public function testSetOwner()
{
$user_id = 'user_id';
$this->workflows->expects($this->once())->method('create')->with($this->equalTo('promote_site_user_to_owner'), $this->equalTo(['params' => compact('user_id')]))->willReturn($this->workflow);
$workflow = $this->model->setOwner($user_id);
$this->assertEquals($workflow, $this->workflow);
}