tests(e2e): add install page test

Author: fadrian06

tests/Feature/InstallTest.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Feature;
+
+use DOMDocument;
+use PHPUnit\Framework\Attributes\Test;
+
+final class InstallTest extends FeatureTestCase {
+    #[Test]
+    function it_shows_install_page(): void {
+        $response = self::$client->get('./es/v3/install');
+        $html = new DOMDocument;
+        @$html->loadHTML($response->getBody()->getContents());
+        $title = $html->getElementsByTagName('title')->item(0);
+        $jumbotron = $html->getElementsByTagName('h1')->item(0);
+
+        self::assertSame(200, $response->getStatusCode());
+        self::assertStringContainsString('Instalación', $title->textContent);
+        self::assertSame('Instalación', $jumbotron->textContent);
+    }
+}