public function testIsFinishedFunctionality()
{
$op1 = new GenericOperation(1);
$op2 = new GenericOperation(2);
$dm = new DependencyManager();
$dm->addOperation($op1);
$dm->addOperation($op2);
$dm->addDependencyByOperation($op1, $op2);
$this->assertFalse($dm->isFinished());
$dm->markAsExecuted($op1);
$this->assertFalse($dm->isFinished());
$dm->markAsExecuted($op2);
$this->assertTrue($dm->isFinished());
}