Synnefo

# -*- coding: utf-8 -*-

# Copyright 2011 GRNET S.A. All rights reserved.

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import urlparse

import urllib

from astakos.im.tests.common import *

ui_url = lambda url: '/' + astakos_settings.BASE_PATH + '/ui/%s' % url

class ShibbolethTests(TestCase):

    """

    Testing shibboleth authentication.

    """

    def setUp(self):

        self.client = ShibbolethClient()

        astakos_settings.IM_MODULES = ['local', 'shibboleth']

        astakos_settings.MODERATION_ENABLED = True

    def tearDown(self):

        AstakosUser.objects.all().delete()

    @im_settings(FORCE_PROFILE_UPDATE=False)

    def test_create_account(self):

        client = ShibbolethClient()

        # shibboleth views validation

        # eepn required

        r = client.get(ui_url('login/shibboleth?'), follow=True)

        self.assertContains(r, messages.SHIBBOLETH_MISSING_EPPN % {

            'domain': astakos_settings.BASE_HOST,

            'contact_email': settings.CONTACT_EMAIL

        })

        client.set_tokens(eppn="kpapeppn")

        astakos_settings.SHIBBOLETH_REQUIRE_NAME_INFO = True

        # shibboleth user info required

        r = client.get(ui_url('login/shibboleth?'), follow=True)

        self.assertContains(r, messages.SHIBBOLETH_MISSING_NAME)

        astakos_settings.SHIBBOLETH_REQUIRE_NAME_INFO = False

        # shibboleth logged us in

        client.set_tokens(mail="kpap@synnefo.org", eppn="kpapeppn",

                          cn="Kostas Papadimitriou",

                          ep_affiliation="Test Affiliation")

        r = client.get(ui_url('login/shibboleth?'), follow=True)

        token = PendingThirdPartyUser.objects.get().token

        self.assertRedirects(r, ui_url('signup?third_party_token=%s' % token))

        self.assertEqual(r.status_code, 200)

        # a new pending user created

        pending_user = PendingThirdPartyUser.objects.get(

            third_party_identifier="kpapeppn")

        self.assertEqual(PendingThirdPartyUser.objects.count(), 1)

        # keep the token for future use

        token = pending_user.token

        # from now on no shibboleth headers are sent to the server

        client.reset_tokens()

        # this is the old way, it should fail, to avoid pending user take over

        r = client.get(ui_url('shibboleth/signup/%s' % pending_user.username))

        self.assertEqual(r.status_code, 404)

        # this is the signup unique url associated with the pending user

        # created

        r = client.get(ui_url('signup/?third_party_token=%s' % token))

        identifier = pending_user.third_party_identifier

        post_data = {'third_party_identifier': identifier,

                     'first_name': 'Kostas',

                     'third_party_token': token,

                     'last_name': 'Mitroglou',

                     'provider': 'shibboleth'}

        signup_url = reverse('signup')

        # invlid email

        post_data['email'] = 'kpap'

        r = client.post(signup_url, post_data)

        self.assertContains(r, token)

        # existing email

        existing_user = get_local_user('test@test.com')

        post_data['email'] = 'test@test.com'

        r = client.post(signup_url, post_data)

        self.assertContains(r, messages.EMAIL_USED)

        existing_user.delete()

        # and finally a valid signup

        post_data['email'] = 'kpap@synnefo.org'

        r = client.post(signup_url, post_data, follow=True)

        self.assertContains(r, messages.VERIFICATION_SENT)

        # entires commited as expected

        self.assertEqual(AstakosUser.objects.count(), 1)

        self.assertEqual(AstakosUserAuthProvider.objects.count(), 1)

        self.assertEqual(PendingThirdPartyUser.objects.count(), 0)

        # provider info stored

        provider = AstakosUserAuthProvider.objects.get(module="shibboleth")

        self.assertEqual(provider.affiliation, 'Test Affiliation')

        self.assertEqual(provider.info['email'], u'kpap@synnefo.org')

        self.assertEqual(provider.info['eppn'], u'kpapeppn')

        self.assertEqual(provider.info['name'], u'Kostas Papadimitriou')

        self.assertTrue('headers' in provider.info)

        # login (not activated yet)

        client.set_tokens(mail="kpap@synnefo.org", eppn="kpapeppn",

                          cn="Kostas Papadimitriou")

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        self.assertContains(r, 'is pending moderation')

        # admin activates the user

        u = AstakosUser.objects.get(username="kpap@synnefo.org")

        backend = activation_backends.get_backend()

        activation_result = backend.verify_user(u, u.verification_code)

        activation_result = backend.accept_user(u)

        self.assertFalse(activation_result.is_error())

        backend.send_result_notifications(activation_result, u)

        self.assertEqual(u.is_active, True)

        # we see our profile

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        self.assertRedirects(r, ui_url('landing'))

        self.assertEqual(r.status_code, 200)

    def test_existing(self):

        """

        Test adding of third party login to an existing account

        """

        # this is our existing user

        existing_user = get_local_user('kpap@synnefo.org')

        existing_inactive = get_local_user('kpap-inactive@synnefo.org')

        existing_inactive.is_active = False

        existing_inactive.save()

        existing_unverified = get_local_user('kpap-unverified@synnefo.org')

        existing_unverified.is_active = False

        existing_unverified.activation_sent = None

        existing_unverified.email_verified = False

        existing_unverified.is_verified = False

        existing_unverified.save()

        client = ShibbolethClient()

        # shibboleth logged us in, notice that we use different email

        client.set_tokens(mail="kpap@shibboleth.gr", eppn="kpapeppn",

                          cn="Kostas Papadimitriou", )

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        # a new pending user created

        pending_user = PendingThirdPartyUser.objects.get()

        token = pending_user.token

        self.assertEqual(PendingThirdPartyUser.objects.count(), 1)

        pending_key = pending_user.token

        client.reset_tokens()

        self.assertRedirects(r, ui_url("signup?third_party_token=%s" % token))

        form = r.context['login_form']

        signupdata = copy.copy(form.initial)

        signupdata['email'] = 'kpap@synnefo.org'

        signupdata['third_party_token'] = token

        signupdata['provider'] = 'shibboleth'

        signupdata.pop('id', None)

        # the email exists to another user

        r = client.post(ui_url("signup"), signupdata)

        self.assertContains(r, "There is already an account with this email "

                               "address")

        # change the case, still cannot create

        signupdata['email'] = 'KPAP@synnefo.org'

        r = client.post(ui_url("signup"), signupdata)

        self.assertContains(r, "There is already an account with this email "

                               "address")

        # inactive user

        signupdata['email'] = 'KPAP-inactive@synnefo.org'

        r = client.post(ui_url("signup"), signupdata)

        self.assertContains(r, "There is already an account with this email "

                               "address")

        # unverified user, this should pass, old entry will be deleted

        signupdata['email'] = 'KAPAP-unverified@synnefo.org'

        r = client.post(ui_url("signup"), signupdata)

        post_data = {'password': 'password',

                     'username': 'kpap@synnefo.org'}

        r = client.post(ui_url('local'), post_data, follow=True)

        self.assertTrue(r.context['request'].user.is_authenticated())

        client.set_tokens(mail="kpap@shibboleth.gr", eppn="kpapeppn",

                          cn="Kostas Papadimitriou", )

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        self.assertContains(r, "enabled for this account")

        client.reset_tokens()

        user = existing_user

        self.assertTrue(user.has_auth_provider('shibboleth'))

        self.assertTrue(user.has_auth_provider('local',

                                               auth_backend='astakos'))

        client.logout()

        # look Ma, i can login with both my shibboleth and local account

        client.set_tokens(mail="kpap@shibboleth.gr", eppn="kpapeppn",

                          cn="Kostas Papadimitriou")

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        self.assertTrue(r.context['request'].user.is_authenticated())

        self.assertTrue(r.context['request'].user.email == "kpap@synnefo.org")

        self.assertRedirects(r, ui_url('landing'))

        self.assertEqual(r.status_code, 200)

        client.logout()

        client.reset_tokens()

        # logged out

        r = client.get(ui_url("profile"), follow=True)

        self.assertFalse(r.context['request'].user.is_authenticated())

        # login with local account also works

        post_data = {'password': 'password',

                     'username': 'kpap@synnefo.org'}

        r = self.client.post(ui_url('local'), post_data, follow=True)

        self.assertTrue(r.context['request'].user.is_authenticated())

        self.assertTrue(r.context['request'].user.email == "kpap@synnefo.org")

        self.assertRedirects(r, ui_url('landing'))

        self.assertEqual(r.status_code, 200)

        # cannot add the same eppn

        client.set_tokens(mail="secondary@shibboleth.gr", eppn="kpapeppn",

                          cn="Kostas Papadimitriou", )

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        self.assertRedirects(r, ui_url('landing'))

        self.assertTrue(r.status_code, 200)

        self.assertEquals(existing_user.auth_providers.count(), 2)

        # only one allowed by default

        client.set_tokens(mail="secondary@shibboleth.gr", eppn="kpapeppn2",

                          cn="Kostas Papadimitriou", ep_affiliation="affil2")

        prov = auth_providers.get_provider('shibboleth')

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        self.assertContains(r, "Failed to add")

        self.assertRedirects(r, ui_url('profile'))

        self.assertTrue(r.status_code, 200)

        self.assertEquals(existing_user.auth_providers.count(), 2)

        client.logout()

        client.reset_tokens()

        # cannot login with another eppn

        client.set_tokens(mail="kpap@synnefo.org", eppn="kpapeppninvalid",

                          cn="Kostas Papadimitriou")

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        self.assertFalse(r.context['request'].user.is_authenticated())

        # cannot

        # lets remove local password

        user = AstakosUser.objects.get(username="kpap@synnefo.org",

                                       email="kpap@synnefo.org")

        remove_local_url = user.get_auth_provider('local').get_remove_url

        remove_shibbo_url = user.get_auth_provider('shibboleth',

                                                   'kpapeppn').get_remove_url

        client.set_tokens(mail="kpap@shibboleth.gr", eppn="kpapeppn",

                          cn="Kostas Papadimtriou")

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        client.reset_tokens()

        # only POST is allowed (for CSRF protection)

        r = client.get(remove_local_url, follow=True)

        self.assertEqual(r.status_code, 405)

        r = client.post(remove_local_url, follow=True)

        # 2 providers left

        self.assertEqual(user.auth_providers.count(), 1)

        # cannot remove last provider

        r = client.post(remove_shibbo_url)

        self.assertEqual(r.status_code, 403)

        self.client.logout()

        # cannot login using local credentials (notice we use another client)

        post_data = {'password': 'password',

                     'username': 'kpap@synnefo.org'}

        r = self.client.post(ui_url('local'), post_data, follow=True)

        self.assertFalse(r.context['request'].user.is_authenticated())

        # we can reenable the local provider by setting a password

        r = client.get(ui_url("password_change"), follow=True)

        r = client.post(ui_url("password_change"), {'new_password1': '111',

                                                    'new_password2': '111'},

                        follow=True)

        user = r.context['request'].user

        self.assertTrue(user.has_auth_provider('local'))

        self.assertTrue(user.has_auth_provider('shibboleth'))

        self.assertTrue(user.check_password('111'))

        self.assertTrue(user.has_usable_password())

        # change password via profile form

        r = client.post(ui_url("profile"), {

            'old_password': '111',

            'new_password': '',

            'new_password2': '',

            'change_password': 'on',

        }, follow=False)

        self.assertEqual(r.status_code, 200)

        self.assertFalse(r.context['profile_form'].is_valid())

        self.client.logout()

        # now we can login

        post_data = {'password': '111',

                     'username': 'kpap@synnefo.org'}

        r = self.client.post(ui_url('local'), post_data, follow=True)

        self.assertTrue(r.context['request'].user.is_authenticated())

        client.reset_tokens()

        # we cannot take over another shibboleth identifier

        user2 = get_local_user('another@synnefo.org')

        user2.add_auth_provider('shibboleth', identifier='existingeppn')

        # login

        client.set_tokens(mail="kpap@shibboleth.gr", eppn="kpapeppn",

                          cn="Kostas Papadimitriou")

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        # try to assign existing shibboleth identifier of another user

        client.set_tokens(mail="kpap_second@shibboleth.gr",

                          eppn="existingeppn", cn="Kostas Papadimitriou")

        r = client.get(ui_url("login/shibboleth?"), follow=True)

        self.assertContains(r, "is already in use")

class TestLocal(TestCase):

    def setUp(self):

        settings.ADMINS = (('admin', 'support@cloud.synnefo.org'),)

        settings.SERVER_EMAIL = 'no-reply@synnefo.org'

        self._orig_moderation = astakos_settings.MODERATION_ENABLED

        settings.ASTAKOS_MODERATION_ENABLED = True

    def tearDown(self):

        settings.ASTAKOS_MODERATION_ENABLED = self._orig_moderation

        AstakosUser.objects.all().delete()

    @im_settings(RECAPTCHA_ENABLED=True, RATELIMIT_RETRIES_ALLOWED=3)

    def test_login_ratelimit(self):

        credentials = {'username': 'γιού τι έφ', 'password': 'password'}

        r = self.client.post(ui_url('local'), credentials, follow=True)

        fields = r.context['login_form'].fields.keyOrder

        self.assertFalse('recaptcha_challenge_field' in fields)

        r = self.client.post(ui_url('local'), credentials, follow=True)

        fields = r.context['login_form'].fields.keyOrder

        self.assertFalse('recaptcha_challenge_field' in fields)

        r = self.client.post(ui_url('local'), credentials, follow=True)

        fields = r.context['login_form'].fields.keyOrder

        self.assertTrue('recaptcha_challenge_field' in fields)

    def test_no_moderation(self):

        # disable moderation

        astakos_settings.MODERATION_ENABLED = False

        # create a new user

        r = self.client.get(ui_url("signup"))

        self.assertEqual(r.status_code, 200)

        data = {'email': 'kpap@synnefo.org', 'password1': 'password',

                'password2': 'password', 'first_name': 'Kostas',

                'last_name': 'Mitroglou', 'provider': 'local'}

        r = self.client.post(ui_url("signup"), data)

        # user created

        self.assertEqual(AstakosUser.objects.count(), 1)

        user = AstakosUser.objects.get(username="kpap@synnefo.org",

                                       email="kpap@synnefo.org")

        self.assertEqual(user.username, 'kpap@synnefo.org')

        self.assertEqual(user.has_auth_provider('local'), True)

        self.assertFalse(user.is_active)

        # user (but not admin) gets notified

        self.assertEqual(len(get_mailbox('support@cloud.synnefo.org')), 0)

        self.assertEqual(len(get_mailbox('kpap@synnefo.org')), 1)

        astakos_settings.MODERATION_ENABLED = True

    def test_email_case(self):

        data = {

            'email': 'kPap@synnefo.org',

            'password1': '1234',

            'password2': '1234'

        }

        form = forms.LocalUserCreationForm(data)

        self.assertTrue(form.is_valid())

        user = form.save()

        form.store_user(user, {})

        u = AstakosUser.objects.get()

        self.assertEqual(u.email, 'kPap@synnefo.org')

        self.assertEqual(u.username, 'kpap@synnefo.org')

        u.is_active = True

        u.email_verified = True

        u.save()

        data = {'username': 'kpap@synnefo.org', 'password': '1234'}

        login = forms.LoginForm(data=data)

        self.assertTrue(login.is_valid())

        data = {'username': 'KpaP@synnefo.org', 'password': '1234'}

        login = forms.LoginForm(data=data)

        self.assertTrue(login.is_valid())

        data = {

            'email': 'kpap@synnefo.org',

            'password1': '1234',

            'password2': '1234'

        }

        form = forms.LocalUserCreationForm(data)

        self.assertFalse(form.is_valid())

    @im_settings(HELPDESK=(('support', 'support@synnefo.org'),),

                 FORCE_PROFILE_UPDATE=False, MODERATION_ENABLED=True)

    def test_local_provider(self):

        self.helpdesk_email = astakos_settings.HELPDESK[0][1]

        # create a user

        r = self.client.get(ui_url("signup"))

        self.assertEqual(r.status_code, 200)

        data = {'email': 'kpap@synnefo.org', 'password1': 'password',

                'password2': 'password', 'first_name': 'Kostas',

                'last_name': 'Mitroglou', 'provider': 'local'}

        r = self.client.post(ui_url("signup"), data)

        # user created

        self.assertEqual(AstakosUser.objects.count(), 1)

        user = AstakosUser.objects.get(username="kpap@synnefo.org",

                                       email="kpap@synnefo.org")

        self.assertEqual(user.username, 'kpap@synnefo.org')

        self.assertEqual(user.has_auth_provider('local'), True)

        self.assertFalse(user.is_active)  # not activated

        self.assertFalse(user.email_verified)  # not verified

        self.assertTrue(user.activation_sent)  # activation automatically sent

        self.assertFalse(user.moderated)

        self.assertFalse(user.email_verified)

        # admin gets notified and activates the user from the command line

        self.assertEqual(len(get_mailbox('kpap@synnefo.org')), 1)

        r = self.client.post(ui_url('local'), {'username': 'kpap@synnefo.org',

                                               'password': 'password'},

                             follow=True)

        self.assertContains(r, messages.VERIFICATION_SENT)

        backend = activation_backends.get_backend()

        user = AstakosUser.objects.get(username="kpap@synnefo.org")

        backend.send_user_verification_email(user)

        # user activation fields updated and user gets notified via email

        user = AstakosUser.objects.get(pk=user.pk)

        self.assertTrue(user.activation_sent)

        self.assertFalse(user.email_verified)

        self.assertFalse(user.is_active)

        self.assertEqual(len(get_mailbox('kpap@synnefo.org')), 2)

        # user forgot she got registered and tries to submit registration

        # form. Notice the upper case in email

        data = {'email': 'KPAP@synnefo.org', 'password1': 'password',

                'password2': 'password', 'first_name': 'Kostas',

                'last_name': 'Mitroglou', 'provider': 'local'}

        r = self.client.post(ui_url("signup"), data, follow=True)

        self.assertRedirects(r, reverse('login'))

        self.assertContains(r, messages.VERIFICATION_SENT)

        user = AstakosUser.objects.get()

        # previous user replaced

        self.assertTrue(user.activation_sent)

        self.assertFalse(user.email_verified)

        self.assertFalse(user.is_active)

        self.assertEqual(len(get_mailbox('KPAP@synnefo.org')), 1)

        # hmmm, email exists; lets request a password change

        r = self.client.get(ui_url('local/password_reset'))

        self.assertEqual(r.status_code, 200)

        data = {'email': 'kpap@synnefo.org'}

        r = self.client.post(ui_url('local/password_reset'), data, follow=True)

        # she can't because account is not active yet

        self.assertContains(r, 'pending activation')

        # moderation is enabled and an activation email has already been sent

        # so user can trigger resend of the activation email

        r = self.client.get(ui_url('send/activation/%d' % user.pk),

                            follow=True)

        self.assertContains(r, 'has been sent to your email address.')

        self.assertEqual(len(get_mailbox('KPAP@synnefo.org')), 2)

        # also she cannot login

        data = {'username': 'kpap@synnefo.org', 'password': 'password'}

        r = self.client.post(ui_url('local'), data, follow=True)

        self.assertContains(r, 'Resend activation')

        self.assertFalse(r.context['request'].user.is_authenticated())

        self.assertFalse('_pithos2_a' in self.client.cookies)

        # user sees the message and resends activation

        r = self.client.get(ui_url('send/activation/%d' % user.pk),

                            follow=True)

        self.assertEqual(len(get_mailbox('KPAP@synnefo.org')), 3)

        # logged in user cannot activate another account

        tmp_user = get_local_user("test_existing_user@synnefo.org")

        tmp_client = Client()

        tmp_client.login(username="test_existing_user@synnefo.org",

                         password="password")

        r = tmp_client.get(user.get_activation_url(), follow=True)

        self.assertContains(r, messages.LOGGED_IN_WARNING)

        r = self.client.get(user.get_activation_url(), follow=True)

        # previous code got invalidated

        self.assertEqual(r.status_code, 404)

        user = AstakosUser.objects.get(pk=user.pk)

        self.assertEqual(len(get_mailbox(self.helpdesk_email)), 0)

        r = self.client.get(user.get_activation_url(), follow=True)

        self.assertRedirects(r, reverse('login'))

        # user sees that account is pending approval from admins

        self.assertContains(r, messages.NOTIFICATION_SENT)

        self.assertEqual(len(get_mailbox(self.helpdesk_email)), 1)

        user = AstakosUser.objects.get(email="KPAP@synnefo.org")

        result = backend.handle_moderation(user)

        backend.send_result_notifications(result, user)

        self.assertEqual(len(get_mailbox('KPAP@synnefo.org')), 4)

        self.assertEqual(len(get_mailbox(self.helpdesk_email)), 2)

        user = AstakosUser.objects.get(email="KPAP@synnefo.org")

        r = self.client.get(ui_url('profile'), follow=True)

        self.assertFalse(r.context['request'].user.is_authenticated())

        self.assertFalse('_pithos2_a' in self.client.cookies)

        self.assertEqual(len(get_mailbox('KPAP@synnefo.org')), 4)

        user = AstakosUser.objects.get(pk=user.pk)

        r = self.client.post(ui_url('local'), {'username': 'kpap@synnefo.org',

                                               'password': 'password'},

                             follow=True)

        # user activated and logged in, token cookie set

        self.assertTrue(r.context['request'].user.is_authenticated())

        self.assertTrue('_pithos2_a' in self.client.cookies)

        cookies = self.client.cookies

        self.assertTrue(quote(user.auth_token) in

                        cookies.get('_pithos2_a').value)

        r = self.client.get(ui_url('logout'), follow=True)

        r = self.client.get(ui_url(''), follow=True)

        self.assertRedirects(r, ui_url('login'))

        # user logged out, token cookie removed

        self.assertFalse(r.context['request'].user.is_authenticated())

        self.assertFalse(self.client.cookies.get('_pithos2_a').value)

        #https://docs.djangoproject.com/en/dev/topics/testing/#persistent-state

        del self.client.cookies['_pithos2_a']

        # user can login

        r = self.client.post(ui_url('local'), {'username': 'kpap@synnefo.org',

                                               'password': 'password'},

                             follow=True)

        self.assertTrue(r.context['request'].user.is_authenticated())

        self.assertTrue('_pithos2_a' in self.client.cookies)

        cookies = self.client.cookies

        self.assertTrue(quote(user.auth_token) in

                        cookies.get('_pithos2_a').value)

        self.client.get(ui_url('logout'), follow=True)

        # user forgot password

        old_pass = user.password

        r = self.client.get(ui_url('local/password_reset'))

        self.assertEqual(r.status_code, 200)

        r = self.client.post(ui_url('local/password_reset'),

                             {'email': 'kpap@synnefo.org'})

        self.assertEqual(r.status_code, 302)

        # email sent

        self.assertEqual(len(get_mailbox('KPAP@synnefo.org')), 5)

        # user visits change password link

        user = AstakosUser.objects.get(pk=user.pk)

        r = self.client.get(user.get_password_reset_url())

        r = self.client.post(user.get_password_reset_url(),

                             {'new_password1': 'newpass',

                              'new_password2': 'newpass'})

        user = AstakosUser.objects.get(pk=user.pk)

        self.assertNotEqual(old_pass, user.password)

        # old pass is not usable

        r = self.client.post(ui_url('local'), {'username': 'kpap@synnefo.org',

                                               'password': 'password'})

        self.assertContains(r, 'Please enter a correct username and password')

        r = self.client.post(ui_url('local'), {'username': 'kpap@synnefo.org',

                                               'password': 'newpass'},

                             follow=True)

        self.assertTrue(r.context['request'].user.is_authenticated())

        self.client.logout()

        # tests of special local backends

        user = AstakosUser.objects.get(pk=user.pk)

        user.auth_providers.filter(module='local').update(auth_backend='ldap')

        user.save()

        # non astakos local backends do not support password reset

        r = self.client.get(ui_url('local/password_reset'))

        self.assertEqual(r.status_code, 200)

        r = self.client.post(ui_url('local/password_reset'),

                             {'email': 'kpap@synnefo.org'})

        # she can't because account is not active yet

        self.assertContains(r, "Changing password is not")

class UserActionsTests(TestCase):

    def test_email_change(self):

        # to test existing email validation

        get_local_user('existing@synnefo.org')

        # local user

        user = get_local_user('kpap@synnefo.org')

        # login as kpap

        self.client.login(username='kpap@synnefo.org', password='password')

        r = self.client.get(ui_url('profile'), follow=True)

        user = r.context['request'].user

        self.assertTrue(user.is_authenticated())

        # change email is enabled

        r = self.client.get(ui_url('email_change'))

        self.assertEqual(r.status_code, 200)

        self.assertFalse(user.email_change_is_pending())

        # request email change to an existing email fails

        data = {'new_email_address': 'existing@synnefo.org'}

        r = self.client.post(ui_url('email_change'), data)

        self.assertContains(r, messages.EMAIL_USED)

        # proper email change

        data = {'new_email_address': 'kpap@gmail.com'}

        r = self.client.post(ui_url('email_change'), data, follow=True)

        self.assertRedirects(r, ui_url('profile'))

        self.assertContains(r, messages.EMAIL_CHANGE_REGISTERED)

        change1 = EmailChange.objects.get()

        # user sees a warning

        r = self.client.get(ui_url('email_change'))

        self.assertEqual(r.status_code, 200)

        self.assertContains(r, messages.PENDING_EMAIL_CHANGE_REQUEST)

        self.assertTrue(user.email_change_is_pending())

        # link was sent

        self.assertEqual(len(get_mailbox('kpap@synnefo.org')), 0)

        self.assertEqual(len(get_mailbox('kpap@gmail.com')), 1)

        # proper email change

        data = {'new_email_address': 'kpap@yahoo.com'}

        r = self.client.post(ui_url('email_change'), data, follow=True)

        self.assertRedirects(r, ui_url('profile'))

        self.assertContains(r, messages.EMAIL_CHANGE_REGISTERED)

        self.assertEqual(len(get_mailbox('kpap@synnefo.org')), 0)

        self.assertEqual(len(get_mailbox('kpap@yahoo.com')), 1)

        change2 = EmailChange.objects.get()

        r = self.client.get(change1.get_url())

        self.assertEquals(r.status_code, 404)

        self.client.logout()

        invalid_client = Client()