public function testIsList()
{
$this->assertFalse(isList(1));
$this->assertFalse(isList(array(1 => 'a')));
$this->assertFalse(isList(array(0 => 'a', 2 => 'c')));
$this->assertFalse(isList(new \StdClass()));
$this->assertTrue(isList([]));
$this->assertTrue(isList([1]));
$this->assertTrue(isList([1, 2, 3]));
$this->assertTrue(isList([10, 11, 13]));
}