Php psr-4 Class not Found Error using Composer - php

Question

I'm trying to exercise MVC concepts with php on "wamp-server"
At local directory i have the index.php page for basic routing with alto-router package and a routes.php file:
<?php
$router->map('GET','/test', 'Acme\Controllers\PageController#test' ,'test');
composer.json file is:
{
"name": "eren/eren",
"authors": [
{
"name": "Eren Ardahan",
"email": "???#???.com"
}
],
"require": {
"filp/whoops": "^1.1",
"altorouter/altorouter": "1.1.0"
},
"autoload":{
"psr-4":{"Acme\\":"src/"}
}
}
PageController.php is
<?php namespace Acme\Controllers;
use Acme\Testing\Test;
class PageController
{
public function test(){
include(__DIR__ . "/../../views/test.php");
//---Deleted lines
$test = new Test;
$test -> test();
/---
}
}
The Test.php in the acme directory is:
<?php namespace Acme\Testing;
class Test{
public function test(){
echo "Working";
}
}
And The test.php in the view directory is above.And it works when i deleted the commented two lines in PageController.php
<?php
echo "TEST PAGE <br>";
But with this lines there is an error :
Class 'Acme\Testing\Test' not found..

Answer 1

As i said in the comment the problem is that the namespace is not correct.
I created this answer for people who might find this question in the future.
You have a directory called source wich has the namespace Acme. When u add another directory inside the source folder called acme the namespace will be:
Acme\acme
You will have to change the acme folder to Testing to get the right namespace.