brilo-example/tests/Web/ListPostControllerTest.php

<?php

declare(strict_types=1);

namespace App\Tests\Web;

use App\Entity\Database\Posts\Post;
use App\Tests\Common\DatabaseTestTrait;
use App\Tests\Common\FakerTrait;
use App\Tests\Common\Generators\PostGeneratorTrait;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
use Symfony\Component\BrowserKit\AbstractBrowser;

class ListPostControllerTest extends WebTestCase
{
    use DatabaseTestTrait;
    use FakerTrait;
    use PostGeneratorTrait;

    protected AbstractBrowser $client;

    protected function setUp(): void
    {
        $this->client = static::createClient();
        $this->bootDatabase();
        $this->bootFaker();
        $this->getFaker()->unique();
    }

    public function testPostListed(): void
    {

        $posts = $this->createTestPosts();

        $crawler = $this->client->request('GET', '/posts/1');


        $this->assertResponseIsSuccessful();
        $this->assertSelectorCount(3, '.t-detail-a'); // 3 posts are listed

        $displayedPosts = array_reverse(array_slice($posts, count($posts) - 3, 3)); // in ORDER by ID DESC

        /**
         * @var Post $post
         */
        foreach ($displayedPosts as $i => $post) { // check texts
            $this->assertSelectorTextContains('.t-post-detail:nth-child(' . ($i + 1) . ') .t-post-title', $this->truncateToWholeWords($post->title, 70));
            $text = $crawler->filter('.t-post-detail:nth-child(' . ($i + 1) . ') .t-post-title')->text();
            $this->assertLessThan(83, strlen($text), "Text $text too long"); // 80 + 3 extra characters for ellipsis
            $this->assertSelectorTextContains('.t-post-detail:nth-child(' . ($i + 1) . ') .t-post-body', $this->truncateToWholeWords($post->body, 70));
            $text = $crawler->filter('.t-post-detail:nth-child(' . ($i + 1) . ') .t-post-body')->text();
            $this->assertLessThan(83, strlen($text), "Text $text too long"); // 80 + 3 extra characters for ellipsis
        }
    }

    public function testPagination(): void
    {
        $posts = $this->createTestPosts();
        $crawler = $this->client->request('GET', '/posts/1');

        $this->assertResponseIsSuccessful();
        $this->assertSelectorCount(4 /* 3 -> normal, 1 -> last page */, '.t-pagination .t-page-item');

        $crawler = $this->client->click($crawler->filter('.t-pagination .t-page-item:nth-child(3) .t-page-link')->link());
        $this->assertSelectorCount(5 /* 3 -> normal, 2 -> first page, last page */, '.t-pagination .t-page-item');
    }

    public function testGoToNonExistentPage(): void
    {
        $this->createTestPosts();
        $this->client->request('GET', '/posts/999999');
        $this->assertResponseStatusCodeSame(302);
        $this->assertResponseHeaderSame('Location', '/posts/10' /* last page (30 posts /3 per page) */);
    }

    public function testGoToPageZero(): void
    {
        $this->createTestPosts();
        $this->client->request('GET', '/posts/0');
        $this->assertResponseStatusCodeSame(302);
        $this->assertResponseHeaderSame('Location', '/posts' /* go to first page */);
    }

    public function testGoToDefault(): void
    {
        $this->createTestPosts();
        $this->client->request('GET', '/');
        $this->assertResponseIsSuccessful();
        $this->assertSelectorCount(3, '.t-detail-a'); // 3 posts are listed
    }

    private function truncateToWholeWords(string $string, int $length): string
    {
        if (strlen($string) <= $length) {
            return $string;
        }

        // Find the last space within the allowed length
        $truncated = substr($string, 0, $length);
        $lastSpace = strrpos($truncated, ' ');

        // If there's no space, truncate to the exact length
        if ($lastSpace === false) {
            return substr($truncated, 0, $length);
        }

        return substr($truncated, 0, $lastSpace);
    }

    /**
     * @return Post[]
     */
    private function createTestPosts(): array
    {
        $posts = [];

        for ($i = 1; $i <= 30; $i++) {
            $posts[] = $this->createPost($i);
        }

        return $posts;
    }
}