Convert emojis controller spec to request spec (#31597)

Co-authored-by: Claire <claire.github-309c@sitedethib.com>

spec/requests/emojis_spec.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe 'Emojis' do
+  describe 'GET /emojis/:id' do
+    let(:emoji) { Fabricate(:custom_emoji, shortcode: 'coolcat') }
+
+    it 'returns http success with correct json' do
+      get "/emojis/#{emoji.id}"
+
+      expect(response)
+        .to have_http_status(200)
+      expect(body_as_json)
+        .to include(
+          name: ':coolcat:',
+          type: 'Emoji'
+        )
+    end
+  end
+end