public function __invoke($middleware, $subject, $err, $next)
{
if (!is_callable($middleware)) {
throw new InvalidArgumentException('$middleware must be callable');
}
if (!is_callable($next)) {
throw new InvalidArgumentException('$next must be callable');
}
$hasError = null !== $err;
$isErrorHandler = ErrorHandlerUtility::isErrorHandler($middleware);
try {
if ($hasError && $isErrorHandler) {
return call_user_func($middleware, $err, $subject, $next);
}
if (!$hasError && !$isErrorHandler) {
return call_user_func($middleware, $subject, $next);
}
} catch (Exception $e) {
$err = $e;
}
return $next($subject, $err);
}
/**
* @dataProvider getMiddlewares
*/
public function testIsErrorHandlerReturnsBoolean($test, $result)
{
$this->assertEquals($result, ErrorHandlerUtility::isErrorHandler($test));
}