def test_linked_in_url_with_cert_name_override(self, cert_mode, expected_cert_name):
        config = LinkedInAddToProfileConfiguration(
            company_identifier='0_mC_o2MizqdtZEmkVXjH4eYwMj4DnkCWrZP_D9',
            enabled=True
        )

        expected_url = (
            'http://www.linkedin.com/profile/add'
            '?_ed=0_mC_o2MizqdtZEmkVXjH4eYwMj4DnkCWrZP_D9&'
            'pfCertificationName={platform_name}+{expected_cert_name}&'
            'pfCertificationUrl=http%3A%2F%2Fs3.edx%2Fcert&'
            'source=o'
        ).format(
            expected_cert_name=expected_cert_name,
            platform_name=quote(settings.PLATFORM_NAME.encode('utf-8'))
        )

        with with_site_configuration_context(configuration=self.SITE_CONFIGURATION):
            actual_url = config.add_to_profile_url(
                self.COURSE_KEY,
                self.COURSE_NAME,
                cert_mode,
                self.CERT_URL
            )

            self.assertEqual(actual_url, expected_url)

    def test_linked_in_url_tracking_code(self):
        config = LinkedInAddToProfileConfiguration(company_identifier="abcd123", trk_partner_name="edx", enabled=True)

        expected_param = urlencode({"trk": u"edx-{course_key}_honor-dashboard".format(course_key=self.COURSE_KEY)})

        actual_url = config.add_to_profile_url(self.COURSE_KEY, self.COURSE_NAME, "honor", self.CERT_URL)

        self.assertIn(expected_param, actual_url)

    def test_post_to_linkedin_microsite(self):
        """
        Verifies behavior for microsites which disables the post to LinkedIn
        feature (for now)
        """
        self._create_certificate("honor")

        config = LinkedInAddToProfileConfiguration(
            company_identifier="0_mC_o2MizqdtZEmkVXjH4eYwMj4DnkCWrZP_D9", enabled=True
        )
        config.save()

        # now we should not see it because we are in a microsite
        self._check_linkedin_visibility(False)

    def test_post_to_linkedin_visibility(self):
        """
        Verifies that the post certificate to linked button appears
        as expected
        """
        self._create_certificate("honor")

        config = LinkedInAddToProfileConfiguration(
            company_identifier="0_mC_o2MizqdtZEmkVXjH4eYwMj4DnkCWrZP_D9", enabled=True
        )
        config.save()

        # now we should see it
        self._check_linkedin_visibility(True)

    def test_linked_in_url(self, cert_mode, expected_cert_name):
        config = LinkedInAddToProfileConfiguration(
            company_identifier="0_mC_o2MizqdtZEmkVXjH4eYwMj4DnkCWrZP_D9", enabled=True
        )

        expected_url = (
            "http://www.linkedin.com/profile/add"
            "?_ed=0_mC_o2MizqdtZEmkVXjH4eYwMj4DnkCWrZP_D9&"
            "pfCertificationName={platform_name}+{expected_cert_name}&"
            "pfCertificationUrl=http%3A%2F%2Fs3.edx%2Fcert&"
            "source=o"
        ).format(expected_cert_name=expected_cert_name, platform_name=quote(settings.PLATFORM_NAME.encode("utf-8")))

        actual_url = config.add_to_profile_url(self.COURSE_KEY, self.COURSE_NAME, cert_mode, self.CERT_URL)

        self.assertEqual(actual_url, expected_url)

def _update_social_context(request, context, course, user, user_certificate, platform_name):
    """
    Updates context dictionary with info required for social sharing.
    """
    share_settings = getattr(settings, 'SOCIAL_SHARING_SETTINGS', {})
    context['facebook_share_enabled'] = share_settings.get('CERTIFICATE_FACEBOOK', False)
    context['facebook_app_id'] = getattr(settings, "FACEBOOK_APP_ID", None)
    context['facebook_share_text'] = share_settings.get(
        'CERTIFICATE_FACEBOOK_TEXT',
        _("I completed the {course_title} course on {platform_name}.").format(
            course_title=context['accomplishment_copy_course_name'],
            platform_name=platform_name
        )
    )
    context['twitter_share_enabled'] = share_settings.get('CERTIFICATE_TWITTER', False)
    context['twitter_share_text'] = share_settings.get(
        'CERTIFICATE_TWITTER_TEXT',
        _("I completed a course on {platform_name}. Take a look at my certificate.").format(
            platform_name=platform_name
        )
    )

    share_url = request.build_absolute_uri(
        reverse(
            'certificates:html_view',
            kwargs=dict(user_id=str(user.id), course_id=unicode(course.id))
        )
    )
    context['share_url'] = share_url
    twitter_url = ''
    if context.get('twitter_share_enabled', False):
        twitter_url = 'https://twitter.com/intent/tweet?text={twitter_share_text}&url={share_url}'.format(
            twitter_share_text=smart_str(context['twitter_share_text']),
            share_url=urllib.quote_plus(smart_str(share_url))
        )
    context['twitter_url'] = twitter_url
    context['linked_in_url'] = None
    # If enabled, show the LinkedIn "add to profile" button
    # Clicking this button sends the user to LinkedIn where they
    # can add the certificate information to their profile.
    linkedin_config = LinkedInAddToProfileConfiguration.current()

    # posting certificates to LinkedIn is not currently
    # supported in microsites/White Labels
    if linkedin_config.enabled and not microsite.is_request_in_microsite():
        context['linked_in_url'] = linkedin_config.add_to_profile_url(
            course.id,
            course.display_name,
            user_certificate.mode,
            smart_str(request.build_absolute_uri(get_certificate_url(
                user_id=user.id,
                course_id=unicode(course.id)
            )))
        )

    def test_linked_in_url(self, cert_mode, expected_cert_name):
        config = LinkedInAddToProfileConfiguration(
            company_identifier='0_mC_o2MizqdtZEmkVXjH4eYwMj4DnkCWrZP_D9',
            enabled=True
        )

        expected_url = (
            'http://www.linkedin.com/profile/add'
            '?_ed=0_mC_o2MizqdtZEmkVXjH4eYwMj4DnkCWrZP_D9&'
            'pfCertificationName={expected_cert_name}&'
            'pfCertificationUrl=http%3A%2F%2Fs3.edx%2Fcert&'
            'source=o'
        ).format(expected_cert_name=expected_cert_name)

        actual_url = config.add_to_profile_url(
            self.COURSE_KEY,
            self.COURSE_NAME,
            cert_mode,
            self.CERT_URL
        )

        self.assertEqual(actual_url, expected_url)

def _update_social_context(request, context, course, user, user_certificate, platform_name):
    """
    Updates context dictionary with info required for social sharing.
    """
    share_settings = microsite.get_value("SOCIAL_SHARING_SETTINGS", settings.SOCIAL_SHARING_SETTINGS)
    context['facebook_share_enabled'] = share_settings.get('CERTIFICATE_FACEBOOK', False)
    context['facebook_app_id'] = microsite.get_value("FACEBOOK_APP_ID", settings.FACEBOOK_APP_ID)
    context['facebook_share_text'] = share_settings.get(
        'CERTIFICATE_FACEBOOK_TEXT',
        _("I completed the {course_title} course on {platform_name}.").format(
            course_title=context['accomplishment_copy_course_name'],
            platform_name=platform_name
        )
    )
    context['twitter_share_enabled'] = share_settings.get('CERTIFICATE_TWITTER', False)
    context['twitter_share_text'] = share_settings.get(
        'CERTIFICATE_TWITTER_TEXT',
        _("I completed a course at {platform_name}. Take a look at my certificate.").format(
            platform_name=platform_name
        )
    )

    share_url = request.build_absolute_uri(get_certificate_url(course_id=course.id, uuid=user_certificate.verify_uuid))
    context['share_url'] = share_url
    twitter_url = ''
    if context.get('twitter_share_enabled', False):
        twitter_url = 'https://twitter.com/intent/tweet?text={twitter_share_text}&url={share_url}'.format(
            twitter_share_text=smart_str(context['twitter_share_text']),
            share_url=urllib.quote_plus(smart_str(share_url))
        )
    context['twitter_url'] = twitter_url
    context['linked_in_url'] = None
    # If enabled, show the LinkedIn "add to profile" button
    # Clicking this button sends the user to LinkedIn where they
    # can add the certificate information to their profile.
    linkedin_config = LinkedInAddToProfileConfiguration.current()
    linkedin_share_enabled = share_settings.get('CERTIFICATE_LINKEDIN', linkedin_config.enabled)
    if linkedin_share_enabled:
        context['linked_in_url'] = linkedin_config.add_to_profile_url(
            course.id,
            course.display_name,
            user_certificate.mode,
            smart_str(share_url)
        )

#.........这里部分代码省略.........
                modified_date=datetime.now().date()
            )
        else:
            return render_to_response(invalid_template_path, context)

    # For any other expected exceptions, kick the user back to the "Invalid" screen
    except (InvalidKeyError, CourseDoesNotExist, User.DoesNotExist):
        return render_to_response(invalid_template_path, context)

    # Badge Request Event Tracking Logic
    if 'evidence_visit' in request.GET:
        try:
            badge = BadgeAssertion.objects.get(user=user, course_id=course_key)
            tracker.emit(
                'edx.badge.assertion.evidence_visited',
                {
                    'user_id': user.id,
                    'course_id': unicode(course_key),
                    'enrollment_mode': badge.mode,
                    'assertion_id': badge.id,
                    'assertion_image_url': badge.data['image'],
                    'assertion_json_url': badge.data['json']['id'],
                    'issuer': badge.data['issuer'],
                }
            )
        except BadgeAssertion.DoesNotExist:
            log.warn(
                "Could not find badge for %s on course %s.",
                user.id,
                course_key,
            )

    # Okay, now we have all of the pieces, time to put everything together

    # Get the active certificate configuration for this course
    # If we do not have an active certificate, we'll need to send the user to the "Invalid" screen
    # Passing in the 'preview' parameter, if specified, will return a configuration, if defined
    active_configuration = get_active_web_certificate(course, request.GET.get('preview'))
    if active_configuration is None:
        return render_to_response(invalid_template_path, context)
    else:
        context['certificate_data'] = active_configuration

    # Append/Override the existing view context values with any mode-specific ConfigurationModel values
    context.update(configuration.get(user_certificate.mode, {}))

    # Append/Override the existing view context values with request-time values
    _update_certificate_context(context, course, user, user_certificate)

    # If enabled, show the LinkedIn "add to profile" button
    # Clicking this button sends the user to LinkedIn where they
    # can add the certificate information to their profile.
    linkedin_config = LinkedInAddToProfileConfiguration.current()
    if linkedin_config.enabled:
        context['linked_in_url'] = linkedin_config.add_to_profile_url(
            course.id,
            course.display_name,
            user_certificate.mode,
            request.build_absolute_uri(get_certificate_url(
                user_id=user.id,
                course_id=unicode(course.id)
            ))
        )

    # Microsites will need to be able to override any hard coded
    # content that was put into the context in the
    # _update_certificate_context() call above. For example the
    # 'company_about_description' talks about edX, which we most likely
    # do not want to keep in a microsite
    #
    # So we need to re-apply any configuration/content that
    # we are sourceing from the database. This is somewhat duplicative of
    # the code at the beginning of this method, but we
    # need the configuration at the top as some error code paths
    # require that to be set up early on in the pipeline
    #
    microsite_config_key = microsite.get_value('microsite_config_key')
    if microsite_config_key:
        context.update(configuration.get(microsite_config_key, {}))

    # track certificate evidence_visited event for analytics when certificate_user and accessing_user are different
    if request.user and request.user.id != user.id:
        emit_certificate_event('evidence_visited', user, course_id, course, {
            'certificate_id': user_certificate.verify_uuid,
            'enrollment_mode': user_certificate.mode,
            'social_network': CertificateSocialNetworks.linkedin
        })

    # Append/Override the existing view context values with any course-specific static values from Advanced Settings
    context.update(course.cert_html_view_overrides)

    # FINALLY, generate and send the output the client
    if settings.FEATURES.get('CUSTOM_CERTIFICATE_TEMPLATES_ENABLED', False):
        custom_template = get_certificate_template(course_key, user_certificate.mode)
        if custom_template:
            template = Template(custom_template)
            context = RequestContext(request, context)
            return HttpResponse(template.render(context))

    return render_to_response("certificates/valid.html", context)

#.........这里部分代码省略.........
                                                "<a href='{verified_cert_url}'> verifying your identity</a>.").format(
        platform_name=platform_name,
        tos_url=context.get('company_tos_url'),
        verified_cert_url=context.get('company_verified_certificate_url')
    )

    context['certificate_verify_title'] = _("How {platform_name} Validates Student Certificates").format(
        platform_name=platform_name
    )

    # Translators:  This text describes the validation mechanism for a certificate file (known as GPG security)
    context['certificate_verify_description'] = _('Certificates issued by {platform_name} are signed by a gpg key so '
                                                  'that they can be validated independently by anyone with the '
                                                  '{platform_name} public key. For independent verification, '
                                                  '{platform_name} uses what is called a '
                                                  '"detached signature"&quot;".').format(platform_name=platform_name)

    context['certificate_verify_urltext'] = _("Validate this certificate for yourself")

    # Translators:  This text describes (at a high level) the mission and charter the edX platform and organization
    context['company_about_description'] = _("{platform_name} offers interactive online classes and MOOCs from the "
                                             "world's best universities, including MIT, Harvard, Berkeley, University "
                                             "of Texas, and many others.  {platform_name} is a non-profit online "
                                             "initiative created by founding partners Harvard and MIT.").format(
        platform_name=platform_name
    )

    context['company_about_title'] = _("About {platform_name}").format(platform_name=platform_name)

    context['company_about_urltext'] = _("Learn more about {platform_name}").format(platform_name=platform_name)

    context['company_courselist_urltext'] = _("Learn with {platform_name}").format(platform_name=platform_name)

    context['company_careers_urltext'] = _("Work at {platform_name}").format(platform_name=platform_name)

    context['company_contact_urltext'] = _("Contact {platform_name}").format(platform_name=platform_name)

    # Translators:  This text appears near the top of the certficate and describes the guarantee provided by edX
    context['document_banner'] = _("{platform_name} acknowledges the following student accomplishment").format(
        platform_name=platform_name
    )

    # Translators:  This text represents the verification of the certificate
    context['document_meta_description'] = _('This is a valid {platform_name} certificate for {user_name}, '
                                             'who participated in {partner_name} {course_number}').format(
        platform_name=platform_name,
        user_name=user_fullname,
        partner_name=course.org,
        course_number=course.number
    )

    # Translators:  This text is bound to the HTML 'title' element of the page and appears in the browser title bar
    context['document_title'] = _("{partner_name} {course_number} Certificate | {platform_name}").format(
        partner_name=course.org,
        course_number=course.number,
        platform_name=platform_name
    )

    # Translators:  This text fragment appears after the student's name (displayed in a large font) on the certificate
    # screen.  The text describes the accomplishment represented by the certificate information displayed to the user
    context['accomplishment_copy_description_full'] = _("successfully completed, received a passing grade, and was "
                                                        "awarded a {platform_name} {certificate_type} "
                                                        "Certificate of Completion in ").format(
        platform_name=platform_name,
        certificate_type=context.get("certificate_type")
    )

    certificate_type_description = get_certificate_description(user_certificate.mode, certificate_type, platform_name)
    if certificate_type_description:
        context['certificate_type_description'] = certificate_type_description

    # If enabled, show the LinkedIn "add to profile" button
    # Clicking this button sends the user to LinkedIn where they
    # can add the certificate information to their profile.
    linkedin_config = LinkedInAddToProfileConfiguration.current()
    if linkedin_config.enabled:
        context['linked_in_url'] = linkedin_config.add_to_profile_url(
            course.id,
            course.display_name,
            user_certificate.mode,
            get_certificate_url(
                user_id=user.id,
                course_id=course.id.to_deprecated_string()
            )
        )

    # Translators: This line is displayed to a user who has completed a course and achieved a certification
    context['accomplishment_banner_opening'] = _("{fullname}, you've earned a certificate!").format(
        fullname=user_fullname
    )

    # Translators: This line congratulates the user and instructs them to share their accomplishment on social networks
    context['accomplishment_banner_congrats'] = _("Congratulations! This page summarizes all of the details of what "
                                                  "you've accomplished. Show it off to family, friends, and colleagues "
                                                  "in your social and professional networks.")

    # Translators: This line leads the reader to understand more about the certificate that a student has been awarded
    context['accomplishment_copy_more_about'] = _("More about {fullname}'s accomplishment").format(
        fullname=user_fullname
    )

def _cert_info(user, course_overview, cert_status):
    """
    Implements the logic for cert_info -- split out for testing.

    Arguments:
        user (User): A user.
        course_overview (CourseOverview): A course.
    """
    # simplify the status for the template using this lookup table
    template_state = {
        CertificateStatuses.generating: 'generating',
        CertificateStatuses.downloadable: 'downloadable',
        CertificateStatuses.notpassing: 'notpassing',
        CertificateStatuses.restricted: 'restricted',
        CertificateStatuses.auditing: 'auditing',
        CertificateStatuses.audit_passing: 'auditing',
        CertificateStatuses.audit_notpassing: 'auditing',
        CertificateStatuses.unverified: 'unverified',
    }

    certificate_earned_but_not_available_status = 'certificate_earned_but_not_available'
    default_status = 'processing'

    default_info = {
        'status': default_status,
        'show_survey_button': False,
        'can_unenroll': True,
    }

    if cert_status is None:
        return default_info

    status = template_state.get(cert_status['status'], default_status)
    is_hidden_status = status in ('unavailable', 'processing', 'generating', 'notpassing', 'auditing')

    if (
        not certificates_viewable_for_course(course_overview) and
        (status in CertificateStatuses.PASSED_STATUSES) and
        course_overview.certificate_available_date
    ):
        status = certificate_earned_but_not_available_status

    if (
        course_overview.certificates_display_behavior == 'early_no_info' and
        is_hidden_status
    ):
        return default_info

    status_dict = {
        'status': status,
        'mode': cert_status.get('mode', None),
        'linked_in_url': None,
        'can_unenroll': status not in DISABLE_UNENROLL_CERT_STATES,
    }

    if status != default_status and course_overview.end_of_course_survey_url is not None:
        status_dict.update({
            'show_survey_button': True,
            'survey_url': process_survey_link(course_overview.end_of_course_survey_url, user)})
    else:
        status_dict['show_survey_button'] = False

    if status == 'downloadable':
        # showing the certificate web view button if certificate is downloadable state and feature flags are enabled.
        if has_html_certificates_enabled(course_overview):
            if course_overview.has_any_active_web_certificate:
                status_dict.update({
                    'show_cert_web_view': True,
                    'cert_web_view_url': get_certificate_url(course_id=course_overview.id, uuid=cert_status['uuid'])
                })
            else:
                # don't show download certificate button if we don't have an active certificate for course
                status_dict['status'] = 'unavailable'
        elif 'download_url' not in cert_status:
            log.warning(
                u"User %s has a downloadable cert for %s, but no download url",
                user.username,
                course_overview.id
            )
            return default_info
        else:
            status_dict['download_url'] = cert_status['download_url']

            # If enabled, show the LinkedIn "add to profile" button
            # Clicking this button sends the user to LinkedIn where they
            # can add the certificate information to their profile.
            linkedin_config = LinkedInAddToProfileConfiguration.current()

            # posting certificates to LinkedIn is not currently
            # supported in White Labels
            if linkedin_config.enabled and not theming_helpers.is_request_in_themed_site():
                status_dict['linked_in_url'] = linkedin_config.add_to_profile_url(
                    course_overview.id,
                    course_overview.display_name,
                    cert_status.get('mode'),
                    cert_status['download_url']
                )

    if status in {'generating', 'downloadable', 'notpassing', 'restricted', 'auditing', 'unverified'}:
        cert_grade_percent = -1
#.........这里部分代码省略.........