Test migration to jest by hand

Apparently using regular expressions is way easier.

test/nthArg/nthArg.js

@@ -0,0 +1,2 @@
+const nthArg = n => (...args) => args.slice(n)[0];
+module.exports = nthArg;

test/nthArg/nthArg.test.js

@@ -0,0 +1,14 @@
+const expect = require('expect');
+const nthArg = require('./nthArg.js');
+
+
+  test('nthArg is a Function', () => {
+  expect(nthArg).toBeInstanceOf(Function);
+});
+  const third = nthArg(2);
+  t.equal(third(1, 2, 3), 3, 'Returns the nth argument');
+  t.equal(third(1, 2), undefined, 'Returns undefined if arguments too few');
+  const last = nthArg(-1);
+  t.equal(last(1, 2, 3, 4, 5), 5, 'Works for negative values');
+  
+