<?php
/** DomFramework - Tests
  * @package domframework
  * @author Dominique Fournier <dominique@fournier38.fr>
  * @license BSD
  */

namespace Domframework\Tests;

/** Test the jwt.php file */
class jwtTest extends \PHPUnit_Framework_TestCase
{
  public function test_createKey_1 ()
  {
    $jwt = new jwt ();
    $res = $jwt->createKey ();
    $this->assertSame (40, strlen ($res));
  }

  public function test_sign_1 ()
  {
    $jwt = new jwt ();
    $res = $this->invokeMethod ($jwt, "sign", "TEXT TO SIGN", "KEY TO USE",
      "HS384");
    $this->assertSame (
      "cQB+yNVvIER+Nw53MZfU/PGPAJlkKUnjMikmXAwVB9tcaINQH5a88LCDi0PmI5mZ",
      base64_encode ($res));
  }

  public function test_sign_2 ()
  {
    $jwt = new jwt ();
    $res = $this->invokeMethod ($jwt, "sign", "text to sign", "KEY TO USE",
       "HS384");
    $this->assertSame (
      "FLSkslsUGIpkP3xsJx5ephnCtH7K4jZSNxRxxCn3m7fsPK/MMfEIVr+h3heap80x",
      base64_encode ($res));
  }

  public function test_sign_3 ()
  {
    $jwt = new jwt ();
    $res = $this->invokeMethod ($jwt, "sign", "text to sign", "key to use",
      "HS384");
    $this->assertSame (
      "lBLlXb5Xo3z9zoEuO0obZdhqGNUKr8DaEsL991TpSPWIdB2067ckR+AJ1FW6in2B",
      base64_encode ($res));
  }

  public function test_encode_1 ()
  {
    $jwt = new jwt ();
    $res = $jwt->encode (array ("payload" => "value"), "key to use", "HS384");
    $this->assertSame (
      "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzM4NCJ9.".
      "eyJwYXlsb2FkIjoidmFsdWUifQ.".
      "0ByHaODQQjYEvmgU2u5LI034RRMc7CKJQ752ys19Fqj7QiTJO7-trerYKCxCyuge", $res);
  }

  public function test_decode_1 ()
  {
    $jwt = new jwt ();
    $res = $jwt->decode (
      "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzM4NCJ9.".
      "eyJwYXlsb2FkIjoidmFsdWUifQ.".
      "0ByHaODQQjYEvmgU2u5LI034RRMc7CKJQ752ys19Fqj7QiTJO7-trerYKCxCyuge",
      "key to use");
    $this->assertSame ((object)array ("payload" => "value"), $res);
  }

  public function test_decode_2 ()
  {
    $GLOBALS["hash_equals"] = false;
    $jwt = new jwt ();
    $res = $jwt->decode (
      "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzM4NCJ9.".
      "eyJwYXlsb2FkIjoidmFsdWUifQ.".
      "0ByHaODQQjYEvmgU2u5LI034RRMc7CKJQ752ys19Fqj7QiTJO7-trerYKCxCyuge",
      "key to use");
    $this->assertSame ((object)array ("payload" => "value"), $res);
  }

  public function test_decode_3 ()
  {
    $jwt = new jwt ();
    $this->expectException ("Exception", "JWT with Empty algorithm");
    $res = $jwt->decode (
      "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUXXXXXJ9.".
      "eyJwYXlsb2FkIjoidmFsdWUifQ.".
      "0ByHaODQQjYEvmgU2u5LI034RRMc7CKJQ752ys19Fqj7QiTJO7-trerYKCxCyuge",
      "key to use");
  }

  public function test_decode_4 ()
  {
    $jwt = new jwt ();
    $this->expectException ("Exception", "JWT Payload not readable");
    $res = $jwt->decode (
      "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzM4NCJ9.".
      "eyJwYXlsb2FkIjoiXXXXXXXXfQ.".
      "0ByHaODQQjYEvmgU2u5LI034RRMc7CKJQ752ys19Fqj7QiTJO7-trerYKCxCyuge",
      "key to use");
  }

  public function test_decode_5 ()
  {
    $jwt = new jwt ();
    $this->expectException ("Exception",
      "JWT Signature verification failed");
    $res = $jwt->decode (
      "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzM4NCJ9.".
      "eyJwYXlsb2FkIjoidmFsdWUifQ.".
      "1ByHaODQQjYEvmgU2u5LI034RRMc7CKJQ752ys19Fqj7QiTJO7-trerYKCxCyuge",
      "key to use");
  }

  public function test_decode_6 ()
  {
    $jwt = new jwt ();
    $this->expectException ("Exception",
      "JWT Signature not readable");
    $res = $jwt->decode (
      "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzM4NCJ9.".
      "eyJwYXlsb2FkIjoidmFsdWUifQ.".
      "0",
      "key to use");
  }

  public function test_decode_7 ()
  {
    $jwt = new jwt ();
    $this->expectException ("Exception",
      "Malformed JWT Token");
    $res = $jwt->decode (
      "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzM4NCJ9.".
      "eyJwYXlsb2FkIjoidmFsdWUifQ",
      "key to use");
  }

  ///////////////////////////////
  //    ENCRYPT THE PAYLOAD    //
  ///////////////////////////////
  /** Check the length of the otken with cipher
    */
  public function testEncrypt1 ()
  {
    $jwt = new jwt ();
    $key = $jwt->createKey ();
    $res = $jwt->encode (
      ["email" => "toto@example.com", "password" => "ToTo"],
      $key, "HS256", "123456789012345678901234");
    $this->assertSame (strlen ($res), 156);
  }

  /** Check if the encrypt/decrypt process return the same result
    */
  public function testEncrypyt2 ()
  {
    $jwt = new jwt ();
    $key = $jwt->createKey ();
    $payload = (object)["email" => "toto@example.com", "password" => "ToTo"];
    $token = $jwt->encode ($payload, $key, "HS256", "123456789012345678901234");
    $res = $jwt->decode ($token, $key, null, "123456789012345678901234");
    $this->assertSame ($res, $payload);
  }

  /** Check if the encrypted part is well unreadable
    */
  public function testEncrypt3 ()
  {
    $jwt = new jwt ();
    $key = $jwt->createKey ();
    $payload = (object)["email" => "toto@example.com", "password" => "ToTo"];
    $token = $jwt->encode ($payload, $key, "HS256", "123456789012345678901234");
    list ($header, $payload, $signature) = explode (".", $token);
    $res = strpos (base64_decode ($payload), "email");
    $this->assertSame ($res, false);
  }
}