/**
*
*/
public function testZiplLongest()
{
$longest = zip_longest(['A', 'B', 'C', 'D'], ['x', 'y']);
$longest->setFillValue('-');
$longest = to_array($longest);
$this->assertSame([['A', 'x'], ['B', 'y'], ['C', '-'], ['D', '-']], $longest);
}
public function testCartesianProductIterable()
{
$product = new ProductIterator(str_split('ABCD'), str_split('xy'));
$dumped = to_array($product);
$this->assertSame([['A', 'x'], ['A', 'y'], ['B', 'x'], ['B', 'y'], ['C', 'x'], ['C', 'y'], ['D', 'x'], ['D', 'y']], $dumped);
$cartesian = new ProductIterator(\range(0, 2));
$cartesian->setRepeat(3);
$dumped = to_array($cartesian);
}
/**
*
*/
public function testCombinationsWithReplacement()
{
$combinations = combinations_with_replacement(['A', 'B', 'C'], 2);
$results = to_array($combinations);
$this->assertSame(6, count($results));
$expected = 'AA AB AC BB BC CC';
$results = array_map(function ($d) {
return join('', $d);
}, $results);
$this->assertSame(preg_split("/[\\s,]+/", $expected), $results);
}
/**
*
*/
public function testMapMoreIterable()
{
$lambda = function (...$args) {
return call_user_func('array_sum', $args);
};
$a = [1, 2, 3, 4];
$b = [17, 12, 11, 10];
$c = [-1, -4, 5, 9];
$twoIterable = map($lambda, $a, $b);
$threeIterable = map($lambda, $a, $b, $c);
$this->assertSame([18, 14, 14, 14], to_array($twoIterable));
$this->assertSame([17, 10, 19, 23], to_array($threeIterable));
}
/**
*
*/
public function testReversedFuncNonReverseable()
{
$array = ['a', 'b', 'c'];
$reverse = reversed($array);
$this->assertSame(['c', 'b', 'a'], to_array($reverse));
}
