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<?php
/**
* A binary safe string comparison.
*
* @author Chris Corbyn
*/
class IdenticalBinaryConstraint extends \PHPUnit\Framework\Constraint\Constraint
{
protected $value;
public function __construct($value)
{
$this->value = $value;
}
/**
* Evaluates the constraint for parameter $other. Returns TRUE if the
* constraint is met, FALSE otherwise.
*
* @param mixed $other Value or object to evaluate.
*
* @return bool
*/
public function matches($other)
{
$aHex = $this->asHexString($this->value);
$bHex = $this->asHexString($other);
return $aHex === $bHex;
}
/**
* Returns a string representation of the constraint.
*
* @return string
*/
public function toString()
{
return 'identical binary';
}
/**
* Get the given string of bytes as a stirng of Hexadecimal sequences.
*
* @param string $binary
*
* @return string
*/
private function asHexString($binary)
{
$hex = '';
$bytes = unpack('H*', $binary);
foreach ($bytes as &$byte) {
$byte = strtoupper($byte);
}
return implode('', $bytes);
}
}