public function testSortMapMap()
{
$data = [['4354', '54', '52'], ['45675', '435', '234223'], ['4354', '54']];
$node = _Array::sort(_Comparator::boolean()->map(MathNode::sum())->map(_Filter::isEven()));
$this->assertEquals([['45675', '435', '234223'], ['4354', '54', '52'], ['4354', '54']], $node($data));
}
/**
* @return IsEvenFilter
*/
public function testIsEven()
{
$isEven = _Filter::isEven();
$this->assertInstanceOf(IsEvenFilter::class, $isEven);
$this->assertFalse($isEven(3));
$this->assertFalse($isEven([]));
$this->assertTrue($isEven(2.0));
$this->assertFalse($isEven(1.2));
$this->assertFalse($isEven("a"));
$this->assertFalse($isEven("b"));
$this->assertTrue($isEven("10"));
return $isEven;
}
