diff --git a/spec/requests/tag_groups_controller_spec.rb b/spec/requests/tag_groups_controller_spec.rb
new file mode 100644
index 0000000000..f796644efa
--- /dev/null
+++ b/spec/requests/tag_groups_controller_spec.rb
@@ -0,0 +1,42 @@
+require 'rails_helper'
+
+RSpec.describe TagGroupsController do
+  let(:user) { Fabricate(:user) }
+  let(:tag_group) { Fabricate(:tag_group) }
+
+  describe '#index' do
+    describe 'for a non staff user' do
+      it 'should not be accessible' do
+        get "/tag_groups.json"
+
+        expect(response.status).to eq(404)
+
+        sign_in(user)
+        get "/tag_groups.json"
+
+        expect(response.status).to eq(404)
+      end
+    end
+
+    describe 'for a staff user' do
+      let(:admin) { Fabricate(:admin) }
+
+      before do
+        sign_in(admin)
+      end
+
+      it "should return the right response" do
+        tag_group
+
+        get "/tag_groups.json"
+
+        expect(response.status).to eq(200)
+
+        tag_groups = JSON.parse(response.body)["tag_groups"]
+
+        expect(tag_groups.count).to eq(1)
+        expect(tag_groups.first["id"]).to eq(tag_group.id)
+      end
+    end
+  end
+end