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<?php
namespace Hamcrest;
/*
Copyright (c) 2012 hamcrest.org
*/
/**
* Contains utility methods for handling Hamcrest matchers.
*
* @see Hamcrest\Matcher
*/
class Util
{
/**
* Wraps the item with an IsEqual matcher if it isn't a matcher already.
*
* @param mixed $item matcher or any value
* @return \Hamcrest\Matcher
*/
public static function wrapValueWithIsEqual($item)
{
return ($item instanceof Matcher)
? $item
: Core\IsEqual::equalTo($item)
;
}
/**
* Throws an exception if any item in $matchers is not a Hamcrest\Matcher.
*
* @param array $matchers expected to contain only matchers
* @throws \InvalidArgumentException if any item is not a matcher
*/
public static function checkAllAreMatchers(array $matchers)
{
foreach ($matchers as $m) {
if (!($m instanceof Matcher)) {
throw new \InvalidArgumentException(
'Each argument or element must be a Hamcrest matcher'
);
}
}
}
/**
* Returns a copy of $items where each non-Matcher item is replaced by
* a Hamcrest\Core\IsEqual matcher for the item. If the first and only item
* is an array, it is used as the $items array to support the old style
* of passing an array as the sole argument to a matcher.
*
* @param array $items contains items and matchers
* @return array<Matchers> all items are
*/
public static function createMatcherArray(array $items)
{
//Extract single array item
if (count($items) == 1 && is_array($items[0])) {
$items = $items[0];
}
//Replace non-matchers
foreach ($items as &$item) {
if (!($item instanceof Matcher)) {
$item = Core\IsEqual::equalTo($item);
}
}
return $items;
}
}