Issue #3165435 by Rajab Natshah, thejimbirch: Fix tour <front> route as route...

Issue #3165435 by Rajab Natshah, thejimbirch: Fix tour route as route name when a selected node had been set as the front page for the site

Closes #3165435

tests/src/Functional/System/FrontPageTourTest.php

+<?php
+
+namespace Drupal\Tests\system\Functional;
+
+use Drupal\Tests\tour\Functional\TourTestBase;
+use Drupal\user\UserInterface;
+
+/**
+ * Tests tour functionality.
+ *
+ * @group system
+ */
+class FrontPageTourTest extends TourTestBase {
+
+  /**
+   * An admin user with administrative permissions for views.
+   *
+   * @var \Drupal\user\UserInterface
+   */
+  protected UserInterface $adminUser;
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  protected static $modules = [
+    'block',
+    'tour',
+    'system',
+    'node',
+    'tour_test',
+    ];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $defaultTheme = 'stark';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp(): void {
+    parent::setUp();
+    $this->adminUser = $this->drupalCreateUser([
+      'administer themes',
+      'access tour',
+    ]);
+    $this->drupalLogin($this->adminUser);
+    $this->drupalPlaceBlock('local_actions_block');
+
+    $this->drupalCreateContentType(['type' => 'page']);
+    $id = $this->drupalCreateNode(['promote' => 1])->id();
+
+    // Configure 'node' as front page.
+    $this->config('system.site')->set('page.front', '/node/' . $id)->save();
+  }
+
+  /**
+   * Test tips appear for frontpage.
+   */
+  public function testFrontPageTour(): void {
+    $this->drupalGet('<front>');
+    $this->assertTourTips();
+  }
+
+}