66 lines
1.5 KiB
PHP
66 lines
1.5 KiB
PHP
<?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.
|
|
*/
|
|
namespace PHPUnit\Framework\Constraint;
|
|
|
|
use Countable;
|
|
|
|
/**
|
|
* Constraint that checks whether a variable is empty().
|
|
*/
|
|
class IsEmpty extends Constraint
|
|
{
|
|
/**
|
|
* Returns a string representation of the constraint.
|
|
*/
|
|
public function toString(): string
|
|
{
|
|
return 'is empty';
|
|
}
|
|
|
|
/**
|
|
* Evaluates the constraint for parameter $other. Returns true if the
|
|
* constraint is met, false otherwise.
|
|
*
|
|
* @param mixed $other value or object to evaluate
|
|
*/
|
|
protected function matches($other): bool
|
|
{
|
|
if ($other instanceof \EmptyIterator) {
|
|
return true;
|
|
}
|
|
|
|
if ($other instanceof Countable) {
|
|
return \count($other) === 0;
|
|
}
|
|
|
|
return empty($other);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @param mixed $other evaluated value or object
|
|
*/
|
|
protected function failureDescription($other): string
|
|
{
|
|
$type = \gettype($other);
|
|
|
|
return \sprintf(
|
|
'%s %s %s',
|
|
$type[0] == 'a' || $type[0] == 'o' ? 'an' : 'a',
|
|
$type,
|
|
$this->toString()
|
|
);
|
|
}
|
|
}
|