public function testFilter()
{
// from js
$evens = __u::filter(array(1, 2, 3, 4, 5, 6), function ($num) {
return $num % 2 === 0;
});
$this->assertEquals(array(2, 4, 6), $evens, 'selected each even number');
// extra
$odds = __u(array(1, 2, 3, 4, 5, 6))->filter(function ($num) {
return $num % 2 !== 0;
});
$this->assertEquals(array(1, 3, 5), $odds, 'works with OO-style calls');
$evens = __u::filter(array(1, 2, 3, 4, 5, 6), function ($num) {
return $num % 2 === 0;
});
$this->assertEquals(array(2, 4, 6), $evens, 'aliased as filter');
$iterator = function ($num) {
return $num % 2 !== 0;
};
$this->assertEquals(__u::filter(array(1, 3, 5), $iterator), __u::select(array(1, 3, 5), $iterator), 'alias works');
// docs
$this->assertEquals(array(2, 4), __u::filter(array(1, 2, 3, 4), function ($num) {
return $num % 2 === 0;
}));
}