Migrated tests to jest

Used jest-codemods to migrate, will have to pass everything by hand before we can merge.

test3/hide/hide.js

@@ -0,0 +1,2 @@
+const hide = (...el) => [...el].forEach(e => (e.style.display = 'none'));
+module.exports = hide;

test3/hide/hide.test.js

@@ -0,0 +1,8 @@
+const expect = require('expect');
+const hide = require('./hide.js');
+
+test('Testing hide', () => {
+  //For more information on all the methods supported by tape
+  //Please go to https://github.com/substack/tape
+  expect(typeof hide === 'function').toBeTruthy();
+});