add course uuid to api response

closes OUT-1317

Test plan:
1.  Create a course in Canvas
2.  Visit
      domain.canvas/api/v1/courses/<course_id>
3.  Verify that "uuid" field is present in JSON
    response

Change-Id: I4a504061a0af55ce635be13e71fa873abd88748c
Reviewed-on: https://gerrit.instructure.com/114839
Tested-by: Jenkins
Reviewed-by: Matt Berns <mberns@instructure.com>
QA-Review: Leo Abner <rabner@instructure.com>
Product-Review: Michael Brewer-Davis <mbd@instructure.com>

app/controllers/courses_controller.rb

@@ -88,6 +88,11 @@ require 'securerandom'
 #           "description": "the SIS identifier for the course, if defined. This field is only included if the user has permission to view SIS information.",
 #           "type": "string"
 #         },
+#         "uuid": {
+#           "description": "the UUID of the course",
+#           "example": "WvAHhY5FINzq5IyRIJybGeiXyFkG3SqHUPb7jZY5",
+#           "type": "string"
+#         },
 #         "integration_id": {
 #           "description": "the integration identifier for the course, if defined. This field is only included if the user has permission to view SIS information.",
 #           "type": "string"

lib/api/v1/course.rb

@@ -75,7 +75,8 @@ module Api::V1::Course
   #     "hide_final_grades" => false,
   #     "apply_assignment_group_weights" => false,
   #     "calendar" => { "ics" => "http://localhost:3000/feeds/calendars/course_Y6uXZZPu965ziva2pqI7c0QR9v1yu2QZk9X0do2D.ics" },
-  #     "permissions" => { :create_discussion_topic => true }
+  #     "permissions" => { :create_discussion_topic => true },
+  #     "uuid" => "WvAHhY5FINzq5IyRIJybGeiXyFkG3SqHUPb7jZY5"
   #   }
   #
   def course_json(course, user, session, includes, enrollments)

lib/api/v1/course_json.rb

@@ -19,7 +19,7 @@ module Api::V1
   class CourseJson
 
     BASE_ATTRIBUTES = %w(id name course_code account_id start_at default_view enrollment_term_id is_public
-                         grading_standard_id root_account_id).freeze
+                         grading_standard_id root_account_id uuid).freeze
 
     INCLUDE_CHECKERS = {grading: 'needs_grading_count', syllabus: 'syllabus_body',
                         url: 'html_url', description: 'public_description', permissions: 'permissions'}.freeze

spec/apis/v1/courses_api_spec.rb

@@ -552,7 +552,8 @@ describe CoursesController, type: :request do
         expect(new_course.time_zone.tzinfo.name).to eql 'America/Juneau'
         course_response.merge!(
           'id' => new_course.id,
-          'calendar' => { 'ics' => "http://www.example.com/feeds/calendars/course_#{new_course.uuid}.ics" }
+          'calendar' => { 'ics' => "http://www.example.com/feeds/calendars/course_#{new_course.uuid}.ics" },
+          'uuid' => new_course.uuid
         )
         course_response.delete 'term_id' #not included in the response
         expect(json).to eql course_response
@@ -603,7 +604,8 @@ describe CoursesController, type: :request do
         expect(new_course.enrollment_term_id).to eql term.id
         course_response.merge!(
           'id' => new_course.id,
-          'calendar' => { 'ics' => "http://www.example.com/feeds/calendars/course_#{new_course.uuid}.ics" }
+          'calendar' => { 'ics' => "http://www.example.com/feeds/calendars/course_#{new_course.uuid}.ics" },
+          'uuid' => new_course.uuid
         )
         expect(json).to eql course_response
       end
@@ -2825,7 +2827,8 @@ describe CoursesController, type: :request do
         'apply_assignment_group_weights' => false,
         'enrollment_term_id' => @course.enrollment_term_id,
         'restrict_enrollments_to_course_dates' => false,
-        'time_zone' => 'America/Los_Angeles'
+        'time_zone' => 'America/Los_Angeles',
+        'uuid' => @course1.uuid
       })
     end
 

spec/apis/v1/stream_items_api_spec.rb

@@ -441,7 +441,8 @@ describe UsersController, type: :request do
         'storage_quota_mb' => @course.storage_quota_mb,
         'apply_assignment_group_weights' => false,
         'restrict_enrollments_to_course_dates' => false,
-        'time_zone' => 'America/Denver'
+        'time_zone' => 'America/Denver',
+        'uuid' => @course.uuid
       },
 
       'user' => {
@@ -558,7 +559,8 @@ describe UsersController, type: :request do
         'storage_quota_mb' => @course.storage_quota_mb,
         'apply_assignment_group_weights' => false,
         'restrict_enrollments_to_course_dates' => false,
-        'time_zone' => 'America/Denver'
+        'time_zone' => 'America/Denver',
+        'uuid' => @course.uuid
       },
 
       'user' => {