public function testMessagesInsideNestedCompositeFields()
{
$fieldGroup = new FieldGroup(new CompositeField($textField = new TextField('TestField', 'Test Field'), $emailField = new EmailField('TestEmailField', 'Test Email Field')));
$textField->setError('Test error message', 'warning');
$emailField->setError('Test error message', 'error');
$this->assertEquals('Test error message, Test error message.', $fieldGroup->Message());
$this->assertEquals('warning. error', $fieldGroup->MessageType());
}