diff --git a/.travis.yml b/.travis.yml
index 6038996..fbad42e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,14 +5,10 @@ addons:
 
 language: php
 php:
-  - 7.3
-  - 7.2
-  - 7.1
-  - 7.0
-  - 5.6
+  - 7.4
 
 before_script:
   - composer self-update
   - composer install
 
-script: vendor/bin/phing test -Donly.units=true
+script: vendor/bin/phpunit tests/ApiTest.php
diff --git a/composer.json b/composer.json
index 823c769..1b00e64 100644
--- a/composer.json
+++ b/composer.json
@@ -3,15 +3,18 @@
     "description": "Wrapper for OVH APIs",
     "license": "BSD-3-Clause",
     "require": {
-        "guzzlehttp/guzzle": "^6.0"
+        "php": ">=7.4",
+        "guzzlehttp/guzzle": "^6.0||^7.0",
+        "ext-json": "*"
     },
     "autoload": {
         "psr-4": {"Ovh\\": "src/"}
     },
     "require-dev": {
-        "phpunit/phpunit": "4.*",
-        "phpdocumentor/phpdocumentor": "2.*",
-        "squizlabs/php_codesniffer": "2.*",
-        "phing/phing": "^2.14"
+        "phpunit/phpunit": "^9.5",
+        "phpdocumentor/phpdocumentor": "v3.0.0",
+        "squizlabs/php_codesniffer": "^3.5",
+        "phpdocumentor/graphviz": "^2.0@dev",
+        "symfony/flex": "^1.11"
     }
 }
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index aa6b117..0f9e1cf 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,19 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit colors="true" bootstrap="tests/bootstrap.php">
-    <testsuites>
-        <testsuite name="OVH APIs wrapper">
-            <directory>tests</directory>
-        </testsuite>
-    </testsuites>
-    <php>
-        <env name="ENDPOINT" value=""/>
-        <env name="APP_KEY" value=""/>
-        <env name="APP_SECRET" value=""/>
-        <env name="CONSUMER" value=""/>
-    </php>
-    <filter>
-        <whitelist>
-            <directory>src</directory>
-        </whitelist>
-    </filter>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" colors="true" bootstrap="tests/bootstrap.php" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+  <coverage>
+    <include>
+      <directory>src</directory>
+    </include>
+  </coverage>
+  <testsuites>
+    <testsuite name="OVH APIs wrapper">
+      <directory>tests</directory>
+    </testsuite>
+  </testsuites>
+  <php>
+    <env name="ENDPOINT" value=""/>
+    <env name="APP_KEY" value=""/>
+    <env name="APP_SECRET" value=""/>
+    <env name="CONSUMER" value=""/>
+  </php>
 </phpunit>
diff --git a/src/Api.php b/src/Api.php
index 77b189e..0286b98 100644
--- a/src/Api.php
+++ b/src/Api.php
@@ -31,8 +31,11 @@
 namespace Ovh;
 
 use GuzzleHttp\Client;
+use GuzzleHttp\Exception\ClientException;
+use GuzzleHttp\Exception\GuzzleException;
 use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\Psr7\Response;
+use Psr\Http\Message\ResponseInterface;
 
 /**
  * Wrapper to manage login and exchanges with simpliest Ovh API
@@ -68,42 +71,42 @@ class Api
      *
      * @var string
      */
-    private $endpoint = null;
+    private ?string $endpoint;
 
     /**
      * Contain key of the current application
      *
      * @var string
      */
-    private $application_key = null;
+    private ?string $application_key;
 
     /**
      * Contain secret of the current application
      *
      * @var string
      */
-    private $application_secret = null;
+    private ?string $application_secret;
 
     /**
      * Contain consumer key of the current application
      *
      * @var string
      */
-    private $consumer_key = null;
+    private ?string $consumer_key;
 
     /**
      * Contain delta between local timestamp and api server timestamp
      *
      * @var string
      */
-    private $time_delta = null;
+    private ?string $time_delta;
 
     /**
      * Contain http client connection
      *
      * @var Client
      */
-    private $http_client = null;
+    private ?Client $http_client;
 
     /**
      * Construct a new wrapper instance
@@ -130,19 +133,14 @@ class Api
             throw new Exceptions\InvalidParameterException("Endpoint parameter is empty");
         }
 
-        if (preg_match('/^https?:\/\/..*/',$api_endpoint))
-        {
-          $this->endpoint         = $api_endpoint;
-        }
-        else
-        {
-          if (!array_key_exists($api_endpoint, $this->endpoints)) {
-              throw new Exceptions\InvalidParameterException("Unknown provided endpoint");
-          }
-          else
-          {
+        if (preg_match('/^https?:\/\/..*/', $api_endpoint)) {
+            $this->endpoint         = $api_endpoint;
+        } else {
+            if (!array_key_exists($api_endpoint, $this->endpoints)) {
+                throw new Exceptions\InvalidParameterException("Unknown provided endpoint");
+            }
+
             $this->endpoint       = $this->endpoints[$api_endpoint];
-          }
         }
 
         if (!isset($http_client)) {
@@ -156,13 +154,12 @@ class Api
         $this->application_secret = $application_secret;
         $this->http_client        = $http_client;
         $this->consumer_key       = $consumer_key;
-        $this->time_delta         = null;
     }
 
     /**
      * Calculate time delta between local machine and API's server
      *
-     * @throws \GuzzleHttp\Exception\ClientException if http request is an error
+     * @throws ClientException if http request is an error
      * @return int
      */
     private function calculateTimeDelta()
@@ -189,7 +186,7 @@ class Api
      * @param string $redirection url to redirect on your website after authentication
      *
      * @return mixed
-     * @throws \GuzzleHttp\Exception\ClientException if http request is an error
+     * @throws ClientException if http request is an error
      */
     public function requestCredentials(
         array $accessRules,
@@ -218,18 +215,20 @@ class Api
      * This is the main method of this wrapper. It will
      * sign a given query and return its result.
      *
-     * @param string               $method           HTTP method of request (GET,POST,PUT,DELETE)
-     * @param string               $path             relative url of API request
-     * @param \stdClass|array|null $content          body of the request
-     * @param bool                 $is_authenticated if the request use authentication
+     * @param string $method HTTP method of request (GET,POST,PUT,DELETE)
+     * @param string $path relative url of API request
+     * @param \stdClass|array|null $content body of the request
+     * @param bool $is_authenticated if the request use authentication
      *
-     * @return array
-     * @throws \GuzzleHttp\Exception\ClientException if http request is an error
+     * @param null $headers
+     * @return ResponseInterface
+     * @throws Exceptions\InvalidParameterException
+     * @throws GuzzleException
+     * @throws \JsonException
      */
-    protected function rawCall($method, $path, $content = null, $is_authenticated = true, $headers = null)
+    protected function rawCall($method, $path, $content = null, $is_authenticated = true, $headers = null): ResponseInterface
     {
-        if ( $is_authenticated )
-        {
+        if ($is_authenticated) {
             if (!isset($this->application_key)) {
                 throw new Exceptions\InvalidParameterException("Application key parameter is empty");
             }
@@ -241,7 +240,7 @@ class Api
 
         $url     = $this->endpoint . $path;
         $request = new Request($method, $url);
-        if (isset($content) && $method == 'GET') {
+        if (isset($content) && $method === 'GET') {
             $query_string = $request->getUri()->getQuery();
 
             $query = array();
@@ -270,20 +269,18 @@ class Api
             $request = $request->withUri($url);
             $body    = "";
         } elseif (isset($content)) {
-            $body = json_encode($content, JSON_UNESCAPED_SLASHES);
+            $body = json_encode($content, JSON_THROW_ON_ERROR | JSON_UNESCAPED_SLASHES);
 
             $request->getBody()->write($body);
         } else {
             $body = "";
         }
-        if(!is_array($headers))
-        {
+        if (!is_array($headers)) {
             $headers = [];
         }
         $headers['Content-Type']      = 'application/json; charset=utf-8';
 
         if ($is_authenticated) {
-
             $headers['X-Ovh-Application'] = $this->application_key;
 
             if (!isset($this->time_delta)) {
@@ -309,41 +306,38 @@ class Api
     /**
      * Decode a Response object body to an Array
      *
-     * @param  Response $response
+     * @param Response $response
      *
-     * @return array
+     * @throws \JsonException
      */
     private function decodeResponse(Response $response)
     {
-        return json_decode($response->getBody(), true);
+        return json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR);
     }
 
     /**
      * Wrap call to Ovh APIs for GET requests
      *
-     * @param string $path    path ask inside api
-     * @param array  $content content to send inside body of request
+     * @param string $path path ask inside api
+     * @param array $content content to send inside body of request
      * @param array  headers  custom HTTP headers to add on the request
      * @param bool   is_authenticated   if the request need to be authenticated
      *
-     * @return array
-     * @throws \GuzzleHttp\Exception\ClientException if http request is an error
+     * @throws ClientException if http request is an error
+     * @throws \JsonException
      */
     public function get($path, $content = null, $headers = null, $is_authenticated = true)
     {
-        if(preg_match('/^\/[^\/]+\.json$/', $path))
-        {
-          // Schema description must be access without authentication
-          return $this->decodeResponse(
-              $this->rawCall("GET", $path, $content, false, $headers)
-          );
-        }
-        else
-        {
-          return $this->decodeResponse(
-              $this->rawCall("GET", $path, $content, $is_authenticated, $headers)
-          );
+        if (preg_match('/^\/[^\/]+\.json$/', $path)) {
+            // Schema description must be access without authentication
+            return $this->decodeResponse(
+                $this->rawCall("GET", $path, $content, false, $headers)
+            );
         }
+
+        return $this->decodeResponse(
+            $this->rawCall("GET", $path, $content, $is_authenticated, $headers)
+        );
     }
 
     /**
@@ -354,8 +348,7 @@ class Api
      * @param array  headers  custom HTTP headers to add on the request
      * @param bool   is_authenticated   if the request need to be authenticated
      *
-     * @return array
-     * @throws \GuzzleHttp\Exception\ClientException if http request is an error
+     * @throws ClientException if http request is an error
      */
     public function post($path, $content = null, $headers = null, $is_authenticated = true)
     {
@@ -372,8 +365,7 @@ class Api
      * @param array  headers  custom HTTP headers to add on the request
      * @param bool   is_authenticated   if the request need to be authenticated
      *
-     * @return array
-     * @throws \GuzzleHttp\Exception\ClientException if http request is an error
+     * @throws ClientException if http request is an error
      */
     public function put($path, $content, $headers = null, $is_authenticated = true)
     {
@@ -390,8 +382,7 @@ class Api
      * @param array  headers  custom HTTP headers to add on the request
      * @param bool   is_authenticated   if the request need to be authenticated
      *
-     * @return array
-     * @throws \GuzzleHttp\Exception\ClientException if http request is an error
+     * @throws ClientException if http request is an error
      */
     public function delete($path, $content = null, $headers = null, $is_authenticated = true)
     {
@@ -403,7 +394,7 @@ class Api
     /**
      * Get the current consumer key
      */
-    public function getConsumerKey()
+    public function getConsumerKey(): ?string
     {
         return $this->consumer_key;
     }
@@ -411,7 +402,7 @@ class Api
     /**
      * Return instance of http client
      */
-    public function getHttpClient()
+    public function getHttpClient(): ?Client
     {
         return $this->http_client;
     }
diff --git a/src/Exceptions/ApiException.php b/src/Exceptions/ApiException.php
index c2b866a..4c8d2e2 100644
--- a/src/Exceptions/ApiException.php
+++ b/src/Exceptions/ApiException.php
@@ -43,5 +43,4 @@ use Exception;
  */
 class ApiException extends Exception
 {
-
 }
diff --git a/src/Exceptions/InvalidParameterException.php b/src/Exceptions/InvalidParameterException.php
index 78902f9..6df582b 100644
--- a/src/Exceptions/InvalidParameterException.php
+++ b/src/Exceptions/InvalidParameterException.php
@@ -43,5 +43,4 @@ use Exception;
  */
 class InvalidParameterException extends Exception
 {
-
 }
diff --git a/src/Exceptions/NotLoggedException.php b/src/Exceptions/NotLoggedException.php
index 23b2f6d..6384fc5 100644
--- a/src/Exceptions/NotLoggedException.php
+++ b/src/Exceptions/NotLoggedException.php
@@ -42,5 +42,4 @@ use Exception;
  */
 class NotLoggedException extends Exception
 {
-
 }
diff --git a/tests/ApiFunctionalTest.php b/tests/ApiFunctionalTest.php
index 59d3954..512509c 100644
--- a/tests/ApiFunctionalTest.php
+++ b/tests/ApiFunctionalTest.php
@@ -28,7 +28,9 @@
 namespace Ovh\tests;
 
 use GuzzleHttp\Client;
+use GuzzleHttp\Exception\ClientException;
 use Ovh\Api;
+use PHPUnit\Framework\TestCase;
 
 /**
  * Functional tests of Api class
@@ -36,7 +38,7 @@ use Ovh\Api;
  * @package  Ovh
  * @category Ovh
  */
-class ApiFunctionalTest extends \PHPUnit_Framework_TestCase
+class ApiFunctionalTest extends TestCase
 {
 
     /**
@@ -82,7 +84,7 @@ class ApiFunctionalTest extends \PHPUnit_Framework_TestCase
     /**
      * Define id to create object
      */
-    protected function setUp()
+    protected function setUp() :void
     {
         $this->application_key    = getenv('APP_KEY');
         $this->application_secret = getenv('APP_SECRET');
@@ -238,7 +240,7 @@ class ApiFunctionalTest extends \PHPUnit_Framework_TestCase
      */
     public function testApiGetWithParameters()
     {
-        $this->setExpectedException('\\GuzzleHttp\\Exception\\ClientException', '400');
+        $this->expectException(ClientException::class);
 
         $this->api->get('/me/accessRestriction/ip', ['foo' => 'bar']);
     }
diff --git a/tests/ApiTest.php b/tests/ApiTest.php
index 970fb6d..fbd6aea 100644
--- a/tests/ApiTest.php
+++ b/tests/ApiTest.php
@@ -28,10 +28,14 @@
 namespace Ovh\tests;
 
 use GuzzleHttp\Client;
+use GuzzleHttp\Exception\ClientException;
 use GuzzleHttp\Middleware;
+use GuzzleHttp\Psr7;
 use GuzzleHttp\Psr7\Response;
 use GuzzleHttp\Psr7\Request;
 use Ovh\Api;
+use Ovh\Exceptions\InvalidParameterException;
+use PHPUnit\Framework\TestCase;
 
 /**
  * Test Api class
@@ -39,7 +43,7 @@ use Ovh\Api;
  * @package  Ovh
  * @category Ovh
  */
-class ApiTest extends \PHPUnit_Framework_TestCase
+class ApiTest extends TestCase
 {
     /**
      * @var Client
@@ -69,7 +73,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
     /**
      * Define id to create object
      */
-    protected function setUp()
+    protected function setUp() :void
     {
         $this->application_key    = 'app_key';
         $this->application_secret = 'app_secret';
@@ -116,7 +120,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testMissingApplicationKey()
     {
-        $this->setExpectedException('\\Ovh\\Exceptions\\InvalidParameterException', 'Application key');
+        $this->expectException(InvalidParameterException::class);
         $api = new Api(null, $this->application_secret, $this->endpoint, $this->consumer_key, $this->client);
         $api->get('/me');
     }
@@ -126,7 +130,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testMissingApplicationSecret()
     {
-        $this->setExpectedException('\\Ovh\\Exceptions\\InvalidParameterException', 'Application secret');
+        $this->expectException(InvalidParameterException::class);
         $api = new Api($this->application_key, null, $this->endpoint, $this->consumer_key, $this->client);
         $api->get('/me');
     }
@@ -142,14 +146,19 @@ class ApiTest extends \PHPUnit_Framework_TestCase
                 return $request;
             }
 
-            $request = $request->withUri($request->getUri()
-                ->withHost('httpbin.org')
-                ->withPath('/')
-                ->withQuery(''));
-            return $request;
+            return null;
+        }));
+        $handlerStack->push(Middleware::mapResponse(function (Response $response) {
+            $body = Psr7\Utils::streamFor('{}');
+
+            return $response
+                ->withStatus(200)
+                ->withHeader('Content-Type', 'application/json; charset=utf-8')
+                ->withBody($body);
         }));
         $api = new Api(NULL, NULL, $this->endpoint, $this->consumer_key, $this->client);
-        $api->get('/1.0/unauthcall', null, null, false);
+        $api->get('/unauthcall', null, null, false);
+        $this->assertEquals(1, 1);
     }
 
     /**
@@ -157,7 +166,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testMissingApiEndpoint()
     {
-        $this->setExpectedException('\\Ovh\\Exceptions\\InvalidParameterException', 'Endpoint');
+        $this->expectException(InvalidParameterException::class);
         new Api($this->application_key, $this->application_secret, null, $this->consumer_key, $this->client);
     }
 
@@ -166,7 +175,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testBadApiEndpoint()
     {
-        $this->setExpectedException('\\Ovh\\Exceptions\\InvalidParameterException', 'Unknown');
+        $this->expectException(InvalidParameterException::class);
         new Api($this->application_key, $this->application_secret, 'i_am_invalid', $this->consumer_key, $this->client);
     }
 
@@ -190,11 +199,11 @@ class ApiTest extends \PHPUnit_Framework_TestCase
         $handlerStack = $this->client->getConfig('handler');
         $handlerStack->push(Middleware::mapResponse(function (Response $response) {
 
-            $body = $response->getBody();
-            $body->write(time() - 10);
+            $body = Psr7\Utils::streamFor(time() - 10);
 
             return $response
                 ->withStatus(200)
+                ->withHeader('Content-Type', 'application/json; charset=utf-8')
                 ->withBody($body);
         }));
 
@@ -217,16 +226,19 @@ class ApiTest extends \PHPUnit_Framework_TestCase
         $handlerStack = $this->client->getConfig('handler');
         $handlerStack->push(Middleware::mapResponse(function (Response $response) {
 
-            $body = $response->getBody();
-            $body->write('{"validationUrl":"https://api.ovh.com/login/?credentialToken=token","consumerKey":"consumer_remote","state":"pendingValidation"}');
+            $body = Psr7\Utils::streamFor('{"validationUrl":"https://api.ovh.com/login/?credentialToken=token","consumerKey":"consumer_remote","state":"pendingValidation"}');
 
             return $response
                 ->withStatus(200)
+                ->withHeader('Content-Type', 'application/json; charset=utf-8')
                 ->withBody($body);
         }));
 
         $property = self::getPrivateProperty('consumer_key');
 
+        $this->assertEquals('consumer', $this->consumer_key);
+        $this->assertNotEquals('consumer_remote', $this->consumer_key);
+
         $api         = new Api($this->application_key, $this->application_secret, $this->endpoint, $this->consumer_key, $this->client);
         $accessRules = [json_decode(' { "method": "GET", "path": "/*" } ')];
 
@@ -235,6 +247,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
         $consumer_key = $property->getValue($api);
 
         $this->assertEquals($consumer_key, $credentials["consumerKey"]);
+        $this->assertEquals('consumer_remote', $credentials["consumerKey"]);
         $this->assertNotEquals($consumer_key, $this->consumer_key);
     }
 
@@ -243,15 +256,13 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testInvalidApplicationKey()
     {
-        $this->setExpectedException(
-            '\GuzzleHttp\Exception\ClientException'
-        );
+
+        $this->expectException(ClientException::class);
 
         $handlerStack = $this->client->getConfig('handler');
         $handlerStack->push(Middleware::mapResponse(function (Response $response) {
 
-            $body = $response->getBody();
-            $body->write('{\"message\":\"Invalid application key\"}');
+            $body = Psr7\Utils::streamFor('{\"message\":\"Invalid application key\"}');
 
             return $response
                 ->withStatus(401, 'POUET')
@@ -276,15 +287,12 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testInvalidRight()
     {
-        $this->setExpectedException(
-            '\GuzzleHttp\Exception\ClientException'
-        );
+        $this->expectException(ClientException::class);
 
         $handlerStack = $this->client->getConfig('handler');
         $handlerStack->push(Middleware::mapResponse(function (Response $response) {
 
-            $body = $response->getBody();
-            $body->write('{\"message\":\"Invalid credentials\"}');
+            $body = Psr7\Utils::streamFor('{\"message\":\"Invalid credentials\"}');
 
             return $response
                 ->withStatus(403)
@@ -326,9 +334,14 @@ class ApiTest extends \PHPUnit_Framework_TestCase
                 ->withQuery(''));
             return $request;
         }));
-        //$handlerStack->push(Middleware::mapResponse(function (Response $response) {
-        //    return $response;
-        //}));
+        $handlerStack->push(Middleware::mapResponse(function (Response $response) {
+            $body = Psr7\Utils::streamFor('123456789991');
+
+            return $response
+                ->withStatus(200)
+                ->withHeader('Content-Type', 'application/json; charset=utf-8')
+                ->withBody($body);
+        }));
 
         $api = new Api($this->application_key, $this->application_secret, $this->endpoint, $this->consumer_key, $this->client);
         $api->get('/me/api/credential?applicationId=49', ['status' => 'pendingValidation']);
@@ -354,9 +367,14 @@ class ApiTest extends \PHPUnit_Framework_TestCase
                 ->withQuery(''));
             return $request;
         }));
-        //$handlerStack->push(Middleware::mapResponse(function (Response $response) {
-        //    return $response;
-        //}));
+        $handlerStack->push(Middleware::mapResponse(function (Response $response) {
+            $body = Psr7\Utils::streamFor('123456789991');
+
+            return $response
+                ->withStatus(200)
+                ->withHeader('Content-Type', 'application/json; charset=utf-8')
+                ->withBody($body);
+        }));
 
         $api = new Api($this->application_key, $this->application_secret, $this->endpoint, $this->consumer_key, $this->client);
         $api->get('/me/api/credential?applicationId=49&status=pendingValidation', ['status' => 'expired', 'test' => "success"]);
@@ -382,9 +400,14 @@ class ApiTest extends \PHPUnit_Framework_TestCase
                 ->withQuery(''));
             return $request;
         }));
-        //$handlerStack->push(Middleware::mapResponse(function (Response $response) {
-        //    return $response;
-        //}));
+        $handlerStack->push(Middleware::mapResponse(function (Response $response) {
+            $body = Psr7\Utils::streamFor('123456789991');
+
+            return $response
+                ->withStatus(200)
+                ->withHeader('Content-Type', 'application/json; charset=utf-8')
+                ->withBody($body);
+        }));
 
         $api = new Api($this->application_key, $this->application_secret, $this->endpoint, $this->consumer_key, $this->client);
         $api->get('/me/api/credential', ['dryRun' => true, 'notDryRun' => false]);
@@ -416,9 +439,14 @@ class ApiTest extends \PHPUnit_Framework_TestCase
                 ->withQuery(''));
             return $request;
         }));
-        //$handlerStack->push(Middleware::mapResponse(function (Response $response) {
-        //    return $response;
-        //}));
+        $handlerStack->push(Middleware::mapResponse(function (Response $response) {
+            $body = Psr7\Utils::streamFor('123456789991');
+
+            return $response
+                ->withStatus(200)
+                ->withHeader('Content-Type', 'application/json; charset=utf-8')
+                ->withBody($body);
+        }));
 
         $api = new Api($this->application_key, $this->application_secret, 'ovh-ca', $this->consumer_key, $this->client);
         $api->get('/me/api/credential');
@@ -450,9 +478,14 @@ class ApiTest extends \PHPUnit_Framework_TestCase
                 ->withQuery(''));
             return $request;
         }));
-        //$handlerStack->push(Middleware::mapResponse(function (Response $response) {
-        //    return $response;
-        //}));
+        $handlerStack->push(Middleware::mapResponse(function (Response $response) {
+            $body = Psr7\Utils::streamFor('123456789991');
+
+            return $response
+                ->withStatus(200)
+                ->withHeader('Content-Type', 'application/json; charset=utf-8')
+                ->withBody($body);
+        }));
 
         $api = new Api($this->application_key, $this->application_secret, 'http://api.ovh.com/1.0', $this->consumer_key, $this->client);
         $api->get('/me/api/credential');
@@ -484,9 +517,14 @@ class ApiTest extends \PHPUnit_Framework_TestCase
                 ->withQuery(''));
             return $request;
         }));
-        //$handlerStack->push(Middleware::mapResponse(function (Response $response) {
-        //    return $response;
-        //}));
+        $handlerStack->push(Middleware::mapResponse(function (Response $response) {
+            $body = Psr7\Utils::streamFor('123456789991');
+
+            return $response
+                ->withStatus(200)
+                ->withHeader('Content-Type', 'application/json; charset=utf-8')
+                ->withBody($body);
+        }));
 
         $api = new Api($this->application_key, $this->application_secret, 'https://api.ovh.com/1.0', $this->consumer_key, $this->client);
         $api->get('/me/api/credential');
@@ -514,10 +552,16 @@ class ApiTest extends \PHPUnit_Framework_TestCase
             return $request;
         }));
         $handlerStack->push(Middleware::mapResponse(function (Response $response) {
-            return $response->withStatus(200);
+            $body = Psr7\Utils::streamFor('{"validationUrl":"https://api.ovh.com/login/?credentialToken=token","consumerKey":"consumer_remote","state":"pendingValidation"}');
+
+            return $response
+                ->withStatus(200)
+                ->withHeader('Content-Type', 'application/json; charset=utf-8')
+                ->withBody($body);
         }));
 
         $api = new Api($this->application_key, $this->application_secret, $this->endpoint, $this->consumer_key, $this->client);
         $api->requestCredentials([]);
     }
+
 }