public function testAsComplexReturnsComplexType()
 {
     $c = $this->object->asComplex();
     $this->assertInstanceOf('\\Chippyash\\Type\\Number\\Complex\\ComplexType', $c);
     $this->assertEquals('3/4', (string) $c);
     $this->assertInstanceOf('Chippyash\\Type\\Number\\Rational\\RationalType', $c->r());
     $this->assertInstanceOf('Chippyash\\Type\\Number\\Rational\\RationalType', $c->i());
 }