function testItDisplaysValuesFromRelations()
 {
     $record = $this->getNewTagFieldTestBlogPost('BlogPost1');
     $record->write();
     $form = new Form(new TagFieldTestController($record), 'Form', new FieldList($field = new TagField('Tags', '', new DataList('TagFieldTestBlogTag'))), new FieldList());
     $form->loadDataFrom($this->objFromFixture('TagFieldTestBlogPost', 'BlogPost2'));
     $this->assertEquals($field->Value(), array(1 => 1, 2 => 2));
 }