numeric-uuid/test/numeric_uuid.test.js

A simple library to generate unique numeric UUIDs

const NumericUUID = require("../index");

test("Generates a unique numeric UUID of correct length", () => {
  const id = NumericUUID.generate(20);
  expect(id.length).toBe(20);
  expect(!isNaN(id)).toBe(true);
});

test("Throws error for invalid length", () => {
  expect(() => NumericUUID.generate(9)).toThrow();
  expect(() => NumericUUID.generate(31)).toThrow();
});

test("Generates different UUIDs on each call", () => {
  const id1 = NumericUUID.generate();
  const id2 = NumericUUID.generate();
  expect(id1).not.toBe(id2);
});