/**
* @covers Moontoast\Math\BigNumber::abs
*/
public function testAbs()
{
$bn1 = new BigNumber('-1234.5678', 4);
$bn2 = new BigNumber('5678');
$bn3 = new BigNumber('0');
$this->assertSame('1234.5678', $bn1->abs()->getValue());
$this->assertSame('5678', $bn2->abs()->getValue());
$this->assertSame('0', $bn3->abs()->getValue());
}