Test migration to jest by hand

Apparently using regular expressions is way easier.

test/sdbm/sdbm.test.js

@@ -0,0 +1,9 @@
+const expect = require('expect');
+const sdbm = require('./sdbm.js');
+
+
+  test('sdbm is a Function', () => {
+  expect(sdbm).toBeInstanceOf(Function);
+});
+  t.equal(sdbm('name'), -3521204949, "Hashes the input string into a whole number.");
+