public function testGetChildrenIds()
{
//prepare mocks and data
$parentId = 100;
$typeId = 4;
$bind = [':product_id' => $parentId, ':link_type_id' => $typeId];
$fetchedData = [['linked_product_id' => 100], ['linked_product_id' => 500]];
$result = [$typeId => [100 => 100, 500 => 500]];
// method flow
$this->prepareReadAdapter();
$this->dbSelect->expects($this->once())->method('from')->will($this->returnValue($this->dbSelect));
$this->dbSelect->expects($this->atLeastOnce())->method('where')->will($this->returnValue($this->dbSelect));
$this->readAdapter->expects($this->once())->method('fetchAll')->with($this->dbSelect, $bind)->will($this->returnValue($fetchedData));
$this->assertEquals($result, $this->model->getChildrenIds($parentId, $typeId));
}
