Test migration to jest by hand

Apparently using regular expressions is way easier.

test/forOwn/forOwn.test.js

@@ -0,0 +1,12 @@
+const expect = require('expect');
+const forOwn = require('./forOwn.js');
+
+
+  test('forOwn is a Function', () => {
+  expect(forOwn).toBeInstanceOf(Function);
+});
+  let output = [];
+  forOwn({ foo: 'bar', a: 1 }, v => output.push(v));
+  t.deepEqual(output, ['bar', 1], 'Iterates over an element\'s key-value pairs');
+  
+