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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 function strlen;
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use function strpos;
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use PHPUnit\Framework\InvalidArgumentException;
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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 StringStartsWith extends Constraint
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{
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    /**
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     * @var string
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     */
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    private $prefix;
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    public function __construct(string $prefix)
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    {
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        if (strlen($prefix) === 0) {
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            throw InvalidArgumentException::create(1, 'non-empty string');
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        }
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        $this->prefix = $prefix;
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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 'starts with "' . $this->prefix . '"';
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    }
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    /**
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     * Evaluates the constraint for parameter $other. Returns true if the
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     * constraint is met, false otherwise.
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     *
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     * @param mixed $other value or object to evaluate
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     */
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    protected function matches($other): bool
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    {
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        return strpos((string) $other, $this->prefix) === 0;
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    }
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}