[improvement] rename packages dir to src (#3659)

src/tree-select/test/index.spec.js

@@ -0,0 +1,37 @@
+import TreeSelect from '..';
+import { mount } from '../../../test/utils';
+
+test('empty list', () => {
+  expect(mount(TreeSelect)).toMatchSnapshot();
+});
+
+test('select item', () => {
+  const onItemClick = jest.fn();
+  const item = {
+    text: 'city1',
+    id: 1
+  };
+
+  const wrapper = mount(TreeSelect, {
+    propsData: {
+      items: [{
+        text: 'group1',
+        children: [
+          item,
+          { ...item, disabled: true }
+        ]
+      }]
+    },
+    context: {
+      on: {
+        itemclick: onItemClick
+      }
+    }
+  });
+
+  const items = wrapper.findAll('.van-tree-select__item');
+  items.at(0).trigger('click');
+  expect(onItemClick).toHaveBeenCalledWith(item);
+  items.at(1).trigger('click');
+  expect(onItemClick).toHaveBeenCalledTimes(1);
+});