<?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 PHPUnit\Framework\ExpectationFailedException;
use SebastianBergmann\Comparator\ComparisonFailure;
/**
* Constraint that asserts that the array it is evaluated for has a specified subset.
*
* Uses array_replace_recursive() to check if a key value subset is part of the
* subject array.
*/
class ArraySubset extends Constraint
{
/**
* @var array|\Traversable
*/
protected $subset;
/**
* @var bool
*/
protected $strict;
/**
* @param array|\Traversable $subset
* @param bool $strict Check for object identity
*/
public function __construct($subset, $strict = false)
{
parent::__construct();
$this->strict = $strict;
$this->subset = $subset;
}
/**
* Evaluates the constraint for parameter $other
*
* If $returnResult is set to false (the default), an exception is thrown
* in case of a failure. null is returned otherwise.
*
* If $returnResult is true, the result of the evaluation is returned as
* a boolean value instead: true in case of success, false in case of a
* failure.
*
* @param mixed $other Value or object to evaluate.
* @param string $description Additional information about the test
* @param bool $returnResult Whether to return a result or throw an exception
*
* @return mixed
*
* @throws ExpectationFailedException
*/
public function evaluate($other, $description = '', $returnResult = false)
{
//type cast $other & $this->subset as an array to allow
//support in standard array functions.
$other = $this->toArray($other);
$this->subset = $this->toArray($this->subset);
$patched = \array_replace_recursive($other, $this->subset);
if ($this->strict) {
$result = $other === $patched;
} else {
$result = $other == $patched;
}
if ($returnResult) {
return $result;
}
if (!$result) {
$f = new ComparisonFailure(
$patched,
$other,
\var_export($patched, true),
\var_export($other, true)
);
$this->fail($other, $description, $f);
}
}
/**
* Returns a string representation of the constraint.
*
* @return string
*/
public function toString()
{
return 'has the subset ' . $this->exporter->export($this->subset);
}
/**
* 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 $other Evaluated value or object.
*
* @return string
*/
protected function failureDescription($other)
{
return 'an array ' . $this->toString();
}
/**
* @param array|\Traversable $other
*
* @return array
*/
private function toArray($other)
{
if (\is_array($other)) {
return $other;
}
if ($other instanceof \ArrayObject) {
return $other->getArrayCopy();
}
if ($other instanceof \Traversable) {
return \iterator_to_array($other);
}
// Keep BC even if we know that array would not be the expected one
return (array) $other;
}
}