public function testNumNeighbords()
{
//arrange
$universe = new Universe(10);
//Act
$universe->buildRandomUniverse();
//Act
$array_universe = $universe->getArrayUniverse();
$num_neighbord = 0;
$num_neighbord += $array_universe[0][1];
$num_neighbord += $array_universe[1][1];
$num_neighbord += $array_universe[1][0];
//assert
$this->assertEquals($num_neighbord, $universe->getNumNeighbors(0, 0));
}
