Add test for GET /shops/backgrounds (#8771)

test/api/v3/integration/shops/GET-shops_backgrounds.test.js

@@ -0,0 +1,25 @@
+import {
+  generateUser,
+  translate as t,
+} from '../../../../helpers/api-integration/v3';
+
+describe('GET /shops/backgrounds', () => {
+  let user;
+
+  beforeEach(async () => {
+    user = await generateUser();
+  });
+
+  it('returns a valid shop object', async () => {
+    let shop = await user.get('/shops/backgrounds');
+    expect(shop.identifier).to.equal('backgroundShop');
+    expect(shop.text).to.eql(t('backgroundShop'));
+    expect(shop.notes).to.eql(t('backgroundShopText'));
+    expect(shop.imageName).to.equal('background_shop');
+    expect(shop.sets).to.be.an('array');
+
+    let sets = shop.sets.map(set => set.identifier);
+    expect(sets).to.include('incentiveBackgrounds');
+    expect(sets).to.include('backgrounds062014');
+  });
+});