DEV: Fix tests

assets/javascripts/discourse/components/payment-options.js.es6

@@ -3,7 +3,7 @@ import Component from "@ember/component";
 export default Component.extend({
   init() {
     this._super(...arguments);
-    if (this.plans.length === 1) {
+    if (this.plans && this.plans.length === 1) {
       this.set("selectedPlan", this.plans[0].id);
     }
   },

test/javascripts/acceptance/payments-test.js.es6

@@ -12,6 +12,6 @@ acceptance("Discourse Subscriptions", {
 QUnit.test("viewing product page", async assert => {
   await visit("/s");
 
-  assert.ok($("#product-list").length, "has product page");
+  assert.ok($(".product-list").length, "has product page");
   assert.ok($(".product:first-child a").length, "has a link");
 });