/*
 * =============================================================================
 *  VibeQuant (vquant) — AI-Powered Financial Intelligence Platform
 * -----------------------------------------------------------------------------
 *  File:      client/src/lib/utils.test.ts
 *
 *  Author:    Simon-Pierre Boucher
 *  Contact:   contact@spboucher.ai
 *  Website:   https://www.spboucher.ai
 *  Demo:      https://www.vquant.ai
 *  License:   MIT (see LICENSE)
 *
 *  Copyright © 2026 Simon-Pierre Boucher. All rights reserved.
 * =============================================================================
 */

import { describe, it, expect } from "vitest";
import { cn } from "./utils";

describe("cn (className merge)", () => {
  it("merges class names", () => {
    expect(cn("px-2", "py-1")).toBe("px-2 py-1");
  });

  it("handles conditional classes", () => {
    const isHidden = false;
    expect(cn("base", isHidden && "hidden", "extra")).toBe("base extra");
  });

  it("deduplicates tailwind conflicts", () => {
    expect(cn("px-2", "px-4")).toBe("px-4");
  });

  it("handles empty inputs", () => {
    expect(cn()).toBe("");
  });

  it("handles undefined and null", () => {
    expect(cn("base", undefined, null)).toBe("base");
  });
});