Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Tests\rdf\Functional;
Chris@0: 
Chris@0: use Drupal\Tests\BrowserTestBase;
Chris@0: 
Chris@0: /**
Chris@0:  * Tests hook_rdf_namespaces().
Chris@0:  *
Chris@0:  * @group rdf
Chris@0:  */
Chris@0: class GetRdfNamespacesTest extends BrowserTestBase {
Chris@0: 
Chris@0:   /**
Chris@0:    * Modules to enable.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   public static $modules = ['rdf', 'rdf_test_namespaces'];
Chris@0: 
Chris@0:   /**
Chris@0:    * Tests getting RDF namespaces.
Chris@0:    */
Chris@0:   public function testGetRdfNamespaces() {
Chris@16:     // Fetches the front page and extracts RDFa 1.1 prefixes.
Chris@16:     $this->drupalGet('');
Chris@16: 
Chris@16:     // We have to use the find() method on the driver directly because //html is
Chris@16:     // prepended to all xpath queries otherwise.
Chris@16:     $driver = $this->getSession()->getDriver();
Chris@16: 
Chris@16:     $element = $driver->find('//html[contains(@prefix, "rdfs: http://www.w3.org/2000/01/rdf-schema#")]');
Chris@16:     $this->assertCount(1, $element, 'A prefix declared once is displayed.');
Chris@16: 
Chris@16:     $element = $driver->find('//html[contains(@prefix, "foaf: http://xmlns.com/foaf/0.1/")]');
Chris@16:     $this->assertCount(1, $element, 'The same prefix declared in several implementations of hook_rdf_namespaces() is valid as long as all the namespaces are the same.');
Chris@16: 
Chris@16:     $element = $driver->find('//html[contains(@prefix, "foaf1: http://xmlns.com/foaf/0.1/")]');
Chris@16:     $this->assertCount(1, $element, 'Two prefixes can be assigned the same namespace.');
Chris@16: 
Chris@16:     $element = $driver->find('//html[contains(@prefix, "dc: http://purl.org/dc/terms/")]');
Chris@16:     $this->assertCount(1, $element, 'When a prefix has conflicting namespaces, the first declared one is used.');
Chris@16: 
Chris@0:     // Get all RDF namespaces.
Chris@0:     $ns = rdf_get_namespaces();
Chris@0: 
Chris@0:     $this->assertEqual($ns['rdfs'], 'http://www.w3.org/2000/01/rdf-schema#', 'A prefix declared once is included.');
Chris@0:     $this->assertEqual($ns['foaf'], 'http://xmlns.com/foaf/0.1/', 'The same prefix declared in several implementations of hook_rdf_namespaces() is valid as long as all the namespaces are the same.');
Chris@0:     $this->assertEqual($ns['foaf1'], 'http://xmlns.com/foaf/0.1/', 'Two prefixes can be assigned the same namespace.');
Chris@0: 
Chris@0:     // Enable rdf_conflicting_namespaces to ensure that an exception is thrown
Chris@0:     // when RDF namespaces are conflicting.
Chris@0:     \Drupal::service('module_installer')->install(['rdf_conflicting_namespaces'], TRUE);
Chris@0:     try {
Chris@0:       $ns = rdf_get_namespaces();
Chris@0:       $this->fail('Expected exception not thrown for conflicting namespace declaration.');
Chris@0:     }
Chris@0:     catch (\Exception $e) {
Chris@0:       $this->pass('Expected exception thrown: ' . $e->getMessage());
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0: }