Fix error when no cc or bcc are set

Author: hkdobrev

src/Openbuildings/Swiftmailer/FilterPlugin.php

@@ -143,11 +143,11 @@ public function beforeSendPerformed(\Swift_Events_SendEvent $evt)
 	{
 		$message = $evt->getMessage();
 
-		$message->setTo(FilterPlugin::filterEmailArray($this->getWhitelist(), $this->getBlacklist(), $message->getTo()));
+		$message->setTo(FilterPlugin::filterEmailArray($this->getWhitelist(), $this->getBlacklist(), (array) $message->getTo()));
 
-		$message->setCc(FilterPlugin::filterEmailArray($this->getWhitelist(), $this->getBlacklist(), $message->getCc()));
+		$message->setCc(FilterPlugin::filterEmailArray($this->getWhitelist(), $this->getBlacklist(), (array) $message->getCc()));
 
-		$message->setBcc(FilterPlugin::filterEmailArray($this->getWhitelist(), $this->getBlacklist(), $message->getBcc()));
+		$message->setBcc(FilterPlugin::filterEmailArray($this->getWhitelist(), $this->getBlacklist(), (array) $message->getBcc()));
 	}
 
 	/**

tests/tests/FilterPluginTest.php

@@ -29,6 +29,47 @@ public function test_integration()
 		$this->assertEquals(array(), $message->getBcc());
 	}
 
+	public function test_integration_with_empty_cc()
+	{
+		$mailer = Swift_Mailer::newInstance(Swift_NullTransport::newInstance());
+
+		$mailer->registerPLugin(new FilterPlugin('example.com', '[email protected]'));
+
+		$message = Swift_Message::newInstance();
+
+		$message->setFrom('[email protected]');
+		$message->setTo('[email protected]');
+		$message->setBcc(array('[email protected]', '[email protected]', '[email protected]'));
+		$message->setSubject('Test');
+		$message->setBody('Test Email');
+
+		$mailer->send($message);
+
+		$this->assertEquals(array('[email protected]' => ''), $message->getTo());
+		$this->assertEquals(array(), $message->getCc());
+		$this->assertEquals(array('[email protected]' => ''), $message->getBcc());
+	}
+
+	public function test_integration_with_empty_cc_and_bcc()
+	{
+		$mailer = Swift_Mailer::newInstance(Swift_NullTransport::newInstance());
+
+		$mailer->registerPLugin(new FilterPlugin('example.com', '[email protected]'));
+
+		$message = Swift_Message::newInstance();
+
+		$message->setFrom('[email protected]');
+		$message->setTo('[email protected]');
+		$message->setSubject('Test');
+		$message->setBody('Test Email');
+
+		$mailer->send($message);
+
+		$this->assertEquals(array('[email protected]' => ''), $message->getTo());
+		$this->assertEquals(array(), $message->getCc());
+		$this->assertEquals(array(), $message->getBcc());
+	}
+
 	public function data_emailMatches()
 	{
 		return array(