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<?php declare(strict_types=1);
/*
* This file is part of PHPUnit.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace PHPUnit\Framework;
use function assert;
use function count;
use RecursiveIterator;
/**
* @template-implements RecursiveIterator<int, Test>
*
* @internal This class is not covered by the backward compatibility promise for PHPUnit
*/
final class TestSuiteIterator implements RecursiveIterator
{
/**
* @var int
*/
private $position = 0;
/**
* @var Test[]
*/
private $tests;
public function __construct(TestSuite $testSuite)
{
$this->tests = $testSuite->tests();
}
public function rewind(): void
{
$this->position = 0;
}
public function valid(): bool
{
return $this->position < count($this->tests);
}
public function key(): int
{
return $this->position;
}
public function current(): Test
{
return $this->tests[$this->position];
}
public function next(): void
{
$this->position++;
}
/**
* @throws NoChildTestSuiteException
*/
public function getChildren(): self
{
if (!$this->hasChildren()) {
throw new NoChildTestSuiteException(
'The current item is not a TestSuite instance and therefore does not have any children.'
);
}
$current = $this->current();
assert($current instanceof TestSuite);
return new self($current);
}
public function hasChildren(): bool
{
return $this->valid() && $this->current() instanceof TestSuite;
}
}
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