public function testGetAssignmentsByRole()
{
$this->prepareData();
$reader = $this->auth->getRole('reader');
$this->auth->assign($reader, 123);
$this->auth = $this->createManager();
$this->assertEquals([], $this->auth->getUserIdsByRole('nonexisting'));
$this->assertEquals(['reader A', '123'], $this->auth->getUserIdsByRole('reader'));
$this->assertEquals(['author B'], $this->auth->getUserIdsByRole('author'));
$this->assertEquals(['admin C'], $this->auth->getUserIdsByRole('admin'));
}