Checking if CAD exists before using it

common/djangoapps/student/tests/test_certificates.py

@@ -121,19 +121,27 @@ class CertificateDashboardMessageDisplayTest(CertificateDisplayTestBase):
     def _check_message(self, certificate_available_date):
         response = self.client.get(reverse('dashboard'))
 
-        if datetime.datetime.now(UTC) < certificate_available_date:
+        if certificate_available_date is None:
+            self.assertNotContains(response, u"Your certificate will be available on")
+            self.assertNotContains(response, u"View Test_Certificate")
+        elif datetime.datetime.now(UTC) < certificate_available_date:
             self.assertContains(response, u"Your certificate will be available on")
             self.assertNotContains(response, u"View Test_Certificate")
         else:
             self._check_can_download_certificate()
 
-    @ddt.data(False)
+    @ddt.data(True, False, None)
     def test_certificate_available_date(self, past_certificate_available_date):
         cert = self._create_certificate('verified')
         cert.status = CertificateStatuses.downloadable
         cert.save()
 
-        certificate_available_date = PAST_DATE if past_certificate_available_date else FUTURE_DATE
+        if past_certificate_available_date is None:
+            certificate_available_date = None
+        elif past_certificate_available_date:
+            certificate_available_date = PAST_DATE
+        elif not past_certificate_available_date:
+            certificate_available_date = FUTURE_DATE
 
         self.course.certificate_available_date = certificate_available_date
         self.course.save()

lms/templates/dashboard/_dashboard_certificate_information.html

@@ -31,9 +31,9 @@ else:
 %>
 
 % if cert_status['status'] != 'processing':
-  <div class="message message-status ${status_css_class} is-shown">
-    % if not cert_status['certificate_message_viewable']:
-      % if (cert_status['status'] == 'generating' or cert_status['status'] == 'downloadable'):
+  % if not cert_status['certificate_message_viewable']:
+    % if (cert_status['status'] == 'generating' or cert_status['status'] == 'downloadable') and course_overview.certificate_available_date:
+      <div class="message message-status ${status_css_class} is-shown">
         <p class="message-copy">
           <%
             certificate_available_date_string = course_overview.certificate_available_date.strftime('%Y-%m-%dT%H:%M:%S%z')
@@ -42,8 +42,10 @@ else:
           %>
           <span class="info-date-block localized-datetime" data-language="${user_language}" data-timezone="${user_timezone}" data-datetime="${certificate_available_date_string}" data-format=${format} data-string="${container_string}"></span>
         </p>
-      % endif
-    % else:
+      </div>
+    % endif
+  % else:
+    <div class="message message-status ${status_css_class} is-shown">
       <p class="message-copy">${_("Your final grade:")}
         <span class="grade-value">${"{0:.0f}%".format(float(cert_status['grade'])*100)}</span>.
 
@@ -143,7 +145,7 @@ else:
         </div>
       % endif
 
-    % endif
-  </div>
+    </div>
+  % endif
 % endif