Update testing platform

Author: wojtekmaj

jest.setup.js

@@ -0,0 +1,4 @@
+import Enzyme from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+
+Enzyme.configure({ adapter: new Adapter() });

jest.shim.js

@@ -0,0 +1,5 @@
+if (!global.requestAnimationFrame) {
+  global.requestAnimationFrame = function(callback) {
+    setTimeout(callback, 0);
+  };
+}

src/__tests__/DateInput.jsx

@@ -1,11 +1,8 @@
 import React from 'react';
-import { configure, mount } from 'enzyme';
-import Adapter from 'enzyme-adapter-react-16';
+import { mount } from 'enzyme';
 
 import DateInput from '../DateInput';
 
-configure({ adapter: new Adapter() });
-
 /* eslint-disable comma-dangle */
 
 describe('DateInput', () => {

src/__tests__/DatePicker.jsx

@@ -1,11 +1,8 @@
 import React from 'react';
-import { configure, mount } from 'enzyme';
-import Adapter from 'enzyme-adapter-react-16';
+import { mount } from 'enzyme';
 
 import DatePicker from '../DatePicker';
 
-configure({ adapter: new Adapter() });
-
 /* eslint-disable comma-dangle */
 
 jest.mock('../../node_modules/react-calendar/build/Calendar.less', () => ({}));