<?php class Swift_Bug71Test extends \PHPUnit\Framework\TestCase { private $message; protected function setUp() { $this->message = new Swift_Message('test'); } public function testCallingToStringAfterSettingNewBodyReflectsChanges() { $this->message->setBody('BODY1'); $this->assertRegExp('/BODY1/', $this->message->toString()); $this->message->setBody('BODY2'); $this->assertRegExp('/BODY2/', $this->message->toString()); } }