Test migration to jest by hand

Apparently using regular expressions is way easier.

test/renameKeys/renameKeys.test.js

@@ -0,0 +1,15 @@
+const expect = require('expect');
+const renameKeys = require('./renameKeys.js');
+
+
+  test('renameKeys is a Function', () => {
+  expect(renameKeys).toBeInstanceOf(Function);
+});
+
+  const obj = { name: 'Bobo', job: 'Front-End Master', shoeSize: 100 };
+  const renamedObj = renameKeys({ name: 'firstName', job: 'passion' }, obj);
+
+  t.deepEqual(renamedObj, { firstName: 'Bobo', passion: 'Front-End Master', shoeSize: 100 
+
+  
+