Test migration to jest by hand

Apparently using regular expressions is way easier.

test/findKey/findKey.js

@@ -0,0 +1,2 @@
+const findKey = (obj, fn) => Object.keys(obj).find(key => fn(obj[key], key, obj));
+module.exports = findKey;

test/findKey/findKey.test.js

@@ -0,0 +1,17 @@
+const expect = require('expect');
+const findKey = require('./findKey.js');
+
+
+  test('findKey is a Function', () => {
+  expect(findKey).toBeInstanceOf(Function);
+});
+  t.deepEqual(findKey(
+  {
+    barney: { age: 36, active: true },
+    fred: { age: 40, active: false },
+    pebbles: { age: 1, active: true }
+  },
+  o => o['active']
+), 'barney', 'Returns the appropriate key');
+  
+