Added missing tests

course_discovery/apps/api/serializers.py

@@ -238,7 +238,7 @@ class OrganizationSerializer(TaggitSerializer, MinimalOrganizationSerializer):
     class Meta(MinimalOrganizationSerializer.Meta):
         model = Organization
         fields = MinimalOrganizationSerializer.Meta.fields + (
-            'description', 'homepage_url', 'tags', 'logo_image_url', 'marketing_url'
+            'description', 'homepage_url', 'tags', 'logo_image_url', 'marketing_url',
         )
 
 

course_discovery/apps/api/tests/test_fields.py

 from django.test import TestCase
 
-from course_discovery.apps.api.fields import ImageField
+from course_discovery.apps.api.fields import ImageField, StdImageSerializerField
+from course_discovery.apps.api.tests.test_serializers import make_request
+from course_discovery.apps.core.tests.helpers import make_image_file
+from course_discovery.apps.course_metadata.tests.factories import ProgramFactory
 
 
 class ImageFieldTests(TestCase):
@@ -13,3 +16,27 @@ class ImageFieldTests(TestCase):
             'width': None
         }
         self.assertEqual(ImageField().to_representation(value), expected)
+
+
+# pylint: disable=no-member
+class StdImageSerializerFieldTests(TestCase):
+    def test_to_representation(self):
+        request = make_request()
+        # TODO Create test-only model to avoid unnecessary dependency on Program model.
+        program = ProgramFactory(banner_image=make_image_file('test.jpg'))
+        field = StdImageSerializerField()
+        field._context = {'request': request}  # pylint: disable=protected-access
+
+        expected = {
+            size_key: {
+                'url': '{}{}'.format(
+                    'http://testserver',
+                    getattr(program.banner_image, size_key).url
+                ),
+                'width': program.banner_image.field.variations[size_key]['width'],
+                'height': program.banner_image.field.variations[size_key]['height']
+            }
+            for size_key in program.banner_image.field.variations
+        }
+
+        self.assertDictEqual(field.to_representation(program.banner_image), expected)