Error: Please import Patchwork from a point in your code where no user-defined function, class or trait is yet defined. (BrainMonkey + PHPUnit)

[k00ni]

Problem

Overview:

• Version: 1.4.1
• Using it through BrainMonkey

I have a minimal setup with:

• BrainMonkey
• PHPUnit
• Patchwork

After a start a simple test, i always get the following error:

Please import Patchwork from a point in your code where no user-defined function, 
class or trait is yet defined. composerrequire8af9bf7de4cc77dbd99964afd34dcbac() and 
possibly others currently violate this.
/../vendor/antecedent/patchwork/Patchwork.php:94
/../vendor/antecedent/patchwork/Patchwork.php:96
/../vendor/brain/monkey/src/Monkey.php:44
/../vendor/brain/monkey/src/Monkey.php:60
/../tests/src/PluginsFirst/SerialKeyChecker/Test/UnitTestCase.php:13
/../tests/src/PluginsFirst/SerialKeyChecker/Test/SerialKeyCheckerControllerTest.php:12

When i force Patchwork version to be 1.4.0 in composer.json, everything seems fine.

Local test setup

My test setup is basically the following. I call it using a phpunit.xml and phpunit command.

Unit-Test:

use Brain\Monkey;

class UnitTestCase extends \PHPUnit_Framework_TestCase
{
    protected $fixture;

    public function setUp()
    {
        Monkey::setUpWP();
    }

    public function tearDown()
    {
        Monkey::tearDownWP();
    }
}

Test-Case:

class SerialKeyCheckerControllerTest extends UnitTestCase
{
    public function setUp()
    {
        parent::setUp();
    }

    /*
     * Tests for __construct()
     */

    public function testConstructor()
    {

    }
}

composer.json:

{
    "require-dev": {
        "brain/monkey": "1.*",
        "phpunit/phpunit": "*"
    }
}