getFolder('INBOX'); self::assertInstanceOf(Folder::class, $folder); $message = $this->appendMessageTemplate($folder, "plain.eml"); self::assertInstanceOf(Message::class, $message); $message->setFlag("Seen"); $flags = $this->getClient()->getConnection()->flags($message->uid, IMAP::ST_UID)->validatedData(); self::assertIsArray($flags); self::assertSame(1, count($flags)); self::assertSame("\\Seen", $flags[$message->uid][0]); $message->delete(); } }