Test migration to jest by hand

Apparently using regular expressions is way easier.

test/RGBToHex/RGBToHex.test.js

@@ -0,0 +1,9 @@
+const expect = require('expect');
+const RGBToHex = require('./RGBToHex.js');
+
+
+  test('RGBToHex is a Function', () => {
+  expect(RGBToHex).toBeInstanceOf(Function);
+});
+  t.equal(RGBToHex(255, 165, 1), 'ffa501', "Converts the values of RGB components to a color code.");
+