Create a todo on failing MR build

When a build fails for a commit, create a todo for the author of the
merge request that commit is the HEAD of. If the commit isn't the HEAD
commit of any MR, don't do anything. If there already is a todo for that
user and MR, don't do anything.

Current limitations:
- This isn't configurable by project.
- The author of a merge request might not be the person who pushed the
  breaking commit.

1 files changed, 19 insertions, 0 deletions

diff --git a/spec/services/todo_service_spec.rb b/spec/services/todo_service_spec.rb
index a075496ee63..42147736532 100644
--- a/spec/services/todo_service_spec.rb
+++ b/spec/services/todo_service_spec.rb
@@ -305,6 +305,25 @@ describe TodoService, services: true do
         expect(second_todo.reload).to be_done
       end
     end
+
+    describe '#merge_request_build_failed' do
+      it 'creates a pending todo for the merge request author' do
+        service.merge_request_build_failed(mr_unassigned)
+
+        should_create_todo(user: author, target: mr_unassigned, action: Todo::BUILD_FAILED)
+      end
+    end
+
+    describe '#merge_request_push' do
+      it 'marks related pending todos to the target for the user as done' do
+        first_todo = create(:todo, :build_failed, user: author, project: project, target: mr_assigned, author: john_doe)
+        second_todo = create(:todo, :build_failed, user: john_doe, project: project, target: mr_assigned, author: john_doe)
+        service.merge_request_push(mr_assigned, author)
+
+        expect(first_todo.reload).to be_done
+        expect(second_todo.reload).not_to be_done
+      end
+    end
   end
 
   def should_create_todo(attributes = {})