_doctest_keywords(kw):
globs = kw.setdefault('globs', {})
globs['getRootFolder'] = getRootFolder
globs['sync'] = sync
kwsetUp = kw.get('setUp')
def setUp(test):
test.globs['http'] = HTTPCaller()
FunctionalTestSetup().setUp()
if kwsetUp is not None:
kwsetUp(test)
kw['setUp'] = setUp
kwtearDown = kw.get('tearDown')
def tearDown(test):
if kwtearDown is not None:
kwtearDown(test)
FunctionalTestSetup().tearDown()
kw['tearDown'] = tearDown
if 'optionflags' not in kw:
old = doctest.set_unittest_reportflags(0)
doctest.set_unittest_reportflags(old)
kw['optionflags'] = (old
| doctest.ELLIPSIS
| doctest.REPORT_NDIFF
| doctest.NORMALIZE_WHITESPACE)
|