/**
* Adds a node object to graph given value and neighbors
* @param string $value
* @param array $neighbors
*/
protected function populateRowItem($value, array $neighbors)
{
KeyPress::validateInput($neighbors);
// add node to graph, patten: key: ascii value of character, value: node object.
$this->nodes[ord($value)] = $neighbors;
}
/**
* @expectedException InvalidArgumentException
* @expectedExceptionMessage 1 is not a valid KeyPress direction.
*/
public function testValidateInputWithInvalidKey()
{
$neighbors = array('1', '2', '3', '4');
KeyPress::validateInput($neighbors);
}
