public function testCopy()
{
$value = 'test';
$string = new Str($value);
$string2 = $string->copy();
$string3 = clone $string;
$this->assertNotSame($string, $string2);
$this->assertNotSame($string, $string3);
$this->assertTrue($string2->sameValueAs($string));
$this->assertTrue($string3->sameValueAs($string));
}
