public function testSerializesOutputStrings()
{
$stringType = Type::string();
$this->assertSame('string', $stringType->serialize('string'));
$this->assertSame('1', $stringType->serialize(1));
$this->assertSame('-1.1', $stringType->serialize(-1.1));
$this->assertSame('true', $stringType->serialize(true));
$this->assertSame('false', $stringType->serialize(false));
}