Check issue milestone availability

Add project when creating milestone in specs

We validate milestone is from the same
project/parent group as issuable ->
we need to set project in specs correctly

Improve methods names and specs organization

2 files changed, 12 insertions, 3 deletions

diff --git a/spec/services/merge_requests/build_service_spec.rb b/spec/services/merge_requests/build_service_spec.rb
index 536d0d345a4..057e8137a4e 100644
--- a/spec/services/merge_requests/build_service_spec.rb
+++ b/spec/services/merge_requests/build_service_spec.rb
@@ -229,6 +229,15 @@ describe MergeRequests::BuildService do
             end
           end
         end
+
+        context 'when a milestone is from another project' do
+          let(:milestone) { create(:milestone, project: create(:project)) }
+          let(:milestone_id) { milestone.id }
+
+          it 'sets milestone to nil' do
+            expect(merge_request.milestone).to be_nil
+          end
+        end
       end
     end
 
diff --git a/spec/services/merge_requests/update_service_spec.rb b/spec/services/merge_requests/update_service_spec.rb
index 20580bf14b9..8e367db031c 100644
--- a/spec/services/merge_requests/update_service_spec.rb
+++ b/spec/services/merge_requests/update_service_spec.rb
@@ -328,7 +328,7 @@ describe MergeRequests::UpdateService, :mailer do
         it_behaves_like 'system notes for milestones'
 
         it 'sends notifications for subscribers of changed milestone' do
-          merge_request.milestone = create(:milestone)
+          merge_request.milestone = create(:milestone, project: project)
 
           merge_request.save
 
@@ -352,7 +352,7 @@ describe MergeRequests::UpdateService, :mailer do
         end
 
         it 'marks pending todos as done' do
-          update_merge_request({ milestone: create(:milestone) })
+          update_merge_request({ milestone: create(:milestone, project: project) })
 
           expect(pending_todo.reload).to be_done
         end
@@ -361,7 +361,7 @@ describe MergeRequests::UpdateService, :mailer do
 
         it 'sends notifications for subscribers of changed milestone' do
           perform_enqueued_jobs do
-            update_merge_request(milestone: create(:milestone))
+            update_merge_request(milestone: create(:milestone, project: project))
           end
 
           should_email(subscriber)