/**
  * バリデーションが正しく通ることをテストします
  */
 public function testValidationSuccess()
 {
     captcha();
     $phrase = session('captcha.phrase');
     $this->request['name'] = 'testing';
     $this->request['email'] = '*****@*****.**';
     $this->request['password'] = '******';
     $this->request['password_confirmation'] = 'testing';
     $this->request['captcha_code'] = $phrase;
     $this->assertNull($this->request->validate());
 }