/**
* @test
*/
public function shouldSortElements()
{
//given
$array = array(4, 1, 3, 2);
//when
$result = FluentArray::from($array)->sort(Comparator::natural())->toArray();
//then
$this->assertEquals(array(1, 2, 3, 4), $result);
}
/**
* @test
*/
public function shouldSortArrayByDefaultExtractor()
{
//given
$array = array(1, 3, 2);
//when
$sorted = Arrays::sort($array, Comparator::natural());
//then
$this->assertEquals(array(1, 2, 3), $sorted);
}
/**
* @test
*/
public function shouldNotUseFinalTieBreakerWhenAnyPriorResolves()
{
//given
$alwaysLess = Functions::constant(-1);
$alwaysGreater = Functions::constant(1);
$alwaysEqual = Functions::constant(0);
$greaterComparator = Comparator::compound($alwaysEqual, $alwaysGreater, $alwaysLess);
$lesserComparator1 = Comparator::compound($alwaysEqual, $alwaysLess, $alwaysGreater);
$lesserComparator2 = Comparator::compound($alwaysLess, $alwaysEqual, $alwaysEqual);
//when
$greater = $greaterComparator(null, null);
$lesser1 = $lesserComparator1(null, null);
$lesser2 = $lesserComparator2(null, null);
//then
$this->assertEquals(-1, $lesser1);
$this->assertEquals(1, $greater);
$this->assertEquals(-1, $lesser2);
}