Test migration to jest by hand

Apparently using regular expressions is way easier.

test/findLast/findLast.js

@@ -0,0 +1,2 @@
+const findLast = (arr, fn) => arr.filter(fn).pop();
+module.exports = findLast;

test/findLast/findLast.test.js

@@ -0,0 +1,10 @@
+const expect = require('expect');
+const findLast = require('./findLast.js');
+
+
+  test('findLast is a Function', () => {
+  expect(findLast).toBeInstanceOf(Function);
+});
+  t.equal(findLast([1, 2, 3, 4], n => n % 2 === 1), 3, 'Finds last element for which the given function returns true');
+  
+