public function setUp()
{
parent::setUp();
$this->trueArray = [false, false, false, false];
$this->trueIterator = new ArrayIterator($this->trueArray);
$this->trueHash = ['k1' => false, 'k2' => false, 'k3' => false];
$this->trueHashIterator = new ArrayIterator($this->trueHash);
$this->falseArray = [false, 0, false, 'foo', [], (object) []];
$this->falseIterator = new ArrayIterator($this->falseArray);
$this->falseHash = ['k1' => false, 'k2' => 0, 'k3' => false];
$this->falseHashIterator = new ArrayIterator($this->falseHash);
}