Fixing atom feeds for accounts, adding tests that would catch such bugs in future

spec/controllers/accounts_controller_spec.rb

@@ -1,17 +1,37 @@
 require 'rails_helper'
 
 RSpec.describe AccountsController, type: :controller do
+  render_views
+
   let(:alice)  { Fabricate(:account, username: 'alice') }
 
   describe 'GET #show' do
-    it 'returns http success' do
-      get :show, params: { username: alice.username }
-      expect(response).to have_http_status(:success)
+    before do
+      status1 = Status.create!(account: alice, text: 'Hello world')
+      status2 = Status.create!(account: alice, text: 'Boop', thread: status1)
+      status3 = Status.create!(account: alice, text: 'Picture!')
+      status3.media_attachments.create!(account: alice, file: fixture_file_upload('files/attachment.jpg', 'image/jpeg'))
+      status4 = Status.create!(account: alice, text: 'Mentioning @alice')
     end
 
-    it 'returns http success with Atom' do
-      get :show, params: { username: alice.username }, format: 'atom'
-      expect(response).to have_http_status(:success)
+    context 'atom' do
+      before do
+        get :show, params: { username: alice.username }, format: 'atom'
+      end
+
+      it 'returns http success with Atom' do
+        expect(response).to have_http_status(:success)
+      end
+    end
+
+    context 'html' do
+      before do
+        get :show, params: { username: alice.username }
+      end
+
+      it 'returns http success' do
+        expect(response).to have_http_status(:success)
+      end
     end
   end