Test migration to jest by hand

Apparently using regular expressions is way easier.

test/flip/flip.js

@@ -0,0 +1,2 @@
+const flip = fn => (first, ...rest) => fn(...rest, first);
+module.exports = flip;

test/flip/flip.test.js

@@ -0,0 +1,14 @@
+const expect = require('expect');
+const flip = require('./flip.js');
+
+
+  test('flip is a Function', () => {
+  expect(flip).toBeInstanceOf(Function);
+});
+  let a = { name: 'John Smith' };
+  let b = {};
+  const mergeFrom = flip(Object.assign);
+  let mergePerson = mergeFrom.bind(null, a);
+  t.deepEqual(mergePerson(b), a, 'Flips argument order');
+  
+