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

src/tree-select/test/__snapshots__/demo.spec.js.snap

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+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`renders demo correctly 1`] = `
+<div>
+  <div>
+    <div class="van-tree-select" style="height: 300px;">
+      <div class="van-tree-select__nav">
+        <div class="van-ellipsis van-tree-select__nav-item van-tree-select__nav-item--active">所有城市</div>
+        <div class="van-ellipsis van-tree-select__nav-item">浙江</div>
+        <div class="van-ellipsis van-tree-select__nav-item">江苏</div>
+        <div class="van-ellipsis van-tree-select__nav-item van-tree-select__nav-item--disabled">福建</div>
+      </div>
+      <div class="van-tree-select__content">
+        <div class="van-ellipsis van-tree-select__item van-tree-select__item--active">杭州<i class="van-icon van-icon-checked van-tree-select__selected" style="font-size: 16px;">
+            <!----></i></div>
+        <div class="van-ellipsis van-tree-select__item">温州</div>
+        <div class="van-ellipsis van-tree-select__item van-tree-select__item--disabled">宁波</div>
+        <div class="van-ellipsis van-tree-select__item">义乌</div>
+        <div class="van-ellipsis van-tree-select__item">南京</div>
+        <div class="van-ellipsis van-tree-select__item">无锡</div>
+        <div class="van-ellipsis van-tree-select__item">徐州</div>
+        <div class="van-ellipsis van-tree-select__item">苏州</div>
+      </div>
+    </div>
+  </div>
+</div>
+`;

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

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+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`empty list 1`] = `
+<div class="van-tree-select" style="height: 300px;">
+  <div class="van-tree-select__nav"></div>
+  <div class="van-tree-select__content"></div>
+</div>
+`;

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

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+import Demo from '../demo';
+import demoTest from '../../../test/demo-test';
+
+demoTest(Demo);

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

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+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);
+});