Test migration to jest by hand

Apparently using regular expressions is way easier.

test/defaults/defaults.test.js

@@ -0,0 +1,10 @@
+const expect = require('expect');
+const defaults = require('./defaults.js');
+
+
+  test('defaults is a Function', () => {
+  expect(defaults).toBeInstanceOf(Function);
+});
+  t.deepEqual(defaults({ a: 1 }, { b: 2 }, { b: 6 }, { a: 3 }), { a: 1, b: 2 }, 'Assigns default values for undefined properties');
+  
+