update the test.php

test.php

@@ -6,4 +6,8 @@ function task($a, $b)
 	echo $b . PHP_EOL;
 }
 
-Study\Coroutine::create('task', 'a', 'b');
\ No newline at end of file
+Study\Coroutine::create('task', 'a', 'b');
+Study\Coroutine::create(function ($a, $b) {
+	echo $a . PHP_EOL;
+	echo $b . PHP_EOL;
+}, 'a', 'b');