Refactored tests and added a breakpoint to the merge_request_tabs

app/assets/javascripts/merge_request_tabs.js

@@ -144,6 +144,9 @@ import BlobForkSuggestion from './blob/blob_fork_suggestion';
         this.resetViewContainer();
         this.mountPipelinesView();
       } else {
+        if (Breakpoints.get().getBreakpointSize() !== 'xs') {
+          this.expandView();
+        }
         this.resetViewContainer();
         this.destroyPipelinesView();
       }

spec/features/issuables/user_sees_sidebar_spec.rb

+require 'rails_helper'
+
+describe 'Issue Sidebar on Mobile' do
+  include MobileHelpers
+
+  let(:project) { create(:project, :public) }
+  let(:merge_request) { create(:merge_request, source_project: project) }
+  let(:issue) { create(:issue, project: project) }
+  let!(:user) { create(:user)}
+
+  before do
+    sign_in(user)
+  end
+
+  context 'mobile sidebar on merge requests', js: true do
+    before do
+      visit namespace_project_merge_request_path(merge_request.project.namespace, merge_request.project, merge_request)
+    end
+
+    it_behaves_like "issue sidebar stays collapsed on mobile"
+  end
+
+  context 'mobile sidebar on issues', js: true do
+    before do
+      visit namespace_project_issue_path(project.namespace, project, issue)
+    end
+
+    it_behaves_like "issue sidebar stays collapsed on mobile"
+  end
+end

spec/features/issues/issue_sidebar_spec.rb

@@ -6,7 +6,6 @@ feature 'Issue Sidebar', feature: true do
   let(:group) { create(:group, :nested) }
   let(:project) { create(:project, :public, namespace: group) }
   let(:issue) { create(:issue, project: project) }
-  let(:merge_request) { create(:merge_request, source_project: project) }
   let!(:user) { create(:user)}
   let!(:label) { create(:label, project: project, title: 'bug') }
 
@@ -155,22 +154,6 @@ feature 'Issue Sidebar', feature: true do
     end
   end
 
-  context 'as a allowed mobile user', js: true do
-    before do
-      project.team << [user, :developer]
-      resize_screen_xs
-    end
-
-    context 'mobile sidebar' do
-      it 'collapses the sidebar for small screens on an issue/merge_request' do
-        visit_issue(project, issue)
-        expect(page).not_to have_css('aside.right-sidebar.right-sidebar-collapsed')
-        visit namespace_project_merge_request_path(merge_request.project.namespace, merge_request.project, merge_request)
-        expect(page).not_to have_css('aside.right-sidebar.right-sidebar-collapsed')
-      end
-    end
-  end
-
   context 'as a guest' do
     before do
       project.team << [user, :guest]

spec/support/shared_examples/features/issuable_sidebar_shared_examples.rb

+shared_examples 'issue sidebar stays collapsed on mobile' do
+  before do
+    resize_screen_xs
+  end
+
+  it 'keeps the sidebar collapsed' do
+    expect(page).not_to have_css('.right-sidebar.right-sidebar-collapsed')
+  end
+end