--- /dev/null
+<?php
+
+namespace Drupal\Tests\link\Kernel;
+
+use Drupal\Component\Utility\UrlHelper;
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Field\FieldItemInterface;
+use Drupal\Core\Url;
+use Drupal\entity_test\Entity\EntityTest;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\Tests\field\Kernel\FieldKernelTestBase;
+use Drupal\link\LinkItemInterface;
+
+/**
+ * Tests the new entity API for the link field type.
+ *
+ * @group link
+ */
+class LinkItemTest extends FieldKernelTestBase {
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = ['link'];
+
+ protected function setUp() {
+ parent::setUp();
+
+ // Create a generic, external, and internal link fields for validation.
+ FieldStorageConfig::create([
+ 'field_name' => 'field_test',
+ 'entity_type' => 'entity_test',
+ 'type' => 'link',
+ ])->save();
+ FieldConfig::create([
+ 'entity_type' => 'entity_test',
+ 'field_name' => 'field_test',
+ 'bundle' => 'entity_test',
+ 'settings' => ['link_type' => LinkItemInterface::LINK_GENERIC],
+ ])->save();
+ FieldStorageConfig::create([
+ 'field_name' => 'field_test_external',
+ 'entity_type' => 'entity_test',
+ 'type' => 'link',
+ ])->save();
+ FieldConfig::create([
+ 'entity_type' => 'entity_test',
+ 'field_name' => 'field_test_external',
+ 'bundle' => 'entity_test',
+ 'settings' => ['link_type' => LinkItemInterface::LINK_EXTERNAL],
+ ])->save();
+ FieldStorageConfig::create([
+ 'field_name' => 'field_test_internal',
+ 'entity_type' => 'entity_test',
+ 'type' => 'link',
+ ])->save();
+ FieldConfig::create([
+ 'entity_type' => 'entity_test',
+ 'field_name' => 'field_test_internal',
+ 'bundle' => 'entity_test',
+ 'settings' => ['link_type' => LinkItemInterface::LINK_INTERNAL],
+ ])->save();
+ }
+
+ /**
+ * Tests using entity fields of the link field type.
+ */
+ public function testLinkItem() {
+ // Create entity.
+ $entity = EntityTest::create();
+ $url = 'https://www.drupal.org?test_param=test_value';
+ $parsed_url = UrlHelper::parse($url);
+ $title = $this->randomMachineName();
+ $class = $this->randomMachineName();
+ $entity->field_test->uri = $parsed_url['path'];
+ $entity->field_test->title = $title;
+ $entity->field_test->first()->get('options')->set('query', $parsed_url['query']);
+ $entity->field_test->first()->get('options')->set('attributes', ['class' => $class]);
+ $this->assertEquals([
+ 'query' => $parsed_url['query'],
+ 'attributes' => [
+ 'class' => $class,
+ ],
+ 'external' => TRUE,
+ ], $entity->field_test->first()->getUrl()->getOptions());
+ $entity->name->value = $this->randomMachineName();
+ $entity->save();
+
+ // Verify that the field value is changed.
+ $id = $entity->id();
+ $entity = EntityTest::load($id);
+ $this->assertTrue($entity->field_test instanceof FieldItemListInterface, 'Field implements interface.');
+ $this->assertTrue($entity->field_test[0] instanceof FieldItemInterface, 'Field item implements interface.');
+ $this->assertEqual($entity->field_test->uri, $parsed_url['path']);
+ $this->assertEqual($entity->field_test[0]->uri, $parsed_url['path']);
+ $this->assertEqual($entity->field_test->title, $title);
+ $this->assertEqual($entity->field_test[0]->title, $title);
+ $this->assertEqual($entity->field_test->options['attributes']['class'], $class);
+ $this->assertEqual($entity->field_test->options['query'], $parsed_url['query']);
+
+ // Update only the entity name property to check if the link field data will
+ // remain intact.
+ $entity->name->value = $this->randomMachineName();
+ $entity->save();
+ $id = $entity->id();
+ $entity = EntityTest::load($id);
+ $this->assertEqual($entity->field_test->uri, $parsed_url['path']);
+ $this->assertEqual($entity->field_test->options['attributes']['class'], $class);
+ $this->assertEqual($entity->field_test->options['query'], $parsed_url['query']);
+
+ // Verify changing the field value.
+ $new_url = 'https://www.drupal.org';
+ $new_title = $this->randomMachineName();
+ $new_class = $this->randomMachineName();
+ $entity->field_test->uri = $new_url;
+ $entity->field_test->title = $new_title;
+ $entity->field_test->first()->get('options')->set('query', NULL);
+ $entity->field_test->first()->get('options')->set('attributes', ['class' => $new_class]);
+ $this->assertEqual($entity->field_test->uri, $new_url);
+ $this->assertEqual($entity->field_test->title, $new_title);
+ $this->assertEqual($entity->field_test->options['attributes']['class'], $new_class);
+ $this->assertNull($entity->field_test->options['query']);
+
+ // Read changed entity and assert changed values.
+ $entity->save();
+ $entity = EntityTest::load($id);
+ $this->assertEqual($entity->field_test->uri, $new_url);
+ $this->assertEqual($entity->field_test->title, $new_title);
+ $this->assertEqual($entity->field_test->options['attributes']['class'], $new_class);
+
+ // Check that if we only set uri the default values for title and options
+ // are also initialized.
+ $entity->field_test = ['uri' => 'internal:/node/add'];
+ $this->assertEqual($entity->field_test->uri, 'internal:/node/add');
+ $this->assertNull($entity->field_test->title);
+ $this->assertIdentical($entity->field_test->options, []);
+
+ // Check that if set uri and serialize options then the default values are
+ // properly initialized.
+ $entity->field_test = [
+ 'uri' => 'internal:/node/add',
+ 'options' => serialize(['query' => NULL]),
+ ];
+ $this->assertEqual($entity->field_test->uri, 'internal:/node/add');
+ $this->assertNull($entity->field_test->title);
+ $this->assertNull($entity->field_test->options['query']);
+
+ // Check that if we set the direct value of link field it correctly set the
+ // uri and the default values of the field.
+ $entity->field_test = 'internal:/node/add';
+ $this->assertEqual($entity->field_test->uri, 'internal:/node/add');
+ $this->assertNull($entity->field_test->title);
+ $this->assertIdentical($entity->field_test->options, []);
+
+ // Check that setting options to NULL does not trigger an error when
+ // calling getUrl();
+ $entity->field_test->options = NULL;
+ $this->assertInstanceOf(Url::class, $entity->field_test[0]->getUrl());
+
+ // Check that setting LinkItem value NULL doesn't generate any error or
+ // warning.
+ $entity->field_test[0] = NULL;
+ $this->assertNull($entity->field_test[0]->getValue());
+
+ // Test the generateSampleValue() method for generic, external, and internal
+ // link types.
+ $entity = EntityTest::create();
+ $entity->field_test->generateSampleItems();
+ $entity->field_test_external->generateSampleItems();
+ $entity->field_test_internal->generateSampleItems();
+ $this->entityValidateAndSave($entity);
+ }
+
+}
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