Update selector to test SVG icon name

spec/javascripts/groups/components/item_caret_spec.js

@@ -16,24 +16,20 @@ describe('ItemCaretComponent', () => {
   describe('template', () => {
     it('should render component template correctly', () => {
       const vm = createComponent();
-      vm.$mount();
       expect(vm.$el.classList.contains('folder-caret')).toBeTruthy();
+      expect(vm.$el.querySelectorAll('svg').length).toBe(1);
       vm.$destroy();
     });
 
     it('should render caret down icon if `isGroupOpen` prop is `true`', () => {
       const vm = createComponent(true);
-      vm.$mount();
-      expect(vm.$el.querySelectorAll('i.fa.fa-caret-down').length).toBe(1);
-      expect(vm.$el.querySelectorAll('i.fa.fa-caret-right').length).toBe(0);
+      expect(vm.$el.querySelector('svg use').getAttribute('xlink:href')).toContain('angle-down');
       vm.$destroy();
     });
 
     it('should render caret right icon if `isGroupOpen` prop is `false`', () => {
       const vm = createComponent();
-      vm.$mount();
-      expect(vm.$el.querySelectorAll('i.fa.fa-caret-down').length).toBe(0);
-      expect(vm.$el.querySelectorAll('i.fa.fa-caret-right').length).toBe(1);
+      expect(vm.$el.querySelector('svg use').getAttribute('xlink:href')).toContain('angle-right');
       vm.$destroy();
     });
   });