public function testValue()
{
$object = new Series();
$array = array('0' => 'a', '1' => 'b', '2' => 'c', '3' => 'd');
$this->assertInternalType('array', $object->getValues());
$this->assertEmpty($object->getValues());
$this->assertInstanceOf('PhpOffice\\PhpPowerpoint\\Shape\\Chart\\Series', $object->setValues());
$this->assertEmpty($object->getValues());
$this->assertInstanceOf('PhpOffice\\PhpPowerpoint\\Shape\\Chart\\Series', $object->setValues($array));
$this->assertCount(count($array), $object->getValues());
$this->assertInstanceOf('PhpOffice\\PhpPowerpoint\\Shape\\Chart\\Series', $object->addValue(4, 'e'));
$this->assertCount(count($array) + 1, $object->getValues());
}