Test migration to jest by hand

Apparently using regular expressions is way easier.

test/isDivisible/isDivisible.test.js

@@ -0,0 +1,9 @@
+const expect = require('expect');
+const isDivisible = require('./isDivisible.js');
+
+
+  test('isDivisible is a Function', () => {
+  expect(isDivisible).toBeInstanceOf(Function);
+});
+  t.equal(isDivisible(6, 3), true, 'The number 6 is divisible by 3');
+