Learner certificates should not be findable before the available date

LEARNER-3298

common/test/acceptance/tests/lms/test_certificate_web_view.py

@@ -43,7 +43,8 @@ class CertificateWebViewTest(EventsTestMixin, UniqueCourseTest):
             settings=course_settings
         )
         self.course_fixture.add_advanced_settings({
-            "cert_html_view_enabled": {"value": "true"}
+            "cert_html_view_enabled": {"value": "true"},
+            "certificates_display_behavior": {"value": "early_with_info"},
         })
         self.course_fixture.install()
         self.user_id = "99"  # we have created a user with this id in fixture

lms/djangoapps/certificates/tests/test_webview_views.py

@@ -657,6 +657,35 @@ class CertificatesViewsTests(CommonCertificatesTestCase):
         self.assertIn("We cannot find a certificate with this URL or ID number.", response.content)
 
     @override_settings(FEATURES=FEATURES_WITH_CERTS_ENABLED)
+    def test_html_view_for_non_viewable_certificate(self):
+        """
+        Tests that Certificate HTML Web View returns "Cannot Find Certificate" if certificate is not viewable yet.
+        """
+        test_certificates = [
+            {
+                'id': 0,
+                'name': 'Certificate Name 0',
+                'signatories': [],
+                'version': 1,
+                'is_active': True
+            }
+        ]
+        self.course.certificates = {'certificates': test_certificates}
+        self.course.cert_html_view_enabled = True
+        self.course.certificate_available_date = datetime.datetime.today() + datetime.timedelta(days=1)
+        self.course.save()
+        self.store.update_item(self.course, self.user.id)
+
+        test_url = get_certificate_url(
+            user_id=self.user.id,
+            course_id=unicode(self.course.id)
+        )
+        response = self.client.get(test_url)
+        self.assertIn("Invalid Certificate", response.content)
+        self.assertIn("Cannot Find Certificate", response.content)
+        self.assertIn("We cannot find a certificate with this URL or ID number.", response.content)
+
+    @override_settings(FEATURES=FEATURES_WITH_CERTS_ENABLED)
     def test_render_html_view_with_valid_signatories(self):
         self._add_course_certificates(count=1, signatory_count=2)
         test_url = get_certificate_url(
@@ -871,8 +900,7 @@ class CertificatesViewsTests(CommonCertificatesTestCase):
     @override_settings(FEATURES=FEATURES_WITH_CERTS_ENABLED)
     @ddt.data(
         (-2, True),
-        (-2, False),
-        (10, False)
+        (-2, False)
     )
     @ddt.unpack
     def test_html_view_certificate_available_date_for_instructor_paced_courses(self, cert_avail_delta, self_paced):

lms/djangoapps/certificates/views/webview.py

@@ -43,7 +43,7 @@ from openedx.core.djangoapps.catalog.utils import get_course_run_details
 from openedx.core.djangoapps.lang_pref.api import released_languages
 from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
 from openedx.core.lib.courses import course_image_url
-from openedx.core.djangoapps.certificates.api import display_date_for_certificate
+from openedx.core.djangoapps.certificates.api import display_date_for_certificate, certificates_viewable_for_course
 from student.models import LinkedInAddToProfileConfiguration
 from util import organizations_helpers as organization_api
 from util.date_utils import strftime_localized
@@ -516,6 +516,13 @@ def render_html_view(request, user_id, course_id):
         log.info(error_str, course_id, user_id, str(exception))
         return _render_invalid_certificate(course_id, platform_name, configuration)
 
+    if not certificates_viewable_for_course(course):
+        log.info(
+            "Invalid cert: Certificate for %s is not viewable yet.",
+            course_id,
+        )
+        return _render_invalid_certificate(course_id, platform_name, configuration)
+
     # Kick the user back to the "Invalid" screen if the feature is disabled for the course
     if not course.cert_html_view_enabled:
         log.info(