Add PHP 8 compatibility (#33)

* Upgrade atoum/atoum

* Upgrade elasticsearch/elasticsearch and add ConnectionInterface return type

composer.json

@@ -12,10 +12,10 @@
     "require": {
         "php": ">=7.0",
         "ext-json": "*",
-        "elasticsearch/elasticsearch": "^5.1.0||^6.0.0"
+        "elasticsearch/elasticsearch": "^5.1.0||^6.0.0||^7.0"
     },
     "require-dev": {
-        "atoum/atoum":                      "^2.8||^3.0",
+        "atoum/atoum":                      "^4.0",
         "m6web/coke":                       "~1.2.0",
         "m6web/symfony2-coding-standard":   "~1.2.0",
         "symfony/dependency-injection":     "^4.4||^5.0",

src/M6Web/Bundle/ElasticsearchBundle/Elasticsearch/ConnectionPool/Selector/RandomStickySelector.php

@@ -24,7 +24,7 @@ class RandomStickySelector implements SelectorInterface
      *
      * @return ConnectionInterface
      */
-    public function select($connections)
+    public function select($connections): ConnectionInterface
     {
         if (empty($connections)) {
             throw new NoNodesAvailableException('No node to select from…');

src/M6Web/Bundle/ElasticsearchBundle/Elasticsearch/ConnectionPool/StaticAliveNoPingConnectionPool.php

@@ -5,6 +5,7 @@
 use Elasticsearch\Common\Exceptions\NoNodesAvailableException;
 use Elasticsearch\ConnectionPool\StaticNoPingConnectionPool;
 use Elasticsearch\Connections\Connection;
+use Elasticsearch\Connections\ConnectionInterface;
 
 /**
  * Class StaticAliveNoPingConnectionPool
@@ -52,7 +53,7 @@ public function setMaxPingTimeout($maxPingTimeout)
      * @return Connection
      * @throws \Elasticsearch\Common\Exceptions\NoNodesAvailableException
      */
-    public function nextConnection($force = false)
+    public function nextConnection($force = false): ConnectionInterface
     {
         // > Replace $this->connections by $connections in order to modify the list later.
         $connections = $this->connections;

src/M6Web/Bundle/ElasticsearchBundle/Tests/Units/DependencyInjection/M6WebElasticsearchExtension.php

@@ -3,7 +3,7 @@
 namespace M6Web\Bundle\ElasticsearchBundle\Tests\Units\DependencyInjection;
 
 use M6Web\Bundle\ElasticsearchBundle\DependencyInjection\M6WebElasticsearchExtension as TestedClass;
-use mageekguy\atoum\test;
+use atoum\atoum\test;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
 

src/M6Web/Bundle/ElasticsearchBundle/Tests/Units/Elasticsearch/ConnectionPool/Selector/RandomStickySelector.php

@@ -5,7 +5,7 @@
 use Elasticsearch\Common\Exceptions\NoNodesAvailableException;
 use Elasticsearch\Connections\Connection;
 use M6Web\Bundle\ElasticsearchBundle\Tests\Units\Elasticsearch\ConnectionMocker;
-use mageekguy\atoum\test;
+use atoum\atoum\test;
 
 /**
  * Class RandomStickySelector

src/M6Web/Bundle/ElasticsearchBundle/Tests/Units/Elasticsearch/ConnectionPool/StaticAliveNoPingConnectionPool.php

@@ -7,7 +7,7 @@
 use Elasticsearch\Connections\Connection;
 use Elasticsearch\Connections\ConnectionFactoryInterface;
 use M6Web\Bundle\ElasticsearchBundle\Tests\Units\Elasticsearch\ConnectionMocker;
-use mageekguy\atoum\test;
+use atoum\atoum\test;
 
 /**
  * Class StaticAliveNoPingConnectionPool

src/M6Web/Bundle/ElasticsearchBundle/Tests/Units/Handler/EventHandler.php

@@ -6,7 +6,7 @@
 use GuzzleHttp\Ring\Future\FutureArray;
 use M6Web\Bundle\ElasticsearchBundle\EventDispatcher\ElasticsearchEvent;
 use M6Web\Bundle\ElasticsearchBundle\Handler\EventHandler as TestedClass;
-use mageekguy\atoum;
+use atoum\atoum;
 use React\Promise\RejectedPromise;
 
 /**

src/M6Web/Bundle/ElasticsearchBundle/Tests/Units/Handler/HeadersHandler.php

@@ -3,7 +3,7 @@
 namespace M6Web\Bundle\ElasticsearchBundle\Tests\Units\Handler;
 
 use M6Web\Bundle\ElasticsearchBundle\Handler\HeadersHandler as TestedClass;
-use mageekguy\atoum;
+use atoum\atoum;
 
 /**
  * HeadersHandler