public function testConstructAndGetAndSet()
{
$decimal = new Decimal(1.01);
$decimal->setMutable(true);
$this->assertEquals(1.01, $decimal->get());
$decimal->set(10);
$this->assertEquals(10, $decimal->get());
$decimal2 = new Decimal(2);
$this->assertEquals(2, $decimal2->get());
$decimal->set($decimal2);
$this->assertEquals(2, $decimal->get());
}
