Add missing request test for states_controller

Author: chaimann

admin/spec/requests/solidus_admin/states_spec.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe "SolidusAdmin::StatesController", type: :request do
+  let(:admin_user) { create(:admin_user) }
+
+  before do
+    allow_any_instance_of(SolidusAdmin::BaseController).to receive(:spree_current_user).and_return(admin_user)
+  end
+
+  describe "GET /index" do
+    before { create_list(:state, 3) }
+
+    it "serves json with a 200 OK status" do
+      get solidus_admin.states_path
+      expect(response.headers["Content-Type"]).to include("application/json")
+      expect(response).to have_http_status(:ok)
+      expect(JSON.parse(response.body).size).to eq(3)
+    end
+  end
+end