test: Add test case for components/index.tsx (#4450)

tests/__snapshots__/index.test.js.snap

@@ -52,3 +52,58 @@ Array [
   "Upload",
 ]
 `;
+
+exports[`antd dist files exports modules correctly 2`] = `
+Array [
+  "Affix",
+  "Anchor",
+  "AutoComplete",
+  "Alert",
+  "BackTop",
+  "Badge",
+  "Breadcrumb",
+  "Button",
+  "Calendar",
+  "Card",
+  "Collapse",
+  "Carousel",
+  "Cascader",
+  "Checkbox",
+  "Col",
+  "DatePicker",
+  "Dropdown",
+  "Form",
+  "Icon",
+  "Input",
+  "InputNumber",
+  "Layout",
+  "LocaleProvider",
+  "message",
+  "Menu",
+  "Modal",
+  "notification",
+  "Pagination",
+  "Popconfirm",
+  "Popover",
+  "Progress",
+  "Radio",
+  "Rate",
+  "Row",
+  "Select",
+  "Slider",
+  "Spin",
+  "Steps",
+  "Switch",
+  "Table",
+  "Transfer",
+  "Tree",
+  "TreeSelect",
+  "Tabs",
+  "Tag",
+  "TimePicker",
+  "Timeline",
+  "Tooltip",
+  "Mention",
+  "Upload",
+]
+`;

tests/index.test.js

@@ -10,11 +10,13 @@ describe('antd dist files', () => {
   }
 
   const antd = require('../dist/antd'); // eslint-disable-line global-require
+  const antdInComponents = require('../components/'); // eslint-disable-line global-require
 
   // https://github.com/ant-design/ant-design/issues/1638
   // https://github.com/ant-design/ant-design/issues/1968
   it('exports modules correctly', () => {
     expect(Object.keys(antd)).toMatchSnapshot();
+    expect(Object.keys(antdInComponents)).toMatchSnapshot();
   });
 
   // https://github.com/ant-design/ant-design/issues/1970