public function testNoChildComponents()
{
$baseValue = new BaseValue(BaseType::FLOAT, 10);
$iterator = new QtiComponentIterator($baseValue);
$this->assertFalse($iterator->valid());
$this->assertSame($iterator->current(), null);
// Just try to iterate again, just for fun...
$iterator->next();
$this->assertFalse($iterator->valid());
$this->assertTrue($iterator->current() === null);
}
/**
* Seek for the position of $component in the AssessmentTest tree.
*
* @param QtiComponent $component A QtiComponent object which is supposed to be in the AssessmentTest tree.
* @return integer The position of $component in the AssessmentTest tree.
* @throws OutOfBoundsException If no such $component could be found in the AssessmentTest tree.
*/
public function seekPosition(QtiComponent $component)
{
if (($position = $this->getPositionFromComponentStore($component)) !== false) {
// Already explored.
return $position;
}
// We have to find it!
while ($this->iterator->valid() === true) {
$current = $this->iterator->current();
$newPosition = $this->addToComponentStore($current);
$this->iterator->next();
if ($current === $component) {
return $newPosition;
}
}
$class = $component->getQtiClassName();
$msg = "Unable to find the position of a QtiComponent with QTI class '{$class}'.";
throw new OutOfBoundsException($msg);
}