public function testSeekPosition()
{
$doc = new XmlCompactDocument();
$doc->load(self::samplesDir() . 'custom/runtime/itemsubset.xml');
$seeker = new AssessmentTestSeeker($doc->getDocumentComponent(), array('assessmentItemRef', 'assessmentSection'));
$this->assertEquals(1, $seeker->seekPosition($doc->getDocumentComponent()->getComponentByIdentifier('Q02')));
$this->assertEquals(0, $seeker->seekPosition($doc->getDocumentComponent()->getComponentByIdentifier('Q01')));
$this->assertEquals(0, $seeker->seekPosition($doc->getDocumentComponent()->getComponentByIdentifier('S01')));
$this->assertEquals(2, $seeker->seekPosition($doc->getDocumentComponent()->getComponentByIdentifier('S03')));
$this->assertEquals(2, $seeker->seekPosition($doc->getDocumentComponent()->getComponentByIdentifier('Q03')));
$this->assertEquals(1, $seeker->seekPosition($doc->getDocumentComponent()->getComponentByIdentifier('S02')));
try {
$pos = $seeker->seekPosition(new AssessmentItemRef('Q05', 'Q05.xml'));
$this->assertFalse(true, "Nothing should be found for Q05.");
} catch (OutOfBoundsException $e) {
$this->assertTrue(true);
}
try {
$pos = $seeker->seekPosition(new Correct('Q01.SCORE'));
$this->assertFalse(true, "The 'correct' QTI class is not registered with the AssessmentTestSeeker object.");
} catch (OutOfBoundsException $e) {
$this->assertTrue(true);
}
}
/**
* Create a new BinaryAssessmentTestSeeker object.
*
* @param \qtism\data\AssessmentTest $test
*/
public function __construct(AssessmentTest $test)
{
$classes = array('assessmentItemRef', 'assessmentSection', 'testPart', 'outcomeDeclaration', 'responseDeclaration', 'templateDeclaration', 'branchRule', 'preCondition', 'itemSessionControl');
parent::__construct($test, $classes);
}
/**
* Write a PendingResponses object in the current binary stream.
*
* @param AssessmentTestSeeker $seeker An AssessmentTestSeeker object from where positions in the assessmentTest tree will be pulled out.
* @param PendingResponses $pendingResponses The read PendingResponses object.
* @throws QtiBinaryStreamAccessException
*/
public function writePendingResponses(AssessmentTestSeeker $seeker, PendingResponses $pendingResponses)
{
try {
$state = $pendingResponses->getState();
$itemRef = $pendingResponses->getAssessmentItemRef();
$occurence = $pendingResponses->getOccurence();
// Write the state.
$responseDeclarations = $itemRef->getResponseDeclarations();
$varCount = count($state);
$this->writeTinyInt($varCount);
foreach ($state as $responseVariable) {
$respId = $responseVariable->getIdentifier();
if (isset($responseDeclarations[$respId]) === true) {
$this->writeShort($seeker->seekPosition($responseDeclarations[$respId]));
$this->writeVariableValue($responseVariable);
} else {
$msg = "No response variable with identifier '{$respId}' found in related assessmentItemRef.";
throw new QtiBinaryStreamAccessException($msg, $this, QtiBinaryStreamAccessException::PENDING_RESPONSES);
}
}
// Write the assessmentItemRef.
$this->writeShort($seeker->seekPosition($itemRef));
// Write the occurence number.
$this->writeTinyInt($occurence);
} catch (BinaryStreamAccessException $e) {
$msg = "An error occured while reading some pending responses.";
throw new QtiBinaryStreamAccessException($msg, $this, QtiBinaryStreamAccessException::PENDING_RESPONSES, $e);
} catch (OutOfBoundsException $e) {
$msg = "A QTI component position could not be found in the assessmentTest tree structure.";
throw new QtiBinaryStreamAccessException($msg, $this, QtiBinaryStreamAccessException::PENDING_RESPONSES, $e);
}
}