AttributesUnitTest.php

<?php

/**
 * @file
 * Definition of Drupal\system\Tests\Common\AttributesUnitTest.
 */
namespace Drupal\system\Tests\Common;

use Drupal\Core\Template\Attribute;
use Drupal\simpletest\UnitTestBase;

/**
 * Tests the Drupal\Core\Template\Attribute functionality.
 */
class AttributesUnitTest extends UnitTestBase {
  public static function getInfo() {
    return array(
      'name' => 'HTML Attributes',
      'description' => 'Tests the Drupal\\Core\\Template\\Attribute functionality.',
      'group' => 'Common',
    );
  }

  /**
   * Tests that drupal_html_class() cleans the class name properly.
   */
  function testDrupalAttributes() {

    // Verify that special characters are HTML encoded.
    $this
      ->assertIdentical((string) new Attribute(array(
      'title' => '&"\'<>',
    )), ' title="&amp;&quot;&#039;&lt;&gt;"', 'HTML encode attribute values.');

    // Verify multi-value attributes are concatenated with spaces.
    $attributes = array(
      'class' => array(
        'first',
        'last',
      ),
    );
    $this
      ->assertIdentical((string) new Attribute(array(
      'class' => array(
        'first',
        'last',
      ),
    )), ' class="first last"', 'Concatenate multi-value attributes.');

    // Verify empty attribute values are rendered.
    $this
      ->assertIdentical((string) new Attribute(array(
      'alt' => '',
    )), ' alt=""', 'Empty attribute value #1.');
    $this
      ->assertIdentical((string) new Attribute(array(
      'alt' => NULL,
    )), ' alt=""', 'Empty attribute value #2.');

    // Verify multiple attributes are rendered.
    $attributes = array(
      'id' => 'id-test',
      'class' => array(
        'first',
        'last',
      ),
      'alt' => 'Alternate',
    );
    $this
      ->assertIdentical((string) new Attribute($attributes), ' id="id-test" class="first last" alt="Alternate"', 'Multiple attributes.');

    // Verify empty attributes array is rendered.
    $this
      ->assertIdentical((string) new Attribute(array()), '', 'Empty attributes array.');
    $attributes_array = array(
      'key1' => 'value1',
    );
    $attribute = new Attribute($attributes_array);
    foreach ($attribute as $value) {
      $this
        ->assertIdentical((string) $value, 'value1', 'Iterate over attribute.');
    }
  }

}