Test migration to jest by hand

Apparently using regular expressions is way easier.

test/partition/partition.js

@@ -0,0 +1,9 @@
+const partition = (arr, fn) =>
+arr.reduce(
+(acc, val, i, arr) => {
+acc[fn(val, i, arr) ? 0 : 1].push(val);
+return acc;
+},
+[[], []]
+);
+module.exports = partition;

test/partition/partition.test.js

@@ -0,0 +1,10 @@
+const expect = require('expect');
+const partition = require('./partition.js');
+
+
+  test('partition is a Function', () => {
+  expect(partition).toBeInstanceOf(Function);
+});
+  const users = [{ user: 'barney', age: 36, active: false }, { user: 'fred', age: 40, active: true }];
+  t.deepEqual(partition(users, o => o.active), [[{ 'user': 'fred',    'age': 40, 'active': true }],[{ 'user': 'barney',  'age': 36, 'active': false }]], "Groups the elements into two arrays, depending on the provided function's truthiness for each element.");
+