class FieldCrudTest

class FieldCrudTest extends FieldKernelTestBase {
    
    /**
     * The field storage entity.
     *
     * @var \Drupal\field\Entity\FieldStorageConfig
     */
    protected $fieldStorage;
    
    /**
     * The field entity definition.
     *
     * @var array
     */
    protected $fieldStorageDefinition;
    
    /**
     * The field entity definition.
     *
     * @var array
     */
    protected $fieldDefinition;
    
    /**
     * {@inheritdoc}
     */
    public function setUp() : void {
        parent::setUp();
        $this->fieldStorageDefinition = [
            'field_name' => mb_strtolower($this->randomMachineName()),
            'entity_type' => 'entity_test',
            'type' => 'test_field',
        ];
        $this->fieldStorage = FieldStorageConfig::create($this->fieldStorageDefinition);
        $this->fieldStorage
            ->save();
        $this->fieldDefinition = [
            'field_name' => $this->fieldStorage
                ->getName(),
            'entity_type' => 'entity_test',
            'bundle' => 'entity_test',
        ];
    }
    // TODO : test creation with
    // - a full fledged $field structure, check that all the values are there
    // - a minimal $field structure, check all default values are set
    // defer actual $field comparison to a helper function, used for the two cases above,
    // and for testUpdateField
    
    /**
     * Tests the creation of a field.
     */
    public function testCreateField() {
        $field = FieldConfig::create($this->fieldDefinition);
        $field->save();
        $field = FieldConfig::load($field->id());
        $this->assertEquals('TRUE', $field->getSetting('field_setting_from_config_data'));
        $this->assertNull($field->getSetting('config_data_from_field_setting'));
        // Read the configuration. Check against raw configuration data rather than
        // the loaded ConfigEntity, to be sure we check that the defaults are
        // applied on write.
        $config = $this->config('field.field.' . $field->id())
            ->get();
        $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
        $this->assertTrue($config['settings']['config_data_from_field_setting']);
        $this->assertTrue(!isset($config['settings']['field_setting_from_config_data']));
        // Since we are working with raw configuration, this needs to be unset
        // manually.
        // @see Drupal\field_test\Plugin\Field\FieldType\TestItem::fieldSettingsFromConfigData()
        unset($config['settings']['config_data_from_field_setting']);
        // Check that default values are set.
        $this->assertFalse($config['required'], 'Required defaults to false.');
        $this->assertSame($config['label'], $this->fieldDefinition['field_name'], 'Label defaults to field name.');
        $this->assertSame('', $config['description'], 'Description defaults to empty string.');
        // Check that default settings are set.
        $this->assertEquals($config['settings'], $field_type_manager->getDefaultFieldSettings($this->fieldStorageDefinition['type']), 'Default field settings have been written.');
        // Check that the denormalized 'field_type' was properly written.
        $this->assertEquals($config['field_type'], $this->fieldStorageDefinition['type']);
        // Guarantee that the field/bundle combination is unique.
        try {
            FieldConfig::create($this->fieldDefinition)
                ->save();
            $this->fail('Cannot create two fields with the same field / bundle combination.');
        } catch (EntityStorageException $e) {
            // Expected exception; just continue testing.
        }
        // Check that the specified field exists.
        try {
            $this->fieldDefinition['field_name'] = $this->randomMachineName();
            FieldConfig::create($this->fieldDefinition)
                ->save();
            $this->fail('Cannot create a field with a non-existing storage.');
        } catch (FieldException $e) {
            // Expected exception; just continue testing.
        }
        // TODO: test other failures.
    }
    
    /**
     * Tests setting and adding property constraints to a configurable field.
     *
     * @covers ::setPropertyConstraints
     * @covers ::addPropertyConstraints
     */
    public function testFieldPropertyConstraints() {
        $field = FieldConfig::create($this->fieldDefinition);
        $field->save();
        $field_name = $this->fieldStorage
            ->getName();
        // Test that constraints are applied to configurable fields. A TestField and
        // a Range constraint are added dynamically to limit the field to values
        // between 0 and 32.
        // @see field_test_entity_bundle_field_info_alter()
        \Drupal::state()->set('field_test_constraint', $field_name);
        // Clear the field definitions cache so the new constraints added by
        // field_test_entity_bundle_field_info_alter() are taken into consideration.
        \Drupal::service('entity_field.manager')->clearCachedFieldDefinitions();
        // Test the newly added property constraints in the same request as when the
        // caches were cleared. This will test the field definitions that are stored
        // in the static cache of
        // \Drupal\Core\Entity\EntityFieldManager::getFieldDefinitions().
        $this->doFieldPropertyConstraintsTests();
        // In order to test a real-world scenario where the property constraints are
        // only stored in the persistent cache of
        // \Drupal\Core\Entity\EntityFieldManager::getFieldDefinitions(), we need to
        // simulate a new request by removing the 'entity_field.manager' service,
        // thus forcing it to be re-initialized without static caches.
        \Drupal::getContainer()->set('entity_field.manager', NULL);
        // This will test the field definitions that are stored in the persistent
        // cache by \Drupal\Core\Entity\EntityFieldManager::getFieldDefinitions().
        $this->doFieldPropertyConstraintsTests();
    }
    
    /**
     * Tests configurable field validation.
     *
     * @see field_test_entity_bundle_field_info_alter()
     */
    protected function doFieldPropertyConstraintsTests() {
        $field_name = $this->fieldStorage
            ->getName();
        // Check that a valid value (not -2 and between 0 and 32) doesn't trigger
        // any violation.
        $entity = EntityTest::create();
        $entity->set($field_name, 1);
        $violations = $entity->validate();
        $this->assertCount(0, $violations, 'No violations found when in-range value passed.');
        // Check that a value that is specifically restricted triggers both
        // violations.
        $entity->set($field_name, -2);
        $violations = $entity->validate();
        $this->assertCount(2, $violations, 'Two violations found when using a null and outside the range value.');
        $this->assertEquals($field_name . '.0.value', $violations[0]->getPropertyPath());
        $this->assertEquals(t('%name does not accept the value @value.', [
            '%name' => $field_name,
            '@value' => -2,
        ]), $violations[0]->getMessage());
        $this->assertEquals($field_name . '.0.value', $violations[1]->getPropertyPath());
        $this->assertEquals(t('This value should be %limit or more.', [
            '%limit' => 0,
        ]), $violations[1]->getMessage());
        // Check that a value that is not specifically restricted but outside the
        // range triggers the expected violation.
        $entity->set($field_name, 33);
        $violations = $entity->validate();
        $this->assertCount(1, $violations, 'Violations found when using value outside the range.');
        $this->assertEquals($field_name . '.0.value', $violations[0]->getPropertyPath());
        $this->assertEquals(t('This value should be %limit or less.', [
            '%limit' => 32,
        ]), $violations[0]->getMessage());
    }
    
    /**
     * Tests creating a field with custom storage set.
     */
    public function testCreateFieldCustomStorage() {
        $field_name = mb_strtolower($this->randomMachineName());
        \Drupal::state()->set('field_test_custom_storage', $field_name);
        $field_storage = FieldStorageConfig::create([
            'field_name' => $field_name,
            'entity_type' => 'entity_test',
            'type' => 'test_field',
            'custom_storage' => TRUE,
        ]);
        $field_storage->save();
        $field = FieldConfig::create([
            'field_name' => $field_storage->getName(),
            'entity_type' => 'entity_test',
            'bundle' => 'entity_test',
        ]);
        $field->save();
        \Drupal::service('entity_field.manager')->clearCachedFieldDefinitions();
        // Check that no table has been created for the field.
        $this->assertFalse(\Drupal::database()->schema()
            ->tableExists('entity_test__' . $field_storage->getName()));
        // Save an entity with a value in the custom storage field and verify no
        // data is retrieved on load.
        $entity = EntityTest::create([
            'name' => $this->randomString(),
            $field_name => 'Test value',
        ]);
        $this->assertSame('Test value', $entity->{$field_name}->value, 'The test value is set on the field.');
        $entity->save();
        $entity = EntityTest::load($entity->id());
        $this->assertNull($entity->{$field_name}->value, 'The loaded entity field value is NULL.');
    }
    
    /**
     * Tests reading back a field definition.
     */
    public function testReadField() {
        FieldConfig::create($this->fieldDefinition)
            ->save();
        // Read the field back.
        $field = FieldConfig::load('entity_test.' . $this->fieldDefinition['bundle'] . '.' . $this->fieldDefinition['field_name']);
        $this->assertSame($this->fieldDefinition['field_name'], $field->getName(), 'The field was properly read.');
        $this->assertSame($this->fieldDefinition['entity_type'], $field->getTargetEntityTypeId(), 'The field was properly read.');
        $this->assertSame($this->fieldDefinition['bundle'], $field->getTargetBundle(), 'The field was properly read.');
    }
    
    /**
     * Tests the update of a field.
     */
    public function testUpdateField() {
        FieldConfig::create($this->fieldDefinition)
            ->save();
        // Check that basic changes are saved.
        $field = FieldConfig::load('entity_test.' . $this->fieldDefinition['bundle'] . '.' . $this->fieldDefinition['field_name']);
        $field->setRequired(!$field->isRequired());
        $field->setLabel($this->randomMachineName());
        $field->set('description', $this->randomMachineName());
        $field->setSetting('test_field_setting', $this->randomMachineName());
        $field->save();
        $field_new = FieldConfig::load('entity_test.' . $this->fieldDefinition['bundle'] . '.' . $this->fieldDefinition['field_name']);
        $this->assertEquals($field->isRequired(), $field_new->isRequired(), '"required" change is saved');
        $this->assertEquals($field->getLabel(), $field_new->getLabel(), '"label" change is saved');
        $this->assertEquals($field->getDescription(), $field_new->getDescription(), '"description" change is saved');
        // TODO: test failures.
    }
    
    /**
     * Tests the deletion of a field with no data.
     */
    public function testDeleteFieldNoData() {
        // Deleting and purging fields with data is tested in
        // \Drupal\Tests\field\Kernel\BulkDeleteTest.
        // Create two fields for the same field storage so we can test that only one
        // is deleted.
        FieldConfig::create($this->fieldDefinition)
            ->save();
        $another_field_definition = $this->fieldDefinition;
        $another_field_definition['bundle'] .= '_another_bundle';
        entity_test_create_bundle($another_field_definition['bundle']);
        FieldConfig::create($another_field_definition)->save();
        // Test that the first field is not deleted, and then delete it.
        $field = current(\Drupal::entityTypeManager()->getStorage('field_config')
            ->loadByProperties([
            'entity_type' => 'entity_test',
            'field_name' => $this->fieldDefinition['field_name'],
            'bundle' => $this->fieldDefinition['bundle'],
            'include_deleted' => TRUE,
        ]));
        $this->assertFalse($field->isDeleted());
        $field->delete();
        // Make sure the field was deleted without being marked for purging as there
        // was no data.
        $fields = \Drupal::entityTypeManager()->getStorage('field_config')
            ->loadByProperties([
            'entity_type' => 'entity_test',
            'field_name' => $this->fieldDefinition['field_name'],
            'bundle' => $this->fieldDefinition['bundle'],
            'include_deleted' => TRUE,
        ]);
        $this->assertCount(0, $fields, 'A deleted field is marked for deletion.');
        // Try to load the field normally and make sure it does not show up.
        $field = FieldConfig::load('entity_test.' . '.' . $this->fieldDefinition['bundle'] . '.' . $this->fieldDefinition['field_name']);
        $this->assertTrue(empty($field), 'Field was deleted');
        // Make sure the other field is not deleted.
        $another_field = FieldConfig::load('entity_test.' . $another_field_definition['bundle'] . '.' . $another_field_definition['field_name']);
        $this->assertFalse($another_field->isDeleted());
    }
    
    /**
     * Tests the cross deletion behavior between field storages and fields.
     */
    public function testDeleteFieldCrossDeletion() {
        $field_definition_2 = $this->fieldDefinition;
        $field_definition_2['bundle'] .= '_another_bundle';
        entity_test_create_bundle($field_definition_2['bundle']);
        // Check that deletion of a field storage deletes its fields.
        $field_storage = $this->fieldStorage;
        FieldConfig::create($this->fieldDefinition)
            ->save();
        FieldConfig::create($field_definition_2)->save();
        $field_storage->delete();
        $this->assertNull(FieldConfig::loadByName('entity_test', $this->fieldDefinition['bundle'], $field_storage->getName()));
        $this->assertNull(FieldConfig::loadByName('entity_test', $field_definition_2['bundle'], $field_storage->getName()));
        // Check that deletion of the last field deletes the storage.
        $field_storage = FieldStorageConfig::create($this->fieldStorageDefinition);
        $field_storage->save();
        $field = FieldConfig::create($this->fieldDefinition);
        $field->save();
        $field_2 = FieldConfig::create($field_definition_2);
        $field_2->save();
        $field->delete();
        $this->assertNotEmpty(FieldStorageConfig::loadByName('entity_test', $field_storage->getName()));
        $field_2->delete();
        $this->assertNull(FieldStorageConfig::loadByName('entity_test', $field_storage->getName()));
        // Check that deletion of all fields using a storage simultaneously deletes
        // the storage.
        $field_storage = FieldStorageConfig::create($this->fieldStorageDefinition);
        $field_storage->save();
        $field = FieldConfig::create($this->fieldDefinition);
        $field->save();
        $field_2 = FieldConfig::create($field_definition_2);
        $field_2->save();
        $this->container
            ->get('entity_type.manager')
            ->getStorage('field_config')
            ->delete([
            $field,
            $field_2,
        ]);
        $this->assertNull(FieldStorageConfig::loadByName('entity_test', $field_storage->getName()));
    }

}