--- /dev/null
+<?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());
+ }
+
+}