Add test case for upload

components/upload/__tests__/upload.test.js

@@ -0,0 +1,25 @@
+/* eslint-disable react/no-string-refs, react/prefer-es6-class */
+import React from 'react';
+import { mount } from 'enzyme';
+import Upload from '..';
+
+describe('Upload', () => {
+  // https://github.com/react-component/upload/issues/36
+  it('should get refs inside Upload in componentDidMount', () => {
+    let ref;
+    const App = React.createClass({
+      componentDidMount() {
+        ref = this.refs.input;
+      },
+      render() {
+        return (
+          <Upload supportServerRender={false}>
+            <input ref="input" />
+          </Upload>
+        );
+      },
+    });
+    mount(<App />);
+    expect(ref).toBeDefined();
+  });
+});