[Improvement] Rebuild test system (#1051)

packages/submit-bar/test/index.spec.js

@@ -0,0 +1,26 @@
+import SubmitBar from '../';
+import demoTest from '../../../test/demo-test';
+import { mount } from '@vue/test-utils';
+
+demoTest(SubmitBar);
+
+test('submit', () => {
+  const wrapper = mount(SubmitBar, {
+    propsData: {
+      price: 0.01,
+      disabled: true
+    }
+  });
+
+  expect(wrapper.html()).toMatchSnapshot();
+
+  // disabled
+  const button = wrapper.find('.van-button');
+  button.trigger('click');
+  expect(wrapper.emitted('submit')).toBeFalsy();
+
+  // submit
+  wrapper.vm.disabled = false;
+  button.trigger('click');
+  expect(wrapper.emitted('submit')).toBeTruthy();
+});