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<?php declare(strict_types=1);
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/*
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 * This file is part of PHPUnit.
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 *
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 * (c) Sebastian Bergmann <sebastian@phpunit.de>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace PHPUnit\Framework\Constraint;
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use PHPUnit\Framework\ExpectationFailedException;
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use Traversable;
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/**
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 * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
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 */
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final class TraversableContainsOnly extends Constraint
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{
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    /**
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     * @var Constraint
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     */
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    private $constraint;
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    /**
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     * @var string
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     */
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    private $type;
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    /**
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     * @throws \PHPUnit\Framework\Exception
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     */
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    public function __construct(string $type, bool $isNativeType = true)
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    {
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        if ($isNativeType) {
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            $this->constraint = new IsType($type);
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        } else {
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            $this->constraint = new IsInstanceOf(
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                $type
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            );
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        }
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        $this->type = $type;
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    }
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    /**
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     * Evaluates the constraint for parameter $other.
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     *
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     * If $returnResult is set to false (the default), an exception is thrown
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     * in case of a failure. null is returned otherwise.
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     *
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     * If $returnResult is true, the result of the evaluation is returned as
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     * a boolean value instead: true in case of success, false in case of a
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     * failure.
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     *
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     * @param mixed|Traversable $other
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     *
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     * @throws \SebastianBergmann\RecursionContext\InvalidArgumentException
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     * @throws ExpectationFailedException
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     */
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    public function evaluate($other, string $description = '', bool $returnResult = false): ?bool
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    {
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        $success = true;
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        foreach ($other as $item) {
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            if (!$this->constraint->evaluate($item, '', true)) {
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                $success = false;
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                break;
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            }
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        }
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        if ($returnResult) {
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            return $success;
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        }
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        if (!$success) {
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            $this->fail($other, $description);
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        }
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        return null;
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    }
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    /**
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     * Returns a string representation of the constraint.
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     */
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    public function toString(): string
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    {
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        return 'contains only values of type "' . $this->type . '"';
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    }
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}