public function testArrayable()
{
$collection = new Collection();
$collection[] = 1;
$collection[] = 2;
$collection[] = 3;
$this->assertEquals([1, 2, 3], $collection->toArray());
$collection1 = new Collection();
$collection1->fromArray([3, 4, 5]);
$collection2 = new Collection();
$collection2[] = 3;
$collection2[] = 4;
$collection2[] = 5;
$this->assertEquals($collection1, $collection2);
}
public function testCollect()
{
$i1 = new \T4\Core\Std(['id' => 1, 'title' => 'foo']);
$i2 = new \T4\Core\Std(['id' => 2, 'title' => 'bar']);
$i3 = new \T4\Core\Std(['id' => 3, 'title' => 'baz']);
$collection = new Collection();
$collection->append($i1);
$collection->append($i2);
$collection->append($i3);
$this->assertEquals([new \T4\Core\Std(['id' => 1, 'title' => 'foo']), new \T4\Core\Std(['id' => 2, 'title' => 'bar']), new \T4\Core\Std(['id' => 3, 'title' => 'baz'])], $collection->toArray());
$ids = $collection->collect('id');
$this->assertEquals([1, 2, 3], $ids);
$titles = $collection->collect(function ($x) {
return $x->title;
});
$this->assertEquals(['foo', 'bar', 'baz'], $titles);
$collection = new Collection([['id' => 1, 'title' => 'foo'], ['id' => 2, 'title' => 'bar'], ['id' => 3, 'title' => 'baz']]);
$ids = $collection->collect('id');
$this->assertEquals([1, 2, 3], $ids);
$titles = $collection->collect(function ($x) {
return $x['title'];
});
$this->assertEquals(['foo', 'bar', 'baz'], $titles);
}
protected static function getAllChildrenByIndex(Collection $tree, $index)
{
$lvl = $tree[$index]->__lvl;
$tail = array_slice($tree->toArray(), $index + 1);
$ret = [];
foreach ($tail as $el) {
if ($el->__lvl <= $lvl) {
break;
}
$ret[] = $el;
}
return new Collection($ret);
}
