IsArrayWithSize.php
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IsArrayWithSize.php
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	<?php
	namespace Hamcrest\Arrays;

	/*
	Copyright (c) 2009 hamcrest.org
	*/
	use Hamcrest\Core\DescribedAs;
	use Hamcrest\Core\IsNot;
	use Hamcrest\FeatureMatcher;
	use Hamcrest\Matcher;
	use Hamcrest\Util;

	/**
	* Matches if array size satisfies a nested matcher.
	*/
	class IsArrayWithSize extends FeatureMatcher
	{

	public function __construct(Matcher $sizeMatcher)
	{
	parent::__construct(
	self::TYPE_ARRAY,
	null,
	$sizeMatcher,
	'an array with size',
	'array size'
	);
	}

	protected function featureValueOf($array)
	{
	return count($array);
	}

	/**
	* Does array size satisfy a given matcher?
	*
	* @param \Hamcrest\Matcher\|int $size as a {@link Hamcrest\Matcher} or a value.
	*
	* @return \Hamcrest\Arrays\IsArrayWithSize
	* @factory
	*/
	public static function arrayWithSize($size)
	{
	return new self(Util::wrapValueWithIsEqual($size));
	}

	/**
	* Matches an empty array.
	*
	* @factory
	*/
	public static function emptyArray()
	{
	return DescribedAs::describedAs(
	'an empty array',
	self::arrayWithSize(0)
	);
	}

	/**
	* Matches an empty array.
	*
	* @factory
	*/
	public static function nonEmptyArray()
	{
	return DescribedAs::describedAs(
	'a non-empty array',
	self::arrayWithSize(IsNot::not(0))
	);
	}
	}