Create DeferredContent.spec.js

src/components/deferredcontent/DeferredContent.spec.js

@@ -0,0 +1,15 @@
+import { mount } from '@vue/test-utils';
+import DeferredContent from './DeferredContent.vue';
+
+describe('DeferredContent', () => {
+    it('should exist', async () => {
+        const wrapper = mount(DeferredContent, {
+            slots: {
+                default: '<img src="demo/images/nature/nature4.jpg" alt="Nature"/>'
+            }
+        });
+
+        await wrapper.setData({ loaded: true });
+        expect(wrapper.find('img').exists()).toBe(true);
+    });
+});