PHPUnit - Mock _get() on an Abstract Class

PHPUnitMockMagicGet

class TestMyObjectLoader extends PHPUnit_Framework_TestCase
{
    protected $mockObject;
    
    
    public function setUp()
    {
        $this->mockObject = $this->getMockForAbstractClass('Project\MyObject', [], '', true, true, true, ['initialize', '__get']);
    }
    
    
    public function testSomething()
    {
        $expectedData = [
            'myProperty' => 'test',
            'anotherProperty' => ['in' => true]
        ];
    
        $callback = function ($name) use ($expectedData) {
            switch ($name) {
                case 'myProperty':
                    $return = $expectedData['myProperty'];
                    break;
                case 'anotherProperty':
                    $return = $expectedData['anotherProperty'];
                    break;
                default:
                    $return = null;
            }
    
            if (is_null($return)) {
                throw new Exception("Property $name is not defined.");
            }
    
            return $return;
        };

        $this->mockObject->expects($this->once())
             ->method('__get')
             ->will($this->returnCallback($callback));
            
        $this->assertEquals($expectedData['myProperty'], $this->mockObject->myProperty);
    }
}