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<?php
/*
* 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\Constraint;
use PHPUnit\Framework\ExpectationFailedException;
/**
* Constraint that asserts that the Traversable it is applied to contains
* only values of a given type.
*/
class TraversableContainsOnly extends Constraint
{
/**
* @var Constraint
*/
protected $constraint;
/**
* @var string
*/
protected $type;
/**
* @param string $type
* @param bool $isNativeType
*/
public function __construct($type, $isNativeType = true)
{
parent::__construct();
if ($isNativeType) {
$this->constraint = new IsType($type);
} else {
$this->constraint = new IsInstanceOf(
$type
);
}
$this->type = $type;
}
/**
* Evaluates the constraint for parameter $other
*
* If $returnResult is set to false (the default), an exception is thrown
* in case of a failure. null is returned otherwise.
*
* If $returnResult is true, the result of the evaluation is returned as
* a boolean value instead: true in case of success, false in case of a
* failure.
*
* @param mixed $other Value or object to evaluate.
* @param string $description Additional information about the test
* @param bool $returnResult Whether to return a result or throw an exception
*
* @return mixed
*
* @throws ExpectationFailedException
*/
public function evaluate($other, $description = '', $returnResult = false)
{
$success = true;
foreach ($other as $item) {
if (!$this->constraint->evaluate($item, '', true)) {
$success = false;
break;
}
}
if ($returnResult) {
return $success;
}
if (!$success) {
$this->fail($other, $description);
}
}
/**
* Returns a string representation of the constraint.
*
* @return string
*/
public function toString()
{
return 'contains only values of type "' . $this->type . '"';
}
}