Support ps arguments for containerTop()

Author: clue

src/Client.php

@@ -116,13 +116,14 @@ public function containerInspect($container)
     /**
      * List processes running inside the container id
      *
-     * @param string $container container ID
+     * @param string      $container container ID
+     * @param string|null $ps_args   (optional) ps arguments to use (e.g. aux)
      * @return Promise Promise<array>
      * @link https://docs.docker.com/reference/api/docker_remote_api_v1.15/#list-processes-running-inside-a-container
      */
-    public function containerTop($container)
+    public function containerTop($container, $ps_args = null)
     {
-        return $this->browser->get($this->url('/containers/%s/top', $container))->then(array($this->parser, 'expectJson'));
+        return $this->browser->get($this->url('/containers/%s/top?ps_args=%s', $container, $ps_args))->then(array($this->parser, 'expectJson'));
     }
 
     /**

tests/ClientTest.php

@@ -52,12 +52,12 @@ public function testContainerInspect()
         $this->expectPromiseResolveWith($json, $this->client->containerInspect(123));
     }
 
-    public function testContainerTop()
+    public function testContainerTopArgs()
     {
         $json = array();
-        $this->expectRequestFlow('get', '/containers/123/top', $this->createResponseJson($json), 'expectJson');
+        $this->expectRequestFlow('get', '/containers/123/top?ps_args=aux', $this->createResponseJson($json), 'expectJson');
 
-        $this->expectPromiseResolveWith($json, $this->client->containerTop(123));
+        $this->expectPromiseResolveWith($json, $this->client->containerTop(123, 'aux'));
     }
 
     public function testContainerChanges()