<?php

use App\Models\Cart;
use App\Models\Product;
use App\Models\User;
use Illuminate\Foundation\Testing\RefreshDatabase;

uses(RefreshDatabase::class);

test('a cart belongs to a user when one is set', function () {
    $user = User::factory()->create();
    $cart = Cart::factory()->create(['user_id' => $user->id]);

    expect($cart->user->id)->toBe($user->id);
});

test('a cart can exist without a user', function () {
    $cart = Cart::factory()->create(['user_id' => null]);

    expect($cart->user)->toBeNull();
});

test('a user has one cart', function () {
    $user = User::factory()->create();
    Cart::factory()->create(['user_id' => $user->id]);

    expect($user->cart)->toBeInstanceOf(Cart::class);
});

test('a cart can have products with quantities', function () {
    $cart = Cart::factory()->create(['user_id' => null]);
    $product = Product::factory()->create();

    $cart->products()->attach($product->id, ['quantity' => 3]);

    expect($cart->products)->toHaveCount(1);
    expect($cart->products->first()->pivot->quantity)->toBe(3);
});