AA-103: Dates widget enhancements

Reducing dates widget to one assignment. Adding link to dates
page in the dates widget

lms/djangoapps/courseware/tests/test_date_summary.py

@@ -642,6 +642,25 @@ class CourseDateSummaryTest(SharedModuleStoreTestCase):
             block = VerificationDeadlineDate(course, user)
             self.assertEqual(block.relative_datestring, expected_date_string)
 
+    @ddt.data(
+        'info',
+        'openedx.course_experience.course_home',
+    )
+    @override_waffle_flag(UNIFIED_COURSE_TAB_FLAG, active=True)
+    def test_dates_tab_link_render(self, url_name):
+        with freeze_time('2015-01-02'):
+            course = create_course_run()
+            user = create_user()
+            self.client.login(username=user.username, password=TEST_PASSWORD)
+            url = reverse(url_name, args=(course.id,))
+            response = self.client.get(url, follow=True)
+            html_elements = [
+                'class="dates-tab-link"',
+                'View all course dates</a>',
+            ]
+            for html in html_elements:
+                self.assertContains(response, html)
+
 
 @ddt.ddt
 class TestDateAlerts(SharedModuleStoreTestCase):

lms/static/sass/features/_course-experience.scss

@@ -490,6 +490,14 @@
   }
 }
 
+.dates-tab-link {
+  padding: 16px 0 0 24px;
+
+  a {
+    font-weight: bold;
+  }
+}
+
 // Course Updates Page
 .course-updates {
   .all-updates {

openedx/features/course_experience/templates/course_experience/course-dates-fragment.html

@@ -13,6 +13,9 @@ from django.utils.translation import ugettext as _
     % for course_date_block in course_date_blocks:
         <%include file="dates-summary.html" args="course_date=course_date_block" />
     % endfor
+    <div class="dates-tab-link">
+        <a href="${dates_tab_link}">View all course dates</a>
+    </div>
 % endif
 
 <%static:require_module_async module_name="js/dateutil_factory" class_name="DateUtilFactory">

openedx/features/course_experience/views/course_dates.py

@@ -5,6 +5,7 @@ Fragment for rendering the course dates sidebar.
 
 from django.http import Http404
 from django.template.loader import render_to_string
+from django.urls import reverse
 from django.utils.translation import get_language_bidi
 from opaque_keys.edx.keys import CourseKey
 from web_fragments.fragment import Fragment
@@ -25,10 +26,11 @@ class CourseDatesFragmentView(EdxFragmentView):
         """
         course_key = CourseKey.from_string(course_id)
         course = get_course_with_access(request.user, 'load', course_key, check_if_enrolled=False)
-        course_date_blocks = get_course_date_blocks(course, request.user, request, num_assignments=2)
+        course_date_blocks = get_course_date_blocks(course, request.user, request, num_assignments=1)
 
         context = {
-            'course_date_blocks': [block for block in course_date_blocks if block.title != 'current_datetime']
+            'course_date_blocks': [block for block in course_date_blocks if block.title != 'current_datetime'],
+            'dates_tab_link': reverse('dates', args=[course.id]),
         }
         html = render_to_string(self.template_name, context)
         dates_fragment = Fragment(html)