/**
* @covers phpDocumentor\Descriptor\FileDescriptor::setClasses
* @covers phpDocumentor\Descriptor\FileDescriptor::getClasses
*/
public function testSetAndGetClasses()
{
$this->assertInstanceOf('phpDocumentor\\Descriptor\\Collection', $this->fixture->getClasses());
$mockInstance = m::mock('phpDocumentor\\Descriptor\\Collection');
$mock = $mockInstance;
$this->fixture->setClasses($mock);
$this->assertSame($mockInstance, $this->fixture->getClasses());
}