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101 lines (88 loc) · 2.16 KB
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<?php declare(strict_types=1);
/*
* This file is part of PHPUnit.
*
* (c) Sebastian Bergmann <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace PHPUnit\Framework;
use RecursiveIterator;
/**
* @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();
}
/**
* Rewinds the Iterator to the first element.
*/
public function rewind(): void
{
$this->position = 0;
}
/**
* Checks if there is a current element after calls to rewind() or next().
*/
public function valid(): bool
{
return $this->position < \count($this->tests);
}
/**
* Returns the key of the current element.
*/
public function key(): int
{
return $this->position;
}
/**
* Returns the current element.
*/
public function current(): ?Test
{
return $this->valid() ? $this->tests[$this->position] : null;
}
/**
* Moves forward to next element.
*/
public function next(): void
{
$this->position++;
}
/**
* Returns the sub iterator for the current element.
*
* @throws \UnexpectedValueException if the current element is no TestSuite
*/
public function getChildren(): self
{
if (!$this->hasChildren()) {
throw new UnexpectedValueException(
'The current item is no TestSuite instance and hence cannot have any children.',
1567849414
);
}
/** @var TestSuite $current */
$current = $this->current();
return new self($current);
}
/**
* Checks whether the current element has children.
*/
public function hasChildren(): bool
{
return $this->current() instanceof TestSuite;
}
}