/**
* {@inheritdoc}
*/
public function calculate($base, TaxRateInterface $rate)
{
if ($rate->isIncludedInPrice()) {
return (int) round($base - $base / (1 + $rate->getAmount()));
}
return (int) round($base * $rate->getAmount());
}
function it_calculates_correct_tax_for_given_base_if_rate_is_included_in_price(TaxRateInterface $rate)
{
$rate->isIncludedInPrice()->willReturn(true);
$rate->getAmount()->willReturn(0.23);
$this->calculate(10000, $rate)->shouldReturn(1870);
$rate->getAmount()->willReturn(0.2);
$this->calculate(315, $rate)->shouldReturn(53);
}
function it_should_delegate_calculation_to_a_correct_calculator($calculator, TaxRateInterface $rate)
{
$rate->getCalculator()->willReturn('default');
$calculator->calculate(100, $rate)->shouldBeCalled()->willReturn(23);
$this->calculate(100, $rate)->shouldReturn(23);
}
/**
* {@inheritdoc}
*/
public function calculate($base, TaxRateInterface $rate)
{
/** @var CalculatorInterface $calculator */
$calculator = $this->calculatorsRegistry->get($rate->getCalculator());
return $calculator->calculate($base, $rate);
}
function it_should_complain_if_correct_calculator_doesnt_exist_for_given_rate(TaxRateInterface $rate, CalculatorInterface $calculator)
{
$this->registerCalculator('default', $calculator);
$rate->getCalculator()->willReturn('custom');
$this->shouldThrow('InvalidArgumentException')->duringCalculate(100, $rate);
}
/**
* {@inheritdoc}
*/
public function calculate($base, TaxRateInterface $rate)
{
$calculator = $this->getCalculator($rate->getCalculator());
return $calculator->calculate($base, $rate);
}