Force non diff resolved discussion to display when collapse toggled

app/views/discussions/_discussion.html.haml

@@ -44,4 +44,4 @@
             = render "discussions/diff_with_notes", discussion: discussion
           - else
             .panel.panel-default
-              = render "discussions/notes", discussion: discussion
+              = render partial: "discussions/notes", locals: { discussion: discussion, disable_collapse_class: true }

changelogs/unreleased/fix-non-diff-resolved-discussion.yml

+---
+title: Force non diff resolved discussion to display when collapse toggled
+merge_request:
+author:
+type: fixed

spec/support/features/discussion_comments_shared_example.rb

@@ -121,14 +121,31 @@ shared_examples 'discussion comments' do |resource_name|
         end
       end
-      it 'clicking "Start discussion" will post a discussion' do
-        find(submit_selector).click
-        find(comments_selector, match: :first)
-        new_comment = all(comments_selector).last
-        expect(new_comment).to have_content 'a'
-        expect(new_comment).to have_selector '.discussion'
+      describe 'creating a discussion' do
+        before do
+          find(submit_selector).click
+          find(comments_selector, match: :first)
+        end
+
+        it 'clicking "Start discussion" will post a discussion' do
+          new_comment = all(comments_selector).last
+
+          expect(new_comment).to have_content 'a'
+          expect(new_comment).to have_selector '.discussion'
+        end
+
+        if resource_name == 'merge request'
+          it 'shows resolved discussion when toggled' do
+            click_button "Resolve discussion"
+
+            expect(page).to have_selector('.note-row-1', visible: true)
+            refresh
+            click_button "Toggle discussion"
+            expect(page).to have_selector('.note-row-1', visible: true)
+          end
+        end
       end
       if resource_name == 'issue'