Support array returning from routeNotificationForMail (#19)

* support address returned as array

* apply cs fixer

* update tests

src/SendGridChannel.php

@@ -46,7 +46,15 @@ public function send($notifiable, Notification $notification)
         }
 
         if (empty($message->tos)) {
-            $message->to($notifiable->routeNotificationFor('mail'));
+            $to = $notifiable->routeNotificationFor('mail');
+
+            // Handle the case where routeNotificationForMail returns an array (email => name)
+            if (is_array($to)) {
+                reset($to);
+                $message->to(key($to), current($to));
+            } else {
+                $message->to($to);
+            }
         }
 
         if (! ($message instanceof SendGridMessage)) {

tests/SendGridChannelTest.php

@@ -47,14 +47,11 @@ public function toSendGrid($notifiable)
         };
 
         $channel = new SendGridChannel(
-            $sendgrid = Mockery::mock(new SendGrid('x'))
+            $this->mockSendgrid()
         );
 
         $this->app->instance(SendGridChannel::class, $channel);
 
-        $response = Mockery::mock(Response::class);
-        $response->shouldReceive('statusCode')->andReturn(200);
-
         $message = $notification->toSendGrid($notifiable);
 
         $this->assertEquals($message->templateId, 'sendgrid-template-id');
@@ -68,9 +65,6 @@ public function toSendGrid($notifiable)
         $this->assertEquals($message->replyTo->getName(), 'Reply To');
         $this->assertEquals($message->sandboxMode, false);
 
-        // TODO: Verify that the Mail instance passed contains all the info from above
-        $sendgrid->shouldReceive('send')->once()->andReturn($response);
-
         $notifiable->notify($notification);
 
         Event::assertDispatched(
@@ -83,4 +77,76 @@ public function toSendGrid($notifiable)
             fn ($event) => $event->response instanceof Response
         );
     }
+
+    public function testDefaultToAddress()
+    {
+        Event::fake();
+
+        $channel = new SendGridChannel($this->mockSendgrid());
+
+        $notification = new class extends Notification {
+            public $sendgridMessage;
+
+            public function via()
+            {
+                return [SendGridChannel::class];
+            }
+
+            public function toSendGrid($notifiable)
+            {
+                $this->sendgridMessage = (new SendGridMessage('sendgrid-template-id'))
+                    ->from('test@example.com', 'Example User')
+                    ->replyTo('replyto@example.com', 'Reply To')
+                    ->payload([
+                        'bar' => 'foo',
+                        'baz' => 'foo2',
+                    ]);
+
+                return $this->sendgridMessage;
+            }
+        };
+
+        $notifiable = new class {
+            use Notifiable;
+
+            public function routeNotificationForMail()
+            {
+                return 'john@example.com';
+            }
+        };
+
+        $channel->send($notifiable, $notification);
+        $message = $notification->sendgridMessage;
+        $this->assertEquals($message->tos[0]->getEmail(), 'john@example.com');
+
+        // Let's also support returning an array (email => name)
+        // https://laravel.com/docs/10.x/notifications#customizing-the-recipient
+        $notifiableWithEmailAndName = new class {
+            use Notifiable;
+
+            public function routeNotificationForMail()
+            {
+                return [
+                    'john@example.com' => 'John Doe',
+                ];
+            }
+        };
+
+        $channel->send($notifiableWithEmailAndName, $notification);
+        $message = $notification->sendgridMessage;
+
+        $this->assertEquals($message->tos[0]->getEmail(), 'john@example.com');
+        $this->assertEquals($message->tos[0]->getName(), 'John Doe');
+    }
+
+    private function mockSendgrid($statusCode = 200)
+    {
+        $response = Mockery::mock(Response::class);
+        $response->shouldReceive('statusCode')->andReturn($statusCode);
+
+        $sendgrid = Mockery::mock(new SendGrid('x'));
+        $sendgrid->shouldReceive('send')->andReturn($response);
+
+        return $sendgrid;
+    }
 }