public function testFractionOfPositiveNumber()
{
$x = new \MyOddWeb\BigNumber("1.2");
$fraction = $x->Frac()->ToString();
$this->assertSame("0.2", $fraction);
$x = new \MyOddWeb\BigNumber("12345.678");
$fraction = $x->Frac()->ToString();
$this->assertSame("0.678", $fraction);
$x = new \MyOddWeb\BigNumber("12345.2");
$fraction = $x->Frac()->ToString();
$this->assertSame("0.2", $fraction);
$x = new \MyOddWeb\BigNumber("12");
$fraction = $x->Frac()->ToString();
$this->assertSame("0", $fraction);
$this->assertTrue($x->IsZero());
$x = new \MyOddWeb\BigNumber("0.23456");
$fraction = $x->Frac()->ToString();
$this->assertSame("0.23456", $fraction);
}