[new feature] add image component

packages/image/test/index.spec.js

@@ -0,0 +1,45 @@
+
+import { mount } from '../../../test/utils';
+import Image from '..';
+
+test('click event', () => {
+  const wrapper = mount(Image);
+
+  wrapper.trigger('click');
+  expect(wrapper.emitted('click')[0][0]).toBeTruthy();
+});
+
+test('load event', () => {
+  const wrapper = mount(Image, {
+    propsData: {
+      src: 'https://img.yzcdn.cn/vant/cat.jpeg'
+    }
+  });
+
+  wrapper.find('img').trigger('load');
+
+  expect(wrapper.emitted('load')[0][0]).toBeTruthy();
+});
+
+test('error event', () => {
+  const wrapper = mount(Image, {
+    propsData: {
+      src: 'https://img.yzcdn.cn/vant/cat.jpeg'
+    }
+  });
+
+  wrapper.find('img').trigger('error');
+
+  expect(wrapper.emitted('error')[0][0]).toBeTruthy();
+});
+
+test('lazy load', () => {
+  const wrapper = mount(Image, {
+    propsData: {
+      src: 'https://img.yzcdn.cn/vant/cat.jpeg',
+      lazyLoad: true
+    }
+  });
+
+  expect(wrapper).toMatchSnapshot();
+});