test: add empty test

Author: tangjinzhou

components/empty/__tests__/index.test.js

@@ -0,0 +1,25 @@
+import { mount } from '@vue/test-utils';
+import Empty from '..';
+import mountTest from '../../../tests/shared/mountTest';
+
+describe('Empty', () => {
+  mountTest(Empty);
+
+  it('image size should change', () => {
+    const wrapper = mount({
+      render() {
+        return <Empty imageStyle={{ height: '20px' }} />;
+      },
+    });
+    expect(wrapper.find('.ant-empty-image').element.style.height).toBe('20px');
+  });
+
+  it('description can be false', () => {
+    const wrapper = mount({
+      render() {
+        return <Empty description={false} />;
+      },
+    });
+    expect(wrapper.findAll('.ant-empty-description').length).toBe(0);
+  });
+});