public function testPrnt()
    {
        $this->assertTrue($this->object->validPrnt('1234'));
        $this->assertTrue($this->object->validPrnt('1 2 3 4'));
        $this->assertTrue($this->object->validPrnt('maça'));
        $this->assertTrue($this->object->validPrnt('TESTE'));
        $this->assertTrue($this->object->validPrnt('t e S t e'));
        $this->assertTrue($this->object->validPrnt('a1b2C3'));
        $this->assertTrue($this->object->validPrnt('tes$t@e123(*)'));
        $this->assertTrue($this->object->validPrnt('TESTE.'));
        $this->assertTrue($this->object->validPrnt('!@#$%$*()-_+=[]{}?/:;.><|\\'));
        $this->assertFalse($this->object->validPrnt('mázçãêÀ'));
        $content = <<<'TESTE'
   Hello
   this is a test
   
TESTE;
        $this->assertFalse($this->object->validPrnt($content));
    }