Updated the test system

test/UUIDGeneratorNode.test.js

@@ -0,0 +1,13 @@
+const expect = require('expect');
+const {UUIDGeneratorNode} = require('./_30s.js');
+
+test('UUIDGeneratorNode is a Function', () => {
+  expect(UUIDGeneratorNode).toBeInstanceOf(Function);
+});
+const uuid = UUIDGeneratorNode();
+test('Contains dashes in the proper places', () => {
+  expect([uuid[8], uuid[13], uuid[18], uuid[23]]).toEqual(['-', '-', '-', '-']);
+});
+test('Only contains hexadecimal digits', () => {
+  expect(/^[0-9A-Fa-f-]+$/.test(uuid)).toBeTruthy();
+});