public function testAppendRequiredFields()
{
//get the validator
$requiredFields = new RequiredFields('Title', 'Content', 'Image', 'AnotherField');
//create another validator with other fields
$otherRequiredFields = new RequiredFields(array('ExtraField1', 'ExtraField2'));
//append the new fields
$requiredFields->appendRequiredFields($otherRequiredFields);
//check they were added correctly
$this->assertEquals(array('Title', 'Content', 'Image', 'AnotherField', 'ExtraField1', 'ExtraField2'), $requiredFields->getRequired(), "Merging of required fields failed to behave as expected");
// create the standard validator so we can check duplicates are ignored
$otherRequiredFields = new RequiredFields('Title', 'Content', 'Image', 'AnotherField');
//add the new validator
$requiredFields->appendRequiredFields($otherRequiredFields);
//check nothing was changed
$this->assertEquals(array('Title', 'Content', 'Image', 'AnotherField', 'ExtraField1', 'ExtraField2'), $requiredFields->getRequired(), "Merging of required fields with duplicates failed to behave as expected");
//add some new fields and some old ones in a strange order
$otherRequiredFields = new RequiredFields('ExtraField3', 'Title', 'ExtraField4', 'Image', 'Content');
//add the new validator
$requiredFields->appendRequiredFields($otherRequiredFields);
//check that only the new fields were added
$this->assertEquals(array('Title', 'Content', 'Image', 'AnotherField', 'ExtraField1', 'ExtraField2', 'ExtraField3', 'ExtraField4'), $requiredFields->getRequired(), "Merging of required fields with some duplicates in a muddled order failed to behave as expected");
}
