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<?php
declare(strict_types=1);
namespace LaminasTest\EventManager;
use Laminas\EventManager\Exception\InvalidArgumentException;
use Laminas\EventManager\Filter\FilterIterator;
use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\TestCase;
final class FilterIteratorTest extends TestCase
{
public function testNextReturnsNullOnEmptyChain(): void
{
$filterIterator = new FilterIterator();
self::assertNull($filterIterator->next([]));
}
public function testNextReturnsNullWithEmptyHeap(): void
{
$filterIterator = new FilterIterator();
self::assertNull($filterIterator->next([0, 1, 2]));
}
public function testContainsReturnsFalseForInvalidElement(): void
{
$filterIterator = new FilterIterator();
self::assertFalse($filterIterator->contains('foo'));
}
public function testContainsReturnsTrueForValidElement(): void
{
$callback = function () {
};
$filterIterator = new FilterIterator();
$filterIterator->insert($callback, 1);
self::assertTrue($filterIterator->contains($callback));
}
public function testRemoveFromEmptyQueueReturnsFalse(): void
{
$filterIterator = new FilterIterator();
self::assertFalse($filterIterator->remove('foo'));
}
public function testRemoveUnrecognizedItemFromQueueReturnsFalse(): void
{
$callback = function () {
};
$filterIterator = new FilterIterator();
$filterIterator->insert($callback, 1);
self::assertFalse($filterIterator->remove(clone $callback));
}
public function testRemoveValidItemFromQueueReturnsTrue(): void
{
$callback = function () {
};
$filterIterator = new FilterIterator();
$filterIterator->insert($callback, 1);
self::assertTrue($filterIterator->remove($callback));
}
public function testNextReturnsNullWhenFilterChainIsEmpty(): void
{
$filterIterator = new FilterIterator();
$chain = new FilterIterator();
self::assertNull($filterIterator->next([0, 1, 2], ['foo', 'bar'], $chain));
}
/** @psalm-return array<string, array{0: mixed}> */
public static function invalidFilters(): array
{
return [
'null' => [null],
'true' => [true],
'false' => [false],
'zero' => [0],
'int' => [1],
'zero-float' => [0.0],
'float' => [1.1],
'non-callable-string' => ['not a function'],
'non-callable-array' => [['not a function']],
'non-invokable-object' => [(object) ['__invoke' => 'not a function']],
];
}
/**
* @param mixed $filter
*/
#[DataProvider('invalidFilters')]
public function testInsertShouldRaiseExceptionOnNonCallableDatum($filter)
{
$iterator = new FilterIterator();
$this->expectException(InvalidArgumentException::class);
$this->expectExceptionMessage('callables');
$iterator->insert($filter, 1);
}
}
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