Support for Client Ref on the Nexmo API

src/Channels/NexmoSmsChannel.php

@@ -59,6 +59,7 @@ public function send($notifiable, Notification $notification)
             'from' => $message->from ?: $this->from,
             'to' => $to,
             'text' => trim($message->content),
+            'client_ref' => $message->clientRef,
         ]);
     }
 }

src/Messages/NexmoMessage.php

@@ -25,6 +25,13 @@ class NexmoMessage
      */
     public $type = 'text';
 
+    /**
+     * The client reference.
+     *
+     * @var string
+     */
+    public $clientRef = '';
+
     /**
      * Create a new message instance.
      *
@@ -73,4 +80,17 @@ public function unicode()
 
         return $this;
     }
+
+    /**
+     * Set the client reference (up to 40 characters).
+     *
+     * @param  string  $clientRef
+     * @return $this
+     */
+    public function clientRef($clientRef)
+    {
+        $this->clientRef = $clientRef;
+
+        return $this;
+    }
 }

tests/NotificationNexmoChannelTest.php

@@ -31,6 +31,7 @@ public function testSmsIsSentViaNexmo()
             'from' => '4444444444',
             'to' => '5555555555',
             'text' => 'this is my message',
+            'client_ref' => '',
         ]);
 
         $channel->send($notifiable, $notification);
@@ -50,6 +51,27 @@ public function testSmsIsSentViaNexmoWithCustomFrom()
             'from' => '5554443333',
             'to' => '5555555555',
             'text' => 'this is my message',
+            'client_ref' => '',
+        ]);
+
+        $channel->send($notifiable, $notification);
+    }
+
+    public function testSmsIsSentViaNexmoWithCustomFromAndClientRef()
+    {
+        $notification = new NotificationNexmoChannelTestCustomFromAndClientRefNotification;
+        $notifiable = new NotificationNexmoChannelTestNotifiable;
+
+        $channel = new NexmoSmsChannel(
+            $nexmo = m::mock(Client::class), '4444444444'
+        );
+
+        $nexmo->shouldReceive('message->send')->with([
+            'type' => 'unicode',
+            'from' => '5554443333',
+            'to' => '5555555555',
+            'text' => 'this is my message',
+            'client_ref' => '11',
         ]);
 
         $channel->send($notifiable, $notification);
@@ -78,3 +100,11 @@ public function toNexmo($notifiable)
         return (new NexmoMessage('this is my message'))->from('5554443333')->unicode();
     }
 }
+
+class NotificationNexmoChannelTestCustomFromAndClientRefNotification extends Notification
+{
+    public function toNexmo($notifiable)
+    {
+        return (new NexmoMessage('this is my message'))->from('5554443333')->unicode()->clientRef('11');
+    }
+}