/**
* @param Money $money
* @return Money
*/
public function add(Money $money)
{
if (!$this->currency->equals($money->currency)) {
throw new \RuntimeException("You can't add different currencies");
}
return new Money($this->amount + $money->amount(), $this->currency);
}
public function test_it_should_not_add_different_currencies()
{
$stub = $this->getCurrencyDummy();
$stub->expects($this->once())->method('equals')->willReturn(false);
$money = new Money(10, $stub);
$this->setExpectedException(\RuntimeException::class, "You can't add different currencies");
$money->add(new Money(5, $this->getCurrencyDummy()));
}
