Test migration to jest by hand

Apparently using regular expressions is way easier.

test/URLJoin/URLJoin.test.js

@@ -0,0 +1,11 @@
+const expect = require('expect');
+const URLJoin = require('./URLJoin.js');
+
+
+  test('URLJoin is a Function', () => {
+  expect(URLJoin).toBeInstanceOf(Function);
+});
+  t.equal(URLJoin('http:
+  t.equal(URLJoin('file:
+  
+