Test migration to jest by hand

Apparently using regular expressions is way easier.

test/dropWhile/dropWhile.test.js

@@ -0,0 +1,10 @@
+const expect = require('expect');
+const dropWhile = require('./dropWhile.js');
+
+
+  test('dropWhile is a Function', () => {
+  expect(dropWhile).toBeInstanceOf(Function);
+});
+  t.deepEqual(dropWhile([1, 2, 3, 4], n => n >= 3), [3,4], 'Removes elements in an array until the passed function returns true.');
+  
+