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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\Constraint;
use function class_exists;
use function interface_exists;
use function sprintf;
use PHPUnit\Framework\UnknownClassOrInterfaceException;
/**
* @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
*/
final class IsInstanceOf extends Constraint
{
/**
* @psalm-var class-string
*/
private readonly string $name;
/**
* @psalm-var 'class'|'interface'
*/
private readonly string $type;
/**
* @throws UnknownClassOrInterfaceException
*/
public function __construct(string $name)
{
if (class_exists($name)) {
$this->type = 'class';
} elseif (interface_exists($name)) {
$this->type = 'interface';
} else {
throw new UnknownClassOrInterfaceException($name);
}
$this->name = $name;
}
/**
* Returns a string representation of the constraint.
*/
public function toString(): string
{
return sprintf(
'is an instance of %s %s',
$this->type,
$this->name,
);
}
/**
* Evaluates the constraint for parameter $other. Returns true if the
* constraint is met, false otherwise.
*/
protected function matches(mixed $other): bool
{
return $other instanceof $this->name;
}
/**
* Returns the description of the failure.
*
* The beginning of failure messages is "Failed asserting that" in most
* cases. This method should return the second part of that sentence.
*/
protected function failureDescription(mixed $other): string
{
return $this->valueToTypeStringFragment($other) . $this->toString(true);
}
}