adapt specs to altered non writable message

spec/models/mail_handler_spec.rb

@@ -276,18 +276,19 @@ describe MailHandler, type: :model do
         end
 
         it 'rejects if unknown_user=accept and permission check is present' do
-
           expected =
             'MailHandler: work_package could not be created by Anonymous due to ' \
-          '#["may not be accessed.", "Type is not writable.", "Project is not writable.", ' \
-          '"Subject is not writable.", "Description is not writable."]'
+          '#["may not be accessed.", "Type was attempted to be written but is not writable.", ' \
+          '"Project was attempted to be written but is not writable.", ' \
+          '"Subject was attempted to be written but is not writable.", ' \
+          '"Description was attempted to be written but is not writable."]'
 
           expect(Rails.logger)
-            .to(receive(:error))
+            .to receive(:error)
             .with(expected)
 
           result = submit_email 'ticket_by_unknown_user.eml',
-                                issue: {project: project.identifier},
+                                issue: { project: project.identifier },
                                 unknown_user: 'accept'
 
           expect(result).to eq false
@@ -295,7 +296,7 @@ describe MailHandler, type: :model do
 
         it 'accepts if unknown_user=accept and no_permission_check' do
           work_package = submit_email 'ticket_by_unknown_user.eml',
-                                      issue: {project: project.identifier},
+                                      issue: { project: project.identifier },
                                       unknown_user: 'accept',
                                       no_permission_check: 1
 

spec/requests/api/v3/relations/relations_api_spec.rb

@@ -302,7 +302,7 @@ describe  'API v3 Relation resource', type: :request, content_type: :json do
       it "should let the user know the attribute is read-only" do
         msg = JSON.parse(last_response.body)["message"]
 
-        expect(msg).to include 'read-only'
+        expect(msg).to include "Work package an existing relation's `from` link is immutable"
       end
     end
   end

spec/requests/api/v3/support/response_examples.rb

@@ -150,7 +150,7 @@ shared_examples_for 'format error' do |message|
                   message
 end
 
-shared_examples_for 'read-only violation' do |attribute, model|
+shared_examples_for 'read-only violation' do |attribute, model, attribute_message = nil|
   describe 'details' do
     subject { JSON.parse(last_response.body)['_embedded']['details'] }
 
@@ -160,7 +160,7 @@ shared_examples_for 'read-only violation' do |attribute, model|
   it_behaves_like 'error response',
                   422,
                   'PropertyIsReadOnly',
-                  "#{model.human_attribute_name(attribute)} #{I18n.t('activerecord.errors.messages.error_readonly')}"
+                  "#{attribute_message || model.human_attribute_name(attribute)} #{I18n.t('activerecord.errors.messages.error_readonly')}"
 end
 
 shared_examples_for 'multiple errors' do |code, _message|

spec/requests/api/v3/work_package_resource_spec.rb

@@ -856,13 +856,13 @@ describe 'API v3 Work package resource',
             context 'created_at' do
               let(:params) { valid_params.merge(createdAt: tomorrow) }
 
-              it_behaves_like 'read-only violation', 'createdAt', WorkPackage
+              it_behaves_like 'read-only violation', 'createdAt', WorkPackage, 'Created on'
             end
 
             context 'updated_at' do
               let(:params) { valid_params.merge(updatedAt: tomorrow) }
 
-              it_behaves_like 'read-only violation', 'updatedAt', WorkPackage
+              it_behaves_like 'read-only violation', 'updatedAt', WorkPackage, 'Updated on'
             end
           end
         end