import { UniqueID } from "../unique-id";

// Mock UUID generation to ensure predictable tests
jest.mock("uuid", () => ({ v4: () => "123e4567-e89b-12d3-a456-426614174000" }));

describe("UniqueID", () => {
  test("should create a UniqueID with a valid UUID", () => {
    const id = "123e4567-e89b-12d3-a456-426614174000";
    const result = UniqueID.create(id);

    expect(result.isSuccess).toBe(true);
    expect(result.data.toString()).toBe(id);
  });

  test("should generate a UniqueID with a valid UUID", () => {
    const result = UniqueID.generate();

    expect(result.isSuccess).toBe(true);
    expect(result.data.toString()).toBeTruthy();
  });

  test("should fail to create UniqueID with an invalid UUID", () => {
    const result = UniqueID.create("invalid-uuid");

    expect(result.isFailure).toBe(true);
  });

  test("should fail when id is undefined and generateOnEmpty is false", () => {
    const result = UniqueID.create(undefined, false);

    expect(result.isFailure).toBe(true);
  });

  test("should generate a new UUID when id is undefined and generateOnEmpty is true", () => {
    const result = UniqueID.create(undefined, true);

    expect(result.isSuccess).toBe(true);
    expect(result.data?.toString()).toBeTruthy();
  });

  test("should fail when id is null", () => {
    const result = UniqueID.create(null as any);

    expect(result.isFailure).toBe(true);
  });

  test("should create a UniqueID when id is an empty string and generateOnEmpty is true", () => {
    const result = UniqueID.create("   ", true);

    expect(result.isSuccess).toBe(true);
    expect(result.data?.toString()).toBeTruthy();
  });

  test("should fail when id is an empty string and generateOnEmpty is false", () => {
    const result = UniqueID.create("   ", false);

    expect(result.isFailure).toBe(true);
  });
});