public function testSumTimes()
{
$fiveBucks = Money::dollar(5);
$tenFrancs = Money::franc(10);
$bank = new Bank();
$bank->addRate('CHF', 'USD', 2);
$step1 = new Sum($fiveBucks, $tenFrancs);
$sum = $step1->times(2);
$result = $bank->reduce($sum, 'USD');
$this->assertEquals(Money::dollar(20), $result);
}
$five = Money::dollar(5);
$t->ok($five->times(2)->equals(Money::dollar(10)));
$t->ok($five->times(3)->equals(Money::dollar(15)));
unset($five);
// multiplication
$five = Money::franc(5);
$t->ok($five->times(2)->equals(Money::franc(10)));
$t->ok($five->times(3)->equals(Money::franc(15)));
unset($five);
// equality
$five = Money::dollar(5);
$t->ok($five->equals(Money::dollar(5)), 'equals');
$t->ok(!$five->equals(Money::dollar(6)), 'equals');
$five = Money::franc(5);
$t->ok($five->equals(Money::franc(5)), 'equals');
$t->ok(!$five->equals(Money::franc(6)), 'equals');
$t->ok(!$five->equals(Money::dollar(5)), 'equals');
abstract class Money
{
protected $amount;
function equals($money)
{
return get_class($this) === get_class($money) && $this->amount === $money->amount;
}
static function dollar($amount)
{
return new Dollar($amount);
}
static function franc($amount)
{
return new Franc($amount);