class PageNotFoundTest

class PageNotFoundTest extends BrowserTestBase {
    use AssertPageCacheContextsAndTagsTrait;
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'system_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    protected $adminUser;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Create an administrative user.
        $this->adminUser = $this->drupalCreateUser([
            'administer site configuration',
            'link to any page',
        ]);
        $this->adminUser->roles[] = 'administrator';
        $this->adminUser
            ->save();
        user_role_grant_permissions(RoleInterface::ANONYMOUS_ID, [
            'access user profiles',
        ]);
        user_role_grant_permissions(RoleInterface::AUTHENTICATED_ID, [
            'access user profiles',
        ]);
    }
    public function testPageNotFound() {
        $this->drupalLogin($this->adminUser);
        $this->drupalGet($this->randomMachineName(10));
        $this->assertSession()
            ->pageTextContains('Page not found');
        // Set a custom 404 page without a starting slash.
        $edit = [
            'site_404' => 'user/' . $this->adminUser
                ->id(),
        ];
        $this->drupalGet('admin/config/system/site-information');
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->pageTextContains("The path '{$edit['site_404']}' has to start with a slash.");
        // Use a custom 404 page.
        $edit = [
            'site_404' => '/user/' . $this->adminUser
                ->id(),
        ];
        $this->drupalGet('admin/config/system/site-information');
        $this->submitForm($edit, 'Save configuration');
        $this->drupalGet($this->randomMachineName(10));
        $this->assertSession()
            ->pageTextContains($this->adminUser
            ->getAccountName());
    }
    
    /**
     * Tests that an inaccessible custom 404 page falls back to the default.
     */
    public function testPageNotFoundCustomPageWithAccessDenied() {
        // Sets up a 404 page not accessible by the anonymous user.
        $this->config('system.site')
            ->set('page.404', '/system-test/custom-4xx')
            ->save();
        $this->drupalGet('/this-path-does-not-exist');
        $this->assertSession()
            ->pageTextNotContains('Admin-only 4xx response');
        $this->assertSession()
            ->pageTextContains('The requested page could not be found.');
        $this->assertSession()
            ->statusCodeEquals(404);
        // Verify the access cacheability metadata for custom 404 is bubbled.
        $this->assertCacheContext('user.roles');
        $this->drupalLogin($this->adminUser);
        $this->drupalGet('/this-path-does-not-exist');
        $this->assertSession()
            ->pageTextContains('Admin-only 4xx response');
        $this->assertSession()
            ->pageTextNotContains('The requested page could not be found.');
        $this->assertSession()
            ->statusCodeEquals(404);
        // Verify the access cacheability metadata for custom 404 is bubbled.
        $this->assertCacheContext('user.roles');
    }

}