gistfile1.txt

<?php

 use Rockwood\Entity\User; // add this line
 use Rockwood\Service\UserService;

 class UserServiceTest extends \Codeception\TestCase\Test
 {
    /**
     * @var \UnitTester
     */
     protected $tester;
     protected $controller;

     public function testArray()
     {
        $userService = new UserService();
         
         $data = array(
            'id' => 1,
            'email' => 'a@b.com',
            'password' => 'whatever',
            'username' => 'nitin',
             // put the other fields in here too
         );

        $user = $userService->createFromArray($data);
        $this->assertInstanceOf(User::class, $user); //add this line 
        $user->setEmail($data['email']);
        $this->assertEquals('a@b.com', $user->getEmail());
        $user->setPassword($data['password']);
        $this->assertEquals('whatever', $user->getPassword());
        $user->setId($data['id']);
        $this->assertEquals('1', $user->getId());
        $user->setUsername($data['username']);
        $this->assertEquals('nitin', $user->getUsername());
        // check the other fields too
    }
}


<?php

namespace Rockwood\Service;
use Rockwood\Entity\User;


class UserService
{
	
	public function createFromArray(array $data){
		return new User();
	}
	
	public function toArray(User $user){
		
	}

}