Add missing tests and update test description

spec/models/ci/pipeline_spec.rb

@@ -18,6 +18,7 @@ describe Ci::Pipeline, models: true do
   it { is_expected.to have_many(:trigger_requests) }
   it { is_expected.to have_many(:builds) }
   it { is_expected.to have_many(:auto_canceled_pipelines) }
+  it { is_expected.to have_many(:auto_canceled_jobs) }
 
   it { is_expected.to validate_presence_of :sha }
   it { is_expected.to validate_presence_of :status }

spec/models/commit_status_spec.rb

@@ -16,6 +16,7 @@ describe CommitStatus, :models do
   it { is_expected.to belong_to(:pipeline) }
   it { is_expected.to belong_to(:user) }
   it { is_expected.to belong_to(:project) }
+  it { is_expected.to belong_to(:auto_canceled_by) }
 
   it { is_expected.to validate_presence_of(:name) }
   it { is_expected.to validate_inclusion_of(:status).in_array(%w(pending running failed success canceled)) }

spec/presenters/ci/build_presenter_spec.rb

@@ -64,7 +64,7 @@ describe Ci::BuildPresenter do
         expect(build).to receive(:auto_canceled_by_id).and_return(1)
       end
 
-      it 'shows that the job is auto-canceled' do
+      it 'shows that the build is auto-canceled' do
         status_title = presenter.status_title
 
         expect(status_title).to include('auto-canceled')