fix: restore Jest setup after cheerio upgrade

+ ignore null children in toolbar collapse count

Author: Nicolass67

src/__tests__/units/components/panel/info.test.js

@@ -1,5 +1,5 @@
 import React from "react";
-import { render } from '@testing-library/react'; 
+import { render, screen } from '@testing-library/react'; 
 import InfoPanel from '../../../../components/panel/info';
 import configureStore from 'redux-mock-store'
 import { Provider } from 'react-redux';

src/components/cmd_bar/collapsible_toolbar_group.js

@@ -42,9 +42,7 @@ const styles = () => ({
   },
 });
 
-const countItems = (children) => (
-  React.Children.toArray(children).filter((child) => child != null && child !== false).length
-);
+const countItems = (children) => React.Children.toArray(children).length;
 
 const CollapsibleToolbarGroup = ({
   classes, className, children, collapseThreshold, ...rest

src/setupTests.js

@@ -1,3 +1,12 @@
+const { TextDecoder, TextEncoder } = require('util');
+
+if (typeof global.TextDecoder === 'undefined') {
+  global.TextDecoder = TextDecoder;
+}
+if (typeof global.TextEncoder === 'undefined') {
+  global.TextEncoder = TextEncoder;
+}
+
 const Enzyme = require('enzyme');
 const AdapterModule = require('@wojtekmaj/enzyme-adapter-react-17');
 const Adapter = AdapterModule.default || AdapterModule;