Check we can connect when constructing, throw exception if not

Author: lornajane

src/PHPCouchDB/Server.php

@@ -24,7 +24,8 @@ class Server
      * @param array $options Supply either a string "url" parameter OR a
      *  \GuzzleHttp\ClientInterface "client" parameter if more configuration
      *  is required
-     * @throws \PHPCouchDB\Exception\ServerException if there's a problem with parsing arguments or creating the client
+     * @throws \PHPCouchDB\Exception\ServerException if there's a problem
+     *  with parsing arguments or connecting to the database
      */
     public function __construct(array $options)
     {
@@ -35,20 +36,26 @@ public function __construct(array $options)
         }
 
         if (isset($options['client']) && $options['client'] instanceof \GuzzleHttp\ClientInterface) {
-            $this->client = $options['client'];
+            $client = $options['client'];
         } elseif (isset($options['url'])) {
-            try {
-                $this->client = new \GuzzleHttp\Client(["base_uri" => $options['url']]);
-            } catch (Exception $e) {
-                throw new \PHPCouchDB\Exception\ServerException(
-                    "Could not connect with URL.  Error: " . $e->getMessage()
-                );
-            }
+            $client = new \GuzzleHttp\Client(["base_uri" => $options['url']]);
         } else {
             throw new \PHPCouchDB\Exception\ServerException(
                 'Failed to parse $options, array should contain either a url or a client'
             );
         }
+
+        // try to connect as well
+        try {
+            $client->get('/');
+            $this->client = $client;
+        } catch (\GuzzleHttp\Exception\ConnectException $e) {
+            throw new \PHPCouchDB\Exception\ServerException(
+                "Could not connect to database.  Error: " . $e->getMessage(),
+                0, $e
+            );
+        }
+
     }
 
     /**