Disable cert generation for audit only courses

cms/djangoapps/contentstore/views/certificates.py

@@ -359,7 +359,10 @@ def certificates_list_handler(request, course_key_string):
                     course_id=course.id, include_expired=True
                 ) if mode.slug != 'audit'
             ]
-            if len(course_modes) > 0:
+
+            has_certificate_modes = len(course_modes) > 0
+
+            if has_certificate_modes:
                 certificate_web_view_url = get_lms_link_for_certificate_web_view(
                     user_id=request.user.id,
                     course_key=course_key,
@@ -382,6 +385,7 @@ def certificates_list_handler(request, course_key_string):
                 'course_outline_url': course_outline_url,
                 'upload_asset_url': upload_asset_url,
                 'certificates': certificates,
+                'has_certificate_modes': has_certificate_modes,
                 'course_modes': course_modes,
                 'certificate_web_view_url': certificate_web_view_url,
                 'is_active': is_active,

cms/djangoapps/contentstore/views/tests/test_certificates.py

@@ -195,6 +195,7 @@ class CertificatesBaseTestCase(object):
         self.assertTrue('must have name of the certificate' in context.exception)
 
 
+@ddt.ddt
 @override_settings(FEATURES=FEATURES_WITH_CERTS_ENABLED)
 class CertificatesListHandlerTestCase(EventTestMixin, CourseTestCase, CertificatesBaseTestCase, HelperMethods):
     """
@@ -340,6 +341,40 @@ class CertificatesListHandlerTestCase(EventTestMixin, CourseTestCase, Certificat
         self.assertContains(response, 'verified')
         self.assertNotContains(response, 'audit')
 
+    def test_audit_only_disables_cert(self):
+        """
+        Tests audit course mode is skipped when rendering certificates page.
+        """
+        CourseModeFactory.create(course_id=self.course.id, mode_slug='audit')
+        response = self.client.get_html(
+            self._url(),
+        )
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'This course does not use a mode that offers certificates.')
+        self.assertNotContains(response, 'This module is not enabled.')
+        self.assertNotContains(response, 'Loading')
+
+    @ddt.data(
+        ['audit', 'verified'],
+        ['verified'],
+        ['audit', 'verified', 'credit'],
+        ['verified', 'credit'],
+        ['professional']
+    )
+    def test_non_audit_enables_cert(self, slugs):
+        """
+        Tests audit course mode is skipped when rendering certificates page.
+        """
+        for slug in slugs:
+            CourseModeFactory.create(course_id=self.course.id, mode_slug=slug)
+        response = self.client.get_html(
+            self._url(),
+        )
+        self.assertEqual(response.status_code, 200)
+        self.assertNotContains(response, 'This course does not use a mode that offers certificates.')
+        self.assertNotContains(response, 'This module is not enabled.')
+        self.assertContains(response, 'Loading')
+
     def test_assign_unique_identifier_to_certificates(self):
         """
         Test certificates have unique ids

cms/templates/certificates.html

@@ -30,7 +30,9 @@ CMS.User.isGlobalStaff = '${is_global_staff}'=='True' ? true : false;
 
 <%block name="requirejs">
   require(["js/certificates/factories/certificates_page_factory"], function(CertificatesPageFactory) {
-      CertificatesPageFactory(${escape_json_dumps(certificates) | n}, "${certificate_url}", "${course_outline_url}", ${escape_json_dumps(course_modes) | n}, ${escape_json_dumps(certificate_web_view_url) | n}, ${escape_json_dumps(is_active) | n}, ${escape_json_dumps(certificate_activation_handler_url) | n} );
+      if(${escape_json_dumps(has_certificate_modes)}) {
+          CertificatesPageFactory(${escape_json_dumps(certificates) | n}, "${certificate_url}", "${course_outline_url}", ${escape_json_dumps(course_modes) | n}, ${escape_json_dumps(certificate_web_view_url) | n}, ${escape_json_dumps(is_active) | n}, ${escape_json_dumps(certificate_activation_handler_url) | n} );
+      }
   });
 </%block>
 
@@ -56,6 +58,12 @@ CMS.User.isGlobalStaff = '${is_global_staff}'=='True' ? true : false;
                     ${_("This module is not enabled.")}
                 </p>
             </div>
+          % elif not has_certificate_modes:
+            <div class="notice notice-incontext notice-moduledisabled">
+                <p class="copy">
+                    ${_("This course does not use a mode that offers certificates.")}
+                </p>
+            </div>
           % else:
             <div class="ui-loading">
                 <p><span class="spin"><i class="icon fa fa-refresh" aria-hidden="true"></i></span> <span class="copy">${_("Loading")}</span></p>

common/test/acceptance/tests/studio/test_studio_settings_certificates.py

@@ -3,7 +3,9 @@ Acceptance tests for Studio's Setting pages
 """
 import re
 import uuid
+
 from .base_studio_test import StudioCourseTest
+from ...pages.lms.create_mode import ModeCreationPage
 from ...pages.studio.settings_certificates import CertificatesPage
 from ...pages.studio.settings_advanced import AdvancedSettingsPage
 
@@ -28,6 +30,12 @@ class CertificatesTest(StudioCourseTest):
         )
         self.course_advanced_settings = dict()
 
+        # Add a verified mode to the course
+        ModeCreationPage(
+            self.browser, self.course_id, mode_slug=u'verified', mode_display_name=u'Verified Certificate',
+            min_price=10, suggested_prices='10,20'
+        ).visit()
+
     def make_signatory_data(self, prefix='First'):
         """
         Makes signatory dict which can be used in the tests to create certificates