/**
* traverse a list held in an array
*
* @param array $list
* the list to walk
* @param string $listName
* what is the name of $list in the calling code?
* @param callable $callable
* what are we calling
* @return void
*/
public static function using($list, $listName, callable $callable)
{
// robustness!
if (!is_array($list) && !$list instanceof Traversable) {
throw new InvalidArgumentException($listName . ' is not an array');
}
// if we get here, then we're okay to iterate over the list
foreach ($list as $key => $data) {
// make sure we quote the key correctly
$name = $listName . '[' . quote_index($key) . ']';
$callable($data, $key, $name);
}
}
/**
* @covers ::quote_index
*/
public function test_throws_InvalidArgumentException_for_resources()
{
// ----------------------------------------------------------------
// setup your test
$expectedName = STDIN;
// ----------------------------------------------------------------
// perform the change
$actualName = quote_index($expectedName);
// ----------------------------------------------------------------
// test the results
$this->assertEquals($expectedName, $actualName);
}
