public function test()
{
$this->assertTrue(F\true([]));
$this->assertTrue(F\true(new ArrayIterator([])));
$this->assertTrue(F\true($this->trueArray));
$this->assertTrue(F\true($this->trueIterator));
$this->assertTrue(F\true($this->trueHash));
$this->assertTrue(F\true($this->trueHashIterator));
$this->assertFalse(F\true($this->falseArray));
$this->assertFalse(F\true($this->falseIterator));
$this->assertFalse(F\true($this->falseHash));
$this->assertFalse(F\true($this->falseHashIterator));
}