/**
* We want $eventHandler to be called whenever an event of type $eventName
* is dispatch to the event stream $stream
*
* @param EventStream $stream
* the stream we want to register the event handler on
* @param string $eventName
* the event we want to handle
* @param callable $eventHandler
* the handler we want called
* @return void
*/
public static function on(EventStream $stream, $eventName, $eventHandler)
{
RequireEventName::check($eventName);
RequireCallable::check($eventHandler, E4xx_UnsupportedType::class);
if (!isset($stream->{$eventName})) {
$stream->{$eventName} = [];
}
$stream->{$eventName}[] = $eventHandler;
}
/**
* @covers ::check
* @dataProvider provideNonCallables
* @expectedException GanbaroDigital\Reflection\Exceptions\E4xx_UnsupportedType
*/
public function testRejectsNonNullsWhenCalledStatically($item)
{
// ----------------------------------------------------------------
// setup your test
// ----------------------------------------------------------------
// perform the change
RequireCallable::check($item);
}