Semantical Error happens when using Behat only

Question

Hello StackOverflow community, I just joined the community and this is my first question :)

I'm using Symfony2. When I access a page manually using my browser (firefox):

http://localhost:8000/vendor/add-product

The page renders fine and I see a form which will allow a user to add a product to his store.

But when I use Behat for my tests, I get this error:

[Semantical Error] The annotation "@Symfony\Component\Validator\Constraints\GreaterThanOrEqual" in property AppBundle\Entity\Product::$productPrice does not exist, or could not be auto-loaded.

This is (a part of) the source code in question:

namespace AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;

/**
* @ORM\Entity
* @ORM\Table(name="app_products")
*/
class Product
{
    /**
    * @ORM\Id
    * @ORM\Column(type="integer")
    * @ORM\GeneratedValue(strategy="AUTO")
    */
    private $productId;

    /**
    * @ORM\Column(type="integer")
    * @ORM\ManyToOne(targetEntity="AppBundle\Entity\Store")
    */
    private $storeId;

    /**
    * @ORM\Column(type="string", length=255)
    * @Assert\NotBlank(message="This is important, Product Name should not be blank!")
    * @Assert\Length(max = "255", maxMessage="Your description must not exceed 255 characters.")
    */
    private $productName;

    /**
    * @ORM\Column(type="integer", length=255)
    * @Assert\GreaterThanOrEqual(value=0)
    * @Assert\NotBlank(message="Product Price should not be blank!")
    */
    private $productPrice;

    /**
    * @ORM\Column(type="string", length=255)
    * @Assert\NotBlank(message="Please enter a product description.")
    * @Assert\Length(max = "255", maxMessage="Your description must not exceed 255 characters.")
    */
    private $productDescription;

    /**
    * @ORM\Column(type="integer")
    * @Assert\GreaterThanOrEqual(value=0)
    * @Assert\NotBlank(message="Product Quantity should not be blank!")
    */
    private $productQuantity;

    /**
    * @ORM\Column(type="string", length=255)
    * @Assert\File(mimeTypes={ "image/jpeg" })
    * @Assert\File(maxSize="6000000")
    */
    private $productImage;
    ...

And this is my feature:

Feature: Buying products
As a customer,
I want to view and select products before buying,
So that I could have more value for my money

Background:
    Given I am on the homepage
    When I fill in "username" with "24thsaint"
    And I fill in "password" with "123123"
    And I press "login-button"

Scenario: Vendor wants to add a new product
    Given I am on the homepage
    When I follow "My Store" ###### The test stops here as I get the Semantical Error
    And I follow "add-new-product"

Please help, I really think everything is in place. It's just that the error occurs during testing with Behat. What could have gone wrong?

---

Edit:

I did the suggestions of sir Evgeniy Kuzmin by clearing the cache. I ran,

php bin/console cache:clear --env=test

The tests that pass before fail now with this error:

[Semantical Error] The annotation "@Doctrine\ORM\Mapping\Entity" in 
class AppBundle\Entity\User does not exist, or could not be auto-loaded. 

Please help me.

Answer 1

Ohmygod... After xx weeks of painfully traversing the internet for solutions, the problem of this error rooted from a misconfiguration in:

vendor/autoload.php

When I ran the command:

php composer.phar update

It overwrote my vendor/autoload.php to this:

<?php
autoload.php @generated by Composer

require_once __DIR__ . '/composer' . '/autoload_real.php';

return ComposerAutoloaderInit130fb5116714b6c2da66a4b026258e89::getLoader();
?>

Whereas it should be this to get those annotations working and to get rid of that error:

<?php

use Doctrine\Common\Annotations\AnnotationRegistry;

require_once dirname( __DIR__ ).'/vendor/composer/autoload_real.php';

$loader = ComposerAutoloaderInit130fb5116714b6c2da66a4b026258e89::getLoader();

AnnotationRegistry::registerFile( dirname( __DIR__ ).'/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/Driver/DoctrineAnnotations.php' );
AnnotationRegistry::registerLoader([$loader, 'loadClass']);

return $loader;

Note the inclusion of the AnnotationRegistry.

---

This line:

AnnotationRegistry::registerFile( dirname( __DIR__ ).'/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/Driver/DoctrineAnnotations.php' );

Eliminates this error:

[Semantical Error] The annotation "@Doctrine\ORM\Mapping\Entity" in class AppBundle\Entity\User does not exist, or could not be auto-loaded. 

The tests worked fine after this. However, I was using validations and this error:

[Semantical Error] The annotation "@Symfony\Component\Validator\Constraints\GreaterThanOrEqual" in property AppBundle\Entity\Product::$productPrice does not exist, or could not be auto-loaded.

Was solved by adding this line:

AnnotationRegistry::registerLoader([$loader, 'loadClass']);