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TypedDataLanguageRelationshipPluginTest.php in Chaos Tool Suite (ctools) 8.3

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tests/src/Kernel/TypedDataLanguageRelationshipPluginTest.php
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<?php

namespace Drupal\Tests\ctools\Kernel;

use Drupal\Core\Language\LanguageInterface;

/**
 * @coversDefaultClass \Drupal\ctools\Plugin\Relationship\TypedDataEntityRelationship
 * @group CTools
 */
class TypedDataLanguageRelationshipPluginTest extends RelationshipsTestBase {

  /**
   * @covers ::getName
   */
  public function testRelationshipName() {

    /** @var \Drupal\ctools\Plugin\RelationshipInterface $langcode_plugin */
    $langcode_plugin = $this->relationshipManager
      ->createInstance('typed_data_language_relationship:entity:node:langcode');
    $this
      ->assertSame('langcode', $langcode_plugin
      ->getName());
  }

  /**
   * @covers ::getRelationship
   *
   * @todo expand to include a new language.
   */
  public function testRelationship() {

    /** @var \Drupal\ctools\Plugin\RelationshipInterface $langcode_plugin */
    $langcode_plugin = $this->relationshipManager
      ->createInstance('typed_data_language_relationship:entity:node:langcode');
    $langcode_plugin
      ->setContextValue('base', $this->entities['node1']);
    $relationship = $langcode_plugin
      ->getRelationship();
    $this
      ->assertTrue($relationship
      ->getContextValue() instanceof LanguageInterface);
    $this
      ->assertSame('en', $relationship
      ->getContextValue()
      ->getId());
  }

}