import { describe, it, expect } from "vitest";
import { createUser, serializeUser } from "../src/models/user.js";

describe("User model", () => {
  it("creates a user with valid email", () => {
    const user = createUser({ email: "alice@example.com", name: "Alice" });
    expect(user.email).toBe("alice@example.com");
    expect(user.name).toBe("Alice");
    expect(user.id).toBeDefined();
    expect(user.createdAt).toBeInstanceOf(Date);
  });

  it("throws on invalid email", () => {
    expect(() =>
      createUser({ email: "not-an-email", name: "Bob" }),
    ).toThrow("Invalid email");
  });

  it("serializes to JSON", () => {
    const user = createUser({ email: "charlie@example.com", name: "Charlie" });
    const json = serializeUser(user);
    expect(JSON.parse(json).name).toBe("Charlie");
  });
});