public function testAmountAccessors()
{
$charge = new Charge('charge');
$charge->setAmount(new Money(5000.0, 'JPY'));
$this->assertEquals(new Money(5000.0, 'JPY'), $charge->getAmount());
$charge->setAmount(300.5, 'USD');
$this->assertEquals(new Money(300.5, 'USD'), $charge->getAmount());
}
