public function testEach()
{
// from js
$test =& $this;
__u::each(array(1, 2, 3), function ($num, $i) use($test) {
$test->assertEquals($num, $i + 1, 'each iterators provide value and iteration count');
});
$answers = array();
$context = (object) array('multiplier' => 5);
__u::each(array(1, 2, 3), function ($num) use(&$answers, $context) {
$answers[] = $num * $context->multiplier;
});
$this->assertEquals(array(5, 10, 15), $answers, 'context object property accessed');
$answers = array();
$obj = (object) array('one' => 1, 'two' => 2, 'three' => 3);
__u::each($obj, function ($value, $key) use(&$answers) {
$answers[] = $key;
});
$this->assertEquals(array('one', 'two', 'three'), $answers, 'iterating over objects works');
$answer = null;
__u::each(array(1, 2, 3), function ($num, $index, $arr) use(&$answer) {
if (__u::includ($arr, $num)) {
$answer = true;
}
});
$this->assertTrue($answer, 'can reference the original collection from inside the iterator');
$answers = 0;
__u::each(null, function () use(&$answers) {
$answers++;
});
$this->assertEquals(0, $answers, 'handles a null property');
// extra
$test =& $this;
__u(array(1, 2, 3))->each(function ($num, $i) use($test) {
$test->assertEquals($num, $i + 1, 'each iterators provide value and iteration count within OO-style call');
});
// docs
$str = '';
__u::each(array(1, 2, 3), function ($num) use(&$str) {
$str .= $num . ',';
});
$this->assertEquals('1,2,3,', $str);
$str = '';
$multiplier = 2;
__u::each(array(1, 2, 3), function ($num, $index) use($multiplier, &$str) {
$str .= $index . '=' . $num * $multiplier . ',';
});
$this->assertEquals('0=2,1=4,2=6,', $str);
}