public function testValidation()
 {
     $field = new ConfirmedPasswordField('Test', 'Testing', array("_Password" => "abc123", "_ConfirmPassword" => "abc123"));
     $validator = new RequiredFields();
     /** @skipUpgrade */
     $form = new Form($this, 'Form', new FieldList($field), new FieldList(), $validator);
     $this->assertTrue($field->validate($validator), "Validates when both passwords are the same");
     $field->setName("TestNew");
     //try changing name of field
     $this->assertTrue($field->validate($validator), "Validates when field name is changed");
     //non-matching password should make the field invalid
     $field->setValue(array("_Password" => "abc123", "_ConfirmPassword" => "123abc"));
     $this->assertFalse($field->validate($validator), "Does not validate when passwords differ");
 }