/**
* Test findOne.
*/
public function testFindOne()
{
$this->given($emptyDataSource = $this->emptyDataSource())->when($findResult = $emptyDataSource->findOne())->then->variable($findResult)->isNull();
$this->given($randomDataSource = $this->randomDataSource())->when($findResult = $randomDataSource->findOne())->then->variable($findResult)->isNotNull();
$this->given($datasource = $this->randomDataSource(Criteria::method('value')->gt(2), null, 1, 3))->when($findResult = $datasource->findOne())->then->integer($findResult->value())->isGreaterThan(2);
$this->given($comparator = new Comparator(), $sortCriteria = new CallbackComparator(function ($a, $b) use($comparator) {
return -1 * $comparator->compare($a, $b);
}), $datasource = $this->randomDataSource(Criteria::method('value')->lt(10), $sortCriteria))->when($findResult = $datasource->findOne())->then->integer($findResult->value())->isEqualTo(9);
}
/**
* {@inheritdoc}
*/
public function sort(ComparatorInterface $criteria = null)
{
$elements = $this->collection->toArray();
if ($criteria === null) {
$criteria = new Comparator();
}
usort($elements, function ($a, $b) use($criteria) {
return $criteria->compare($a, $b);
});
$this->clear();
foreach ($elements as $element) {
$this->add($element);
}
}
/**
* {@inheritdoc}
*/
public function sort(ComparatorInterface $criteria = null)
{
if ($criteria === null) {
$criteria = new Comparator();
}
uksort($this->elements, function ($a, $b) use($criteria) {
return $criteria->compare($a, $b);
});
}
/**
* {@inheritdoc}
*/
public function compare($a, $b)
{
return $this->direction()->value() * parent::compare($this->selector->__invoke($a), $this->selector->__invoke($b));
}
