<?php

use App\Services\SelectionMapper;

it('maps pixels to cell units correctly', function () {
    $mapper = new SelectionMapper;

    // Example: canvas selection starting at (50,40) with size 60x40,
    // canvas offset (pan) is (10,20) and cell size is 20px.
    $result = $mapper->mapPixelsToCells(50, 40, 60, 40, 10, 20, 20);

    expect(is_array($result))->toBeTrue();
    expect($result['x'])->toBe(2); // (50-10)/20 = 2
    expect($result['y'])->toBe(1); // (40-20)/20 = 1
    expect($result['w'])->toBe(3); // 60/20 = 3
    expect($result['h'])->toBe(2); // 40/20 = 2
});