class LinkItemTest

class LinkItemTest extends FieldKernelTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'link',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        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->assertInstanceOf(FieldItemListInterface::class, $entity->field_test);
        $this->assertInstanceOf(FieldItemInterface::class, $entity->field_test[0]);
        $this->assertEquals($parsed_url['path'], $entity->field_test->uri);
        $this->assertEquals($parsed_url['path'], $entity->field_test[0]->uri);
        $this->assertEquals($title, $entity->field_test->title);
        $this->assertEquals($title, $entity->field_test[0]->title);
        $this->assertEquals($class, $entity->field_test->options['attributes']['class']);
        $this->assertEquals($parsed_url['query'], $entity->field_test->options['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);
        $this->assertEquals($parsed_url['path'], $entity->field_test->uri);
        $this->assertEquals($class, $entity->field_test->options['attributes']['class']);
        $this->assertEquals($parsed_url['query'], $entity->field_test->options['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,
        ]);
        $this->assertEquals($new_url, $entity->field_test->uri);
        $this->assertEquals($new_title, $entity->field_test->title);
        $this->assertEquals($new_class, $entity->field_test->options['attributes']['class']);
        $this->assertNull($entity->field_test->options['query']);
        // Read changed entity and assert changed values.
        $entity->save();
        $entity = EntityTest::load($id);
        $this->assertEquals($new_url, $entity->field_test->uri);
        $this->assertEquals($new_title, $entity->field_test->title);
        $this->assertEquals($new_class, $entity->field_test->options['attributes']['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->assertEquals('internal:/node/add', $entity->field_test->uri);
        $this->assertNull($entity->field_test->title);
        $this->assertSame([], $entity->field_test->options);
        // Check that if we set uri and options then the default values are properly
        // initialized.
        $entity->field_test = [
            'uri' => 'internal:/node/add',
            'options' => [
                'query' => NULL,
            ],
        ];
        $this->assertEquals('internal:/node/add', $entity->field_test->uri);
        $this->assertNull($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->assertEquals('internal:/node/add', $entity->field_test->uri);
        $this->assertNull($entity->field_test->title);
        $this->assertSame([], $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);
    }

}