Test migration to jest by hand

Apparently using regular expressions is way easier.

test/dropRightWhile/dropRightWhile.js

@@ -0,0 +1,5 @@
+const dropRightWhile = (arr, func) => {
+while (arr.length > 0 && !func(arr[arr.length - 1])) arr = arr.slice(0, -1);
+return arr;
+};
+module.exports = dropRightWhile;

test/dropRightWhile/dropRightWhile.test.js

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