add_action not working from internal file of plugin

I have used this on my class but it is not working

add_action('admin_init', array($this, 'funname'));

funname function is not calling.function is public.I have refered this url https://wordpress.stackexchange.com/questions/48085/add-action-reference-a-class but still not solved my problem

CODE:

class Test {
    public static function Create() {
        return  $testObj = new Test();
    }
    public function __construct() {
        add_action('admin_init', array($this, 'funname'));
    }
    public function funname(){
    echo "tes2t";exit;
    }
}
 $ObjTest = Test::Create();

UPDATE:

This code call funname if i put code into theme’s function.php file but not working when put it on plugin file.

UPDATE 2

I have written this line on plugin file directly

add_action( 'admin_init',  'funname'  );
function createAdminFromData(){
    echo "pre";exit;
}

If i put above code on plugins main file it is working but i have main file of plugin and from that one another file is called where add_action is not working..don’t know why?