#20

backend/spec/requests/posts_spec.rb

@@ -155,6 +155,7 @@ RSpec.describe 'Posts API', type: :request do
 
   describe 'POST /posts' do
     let(:member) { create(:user, :member) }
+    let!(:alias_tag_name) { TagName.create!(name: 'manko', canonical: tag_name) }
 
     it '401 when not logged in' do
       sign_out
@@ -201,10 +202,9 @@ RSpec.describe 'Posts API', type: :request do
       expect(json).to include('id', 'title', 'url')
 
       # tags が name を含むこと（API 側の serialization が正しいこと）
-      expect(json).to have_key('tags')
-      expect(json['tags']).to be_an(Array)
-      expect(json['tags'][0]).to have_key('name')
-      expect(json['tags'][0]['name']).to eq('spec_tag')
+      names = json.fetch('tags').map { |t| t['name'] }
+      expect(names).to include('spec_tag')
+      expect(names).not_to include('manko')
     end
 
     context "when nico tag already exists in tags" do