feat: テスト自動化（#104） (#220)

#104

Co-authored-by: miteruzo <miteruzo@naver.com>
Reviewed-on: #220

backend/spec/requests/posts_spec.rb

@@ -0,0 +1,30 @@
+require 'rails_helper'
+
+
+RSpec.describe 'Posts API', type: :request do
+  describe 'GET /posts' do
+    it 'returns tags with name in JSON' do
+      tn = TagName.create!(name: 'gen:spec_tag')
+      tag = Tag.create!(tag_name: tn, category: 'general')
+
+      post = Post.create!(title: 'spec post', url: 'https://example.com/spec')
+      PostTag.create!(post: post, tag: tag)
+
+      get '/posts'
+
+      expect(response).to have_http_status(:ok)
+
+      json = JSON.parse(response.body)
+      expect(json).to have_key('posts')
+      expect(json['posts']).to be_a(Array)
+      expect(json['posts']).not_to be_empty
+
+      tags = json['posts'][0]['tags']
+      expect(tags).to be_a(Array)
+      expect(tags).not_to be_empty
+
+      expect(tags[0]).to have_key('name')
+      expect(tags[0]['name']).to eq('gen:spec_tag')
+    end
+  end
+end