Add actor to work_items FF on create mutation

Adds project as an actor for the work_items FF
in the WorkItemCreate GraphQL mutation

app/graphql/mutations/work_items/create.rb

@@ -8,6 +8,9 @@ module Mutations
       include Mutations::SpamProtection
       include FindsProject
 
+      description "Creates a work item." \
+                  " Available only when feature flag `work_items` is enabled. The feature is experimental and is subject to change without notice."
+
       authorize :create_work_item
 
       argument :description, GraphQL::Types::String,
@@ -29,6 +32,11 @@ module Mutations
 
       def resolve(project_path:, **attributes)
         project = authorized_find!(project_path)
+
+        unless Feature.enabled?(:work_items, project)
+          return { errors: ['`work_items` feature flag disabled for this project'] }
+        end
+
         params = global_id_compatibility_params(attributes).merge(author_id: current_user.id)
 
         spam_params = ::Spam::SpamParams.new_from_request(request: context[:request])

app/graphql/types/mutation_type.rb

@@ -125,7 +125,7 @@ module Types
     mount_mutation Mutations::Packages::Destroy
     mount_mutation Mutations::Packages::DestroyFile
     mount_mutation Mutations::Echo
-    mount_mutation Mutations::WorkItems::Create, feature_flag: :work_items
+    mount_mutation Mutations::WorkItems::Create
     mount_mutation Mutations::WorkItems::Delete
     mount_mutation Mutations::WorkItems::Update
   end

doc/api/graphql/reference/index.md

@@ -5168,7 +5168,7 @@ Input type: `VulnerabilityRevertToDetectedInput`
 
 ### `Mutation.workItemCreate`
 
-Available only when feature flag `work_items` is enabled. This flag is disabled by default, because the feature is experimental and is subject to change without notice.
+Creates a work item. Available only when feature flag `work_items` is enabled. The feature is experimental and is subject to change without notice.
 
 Input type: `WorkItemCreateInput`
 

spec/requests/api/graphql/mutations/work_items/create_spec.rb

@@ -68,8 +68,13 @@ RSpec.describe 'Create a work item' do
         stub_feature_flags(work_items: false)
       end
 
-      it_behaves_like 'a mutation that returns top-level errors',
-        errors: ["Field 'workItemCreate' doesn't exist on type 'Mutation'", "Variable $workItemCreateInput is declared by anonymous mutation but not used"]
+      it 'does not create the work item and returns an error' do
+        expect do
+          post_graphql_mutation(mutation, current_user: current_user)
+        end.to not_change(WorkItem, :count)
+
+        expect(mutation_response['errors']).to contain_exactly('`work_items` feature flag disabled for this project')
+      end
     end
   end
 end

spec/requests/api/graphql/mutations/work_items/update_spec.rb

@@ -71,10 +71,11 @@ RSpec.describe 'Update a work item' do
         stub_feature_flags(work_items: false)
       end
 
-      it 'does nothing and returns and error' do
+      it 'does not update the work item and returns and error' do
         expect do
           post_graphql_mutation(mutation, current_user: current_user)
-        end.to not_change(WorkItem, :count)
+          work_item.reload
+        end.to not_change(work_item, :title)
 
         expect(mutation_response['errors']).to contain_exactly('`work_items` feature flag disabled for this project')
       end