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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.
*/
/**
* Constraint that asserts that the value it is evaluated for is of a
* specified type.
*
* The expected value is passed in the constructor.
*
* @since Class available since Release 3.0.0
*/
class PHPUnit_Framework_Constraint_IsType extends PHPUnit_Framework_Constraint
{
const TYPE_ARRAY = 'array';
const TYPE_BOOL = 'bool';
const TYPE_FLOAT = 'float';
const TYPE_INT = 'int';
const TYPE_NULL = 'null';
const TYPE_NUMERIC = 'numeric';
const TYPE_OBJECT = 'object';
const TYPE_RESOURCE = 'resource';
const TYPE_STRING = 'string';
const TYPE_SCALAR = 'scalar';
const TYPE_CALLABLE = 'callable';
/**
* @var array
*/
protected $types = array(
'array' => true,
'boolean' => true,
'bool' => true,
'double' => true,
'float' => true,
'integer' => true,
'int' => true,
'null' => true,
'numeric' => true,
'object' => true,
'real' => true,
'resource' => true,
'string' => true,
'scalar' => true,
'callable' => true
);
/**
* @var string
*/
protected $type;
/**
* @param string $type
*
* @throws PHPUnit_Framework_Exception
*/
public function __construct($type)
{
parent::__construct();
if (!isset($this->types[$type])) {
throw new PHPUnit_Framework_Exception(
sprintf(
'Type specified for PHPUnit_Framework_Constraint_IsType <%s> ' .
'is not a valid type.',
$type
)
);
}
$this->type = $type;
}
/**
* Evaluates the constraint for parameter $other. Returns true if the
* constraint is met, false otherwise.
*
* @param mixed $other Value or object to evaluate.
*
* @return bool
*/
protected function matches($other)
{
switch ($this->type) {
case 'numeric':
return is_numeric($other);
case 'integer':
case 'int':
return is_integer($other);
case 'double':
case 'float':
case 'real':
return is_float($other);
case 'string':
return is_string($other);
case 'boolean':
case 'bool':
return is_bool($other);
case 'null':
return is_null($other);
case 'array':
return is_array($other);
case 'object':
return is_object($other);
case 'resource':
return is_resource($other) || is_string(@get_resource_type($other));
case 'scalar':
return is_scalar($other);
case 'callable':
return is_callable($other);
}
}
/**
* Returns a string representation of the constraint.
*
* @return string
*/
public function toString()
{
return sprintf(
'is of type "%s"',
$this->type
);
}
}