To fix issue #3

src/Service/MessageService.php

@@ -148,7 +148,7 @@ public function createHtmlMessage(string|Address|AddressInterface|array|AddressL
 
     /**
      * Create a text message
-     * @param string|Address|AddressInterface|array|AddressList|Traversable $from
+     * @param string|Address|AddressInterface|array|AddressList|Traversable|null $from
      * @param string|Address|AddressInterface|array|AddressList|Traversable $to
      * @param string $subject
      * @param string|ModelInterface $nameOrModel
@@ -180,16 +180,16 @@ public function send(Message $message): void
 
     /**
      * Create default message
-     * @param string|Address|AddressInterface|array|AddressList|Traversable $from
+     * @param string|Address|AddressInterface|array|AddressList|Traversable|null $from
      * @param string $encoding
-     * @param string|array $to
+     * @param string|Address|AddressInterface|array|AddressList|Traversable $to
      * @param string $subject
      * @param MimeMessage|string $body
      * @return Message
      */
     protected function getDefaultMessage(string|Address|AddressInterface|array|AddressList|Traversable|null $from,
                                          string $encoding,
-                                         string|array $to,
+                                         string|Address|AddressInterface|array|AddressList|Traversable $to,
                                          string $subject,
                                          MimeMessage|string $body): Message
     {

test/LmcMailTest/Mock/MockAddress.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace LmcMailTest\Mock;
+
+class MockAddress implements \Laminas\Mail\Address\AddressInterface
+{
+
+    const EMAIL_ADDRESS = '[email protected]';
+    const NAME = 'Test Example';
+
+    /**
+     * @inheritDoc
+     */
+    public function getEmail()
+    {
+        return self::EMAIL_ADDRESS;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getName()
+    {
+        return self::NAME;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function toString()
+    {
+        return sprintf('%s <%s>', self::NAME, self::EMAIL_ADDRESS);
+    }
+}

test/LmcMailTest/Service/MessageServiceTest.php

@@ -2,12 +2,14 @@
 
 namespace Service;
 
+use Laminas\Mail\AddressList;
 use Laminas\Mail\Message;
 use Laminas\Mime\Message as MimeMessage;
 use Laminas\ServiceManager\ServiceManager;
 use Laminas\View\Model\ViewModel;
 use LmcMail\Service\MessageService;
 use LmcMailTest\Util\ServiceManagerFactory;
+use LmcMailTest\Mock\MockAddress;
 
 class MessageServiceTest extends \PHPUnit\Framework\TestCase
 {
@@ -81,7 +83,36 @@ public function testCreateHtmlMessageManyTos()
         $this->assertCount(2, $to);
         $addresses = $to->get('[email protected]');
         $this->assertNotFalse($addresses,'Address not found');
-        $this->assertEquals('[email protected]', $addresses->getEmail(), "Was expecting email address to be [email protected]");
+        $this->assertEquals('[email protected]', $addresses->getEmail(), "Was expecting email address to be [email protected]");
+    }
+
+    public function testCreateHtmlMessageAddressListTo()
+    {
+        $addressList = new AddressList();
+        $addressList->add('[email protected]');
+        $addressList->add('[email protected]');
+        $message = $this->messageService->createHtmlMessage([],$addressList, 'test','mail/test_html');
+        $this->assertInstanceOf(Message::class, $message);
+        $body = $message->getBody();
+        $this->assertInstanceOf(MimeMessage::class, $body);
+        $to = $message->getTo();
+        $this->assertCount(2, $to);
+        $addresses = $to->get('[email protected]');
+        $this->assertNotFalse($addresses,'Address not found');
+        $this->assertEquals('[email protected]', $addresses->getEmail(), "Was expecting email address to be [email protected]");
+    }
+
+    public function testCreateHtmlMessageAddressInterfaceTo()
+    {
+        $message = $this->messageService->createHtmlMessage([],new MockAddress(), 'test','mail/test_html');
+        $this->assertInstanceOf(Message::class, $message);
+        $body = $message->getBody();
+        $this->assertInstanceOf(MimeMessage::class, $body);
+        $to = $message->getTo();
+        $this->assertCount(1, $to);
+        $addresses = $to->get('[email protected]');
+        $this->assertNotFalse($addresses,'Address not found');
+        $this->assertEquals('[email protected]', $addresses->getEmail(), "Was expecting email address to be [email protected]");
     }
 
     public function testSendTextMessage()