Updating course overview serializer to return string data for has_ended and has_started, and not a bound method

Oops meant this to be a bool and not a string type

Had to add a start and end date for the course overview test fixture for tests to pass

openedx/core/djangoapps/content/course_overviews/serializers.py

@@ -19,7 +19,7 @@ class CourseOverviewBaseSerializer(serializers.ModelSerializer):
     def to_representation(self, instance):
         representation = super(CourseOverviewBaseSerializer, self).to_representation(instance)
         representation['display_name_with_default'] = instance.display_name_with_default
-        representation['has_started'] = instance.has_started
-        representation['has_ended'] = instance.has_ended
+        representation['has_started'] = instance.has_started()
+        representation['has_ended'] = instance.has_ended()
         representation['pacing'] = instance.pacing
         return representation

openedx/core/djangoapps/content/course_overviews/tests/factories.py

@@ -1,5 +1,6 @@
 from __future__ import absolute_import
 
+from datetime import datetime, timedelta
 import json
 
 import factory
@@ -35,3 +36,11 @@ class CourseOverviewFactory(DjangoModelFactory):
     @factory.lazy_attribute
     def display_name(self):
         return "{} Course".format(self.id)
+
+    @factory.lazy_attribute
+    def start(self):
+        return datetime.now()
+
+    @factory.lazy_attribute
+    def end(self):
+        return datetime.now() + timedelta(30)

openedx/core/djangoapps/content/course_overviews/tests/test_serializers.py

@@ -35,3 +35,6 @@ class TestCourseOverviewSerializer(TestCase):
         ]
         for field in fields:
             assert field in data
+
+        assert isinstance(data['has_started'], bool)
+        assert isinstance(data['has_ended'], bool)