public function testIsValueEmpty()
{
$field = new InputField('field1', 'field1');
$this->assertEquals($field->isValueEmpty(), true, 'Null value');
$field->setValue('');
$this->assertEquals($field->isValueEmpty(), true, 'Empty string');
$field->setValue('test');
$this->assertEquals($field->isValueEmpty(), false, 'Non-empty string');
}
