Merge branch 'manual-todos-issuable-sidebar' into 'master'

Manually create todo for issuable

## What does this MR do?

Adds a button to the sidebar in issues & merge requests to allow users to manually create a todo item themselves.

## What are the relevant issue numbers?

Closes #15045 

## Screenshots (if relevant)

![Screen_Shot_2016-06-07_at_09.52.14](/uploads/00af70244c0589d19f241c3e85f3d63d/Screen_Shot_2016-06-07_at_09.52.14.png)

![Screen_Shot_2016-06-07_at_09.52.06](/uploads/e232b02208613a4a50cff4d1e6f119ff/Screen_Shot_2016-06-07_at_09.52.06.png)

![Screen_Shot_2016-06-07_at_09.51.14](/uploads/f1d36435d49ab882538ae2252bec8086/Screen_Shot_2016-06-07_at_09.51.14.png)

See merge request !4502

1 files changed, 16 insertions, 0 deletions

diff --git a/spec/services/todo_service_spec.rb b/spec/services/todo_service_spec.rb
index 549a936b060..26f09cdbaf9 100644
--- a/spec/services/todo_service_spec.rb
+++ b/spec/services/todo_service_spec.rb
@@ -228,6 +228,14 @@ describe TodoService, services: true do
         should_not_create_any_todo { service.new_note(note_on_project_snippet, john_doe) }
       end
     end
+
+    describe '#mark_todo' do
+      it 'creates a todo from a issue' do
+        service.mark_todo(unassigned_issue, author)
+
+        should_create_todo(user: author, target: unassigned_issue, action: Todo::MARKED)
+      end
+    end
   end
 
   describe 'Merge Requests' do
@@ -361,6 +369,14 @@ describe TodoService, services: true do
         expect(second_todo.reload).not_to be_done
       end
     end
+
+    describe '#mark_todo' do
+      it 'creates a todo from a merge request' do
+        service.mark_todo(mr_unassigned, author)
+
+        should_create_todo(user: author, target: mr_unassigned, action: Todo::MARKED)
+      end
+    end
   end
 
   def should_create_todo(attributes = {})