Add scores MIME type

refs PLAT-4154

Test Plan:
Verify you can post results to the AGS using the
application/vnd.ims.lis.v1.score+json content-type

Change-Id: I2de0da013a93669b597aaac02070d2dac7ff207b
Reviewed-on: https://gerrit.instructure.com/178409
Tested-by: Jenkins
Reviewed-by: Marc Phillips <mphillips@instructure.com>
QA-Review: Marc Phillips <mphillips@instructure.com>
Product-Review: Weston Dransfield <wdransfield@instructure.com>

config/initializers/mime_types.rb

@@ -29,6 +29,7 @@ Mime::Type.register "application/rtf", :rtf
 Mime::Type.register "text/plaintext", :log
 Mime::Type.register 'application/vnd.api+json', :jsonapi
 Mime::Type.register 'application/vnd.ims.lis.v2.lineitem+json', :lineitem
+Mime::Type.register 'application/vnd.ims.lis.v1.score+json', :score
 Mime::Type.register 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', :docx
 Mime::Type.register 'application/vnd.openxmlformats-officedocument.presentationml.presentation', :pptx
 Mime::Type.register 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', :xlsx
@@ -40,6 +41,7 @@ MIME::Types['application/epub+zip'].each do |mime_type|
 end
 
 # Custom LTI Advantage MIME types
-ActionDispatch::Request.parameter_parsers[:lineitem] = lambda do |body|
-  JSON.parse(body)
-end
+standard_json_parser = lambda { |body| JSON.parse(body) }
+ActionDispatch::Request.parameter_parsers[:lineitem] = standard_json_parser
+ActionDispatch::Request.parameter_parsers[:score] = standard_json_parser
+

spec/controllers/lti/ims/scores_controller_spec.rb

@@ -63,6 +63,8 @@ module Lti::Ims
     let(:scope_to_remove) { 'https://purl.imsglobal.org/spec/lti-ags/scope/score' }
 
     describe '#create' do
+      let(:content_type) { 'application/vnd.ims.lis.v1.score+json' }
+
       it_behaves_like 'advantage services'
 
       context 'with valid params' do