Re-add a test

src/mimeparser/mimeparser_tests.rs

@@ -7,6 +7,7 @@ use crate::{
     chat,
     chatlist::Chatlist,
     constants::{self, Blocked, DC_DESIRED_TEXT_LEN, DC_ELLIPSIS},
+    contact::Contact,
     key,
     message::{MessageState, MessengerMessage},
     receive_imf::receive_imf,
@@ -2041,6 +2042,27 @@ async fn test_multiple_autocrypt_hdrs() -> Result<()> {
     Ok(())
 }
 
+/// Tests receiving a simple signed-unencrypted message
+/// that was generated by an old version of Core that supported sending such messages.
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn test_receive_signed_only() -> Result<()> {
+    let mut tcm = TestContextManager::new();
+    let bob = &tcm.bob().await;
+
+    let imf_raw = include_bytes!("../../test-data/message/unencrypted_signed_simple.eml");
+    let msg = receive_imf(bob, imf_raw, false).await?.unwrap();
+    assert_eq!(msg.msg_ids.len(), 1);
+    let msg = Message::load_from_db(bob, msg.msg_ids[0]).await?;
+    assert_eq!(msg.get_text(), "Hello!");
+    assert_eq!(msg.viewtype, Viewtype::Text);
+    assert_eq!(msg.get_timestamp(), 1615987853);
+
+    let alice_contact = Contact::get_by_id(bob, msg.from_id).await.unwrap();
+    assert_eq!(alice_contact.is_key_contact(), false);
+
+    Ok(())
+}
+
 #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
 async fn test_huge_image_becomes_file() -> Result<()> {
     let t = TestContext::new_alice().await;

test-data/message/unencrypted_signed_simple.eml

@@ -0,0 +1,70 @@
+Content-Type: multipart/signed; protocol="application/pgp-signature"; protected; 
+	boundary="18aa9ed356ff9321_81d052095421b935_6b26de88a99ef0a0"
+MIME-Version: 1.0
+From: <alice@example.org>
+To: <bob@example.net>
+Subject: Message from alice@example.org
+Date: Wed, 17 Mar 2021 14:30:53 +0100 (CET)
+X-Not-Date: Tue, 28 Apr 2026 20:20:34 +0000
+Message-ID: <13140637-3c00-4553-8b76-fdbbbe3cc117@localhost>
+References: <13140637-3c00-4553-8b76-fdbbbe3cc117@localhost>
+Chat-Version: 1.0
+Chat-Disposition-Notification-To: alice@example.org
+Autocrypt: addr=alice@example.org; prefer-encrypt=mutual; keydata=mDMEXlh13RYJKwYBBAHaRw8BAQdAzfVIAleCXMJrq8VeLlEVof6ITCviMktKjmcBKAu4m5
+	 DCtAQfFggAZgUCAAAAABYhBC5vossjtTLXKGNLWGSwj2Gp7ZRDAhsDAh4JBAsJCAcFFQgJCgsDFgIB
+	 AycJAgIZASwUgAAAAAASABFyZWxheXNAY2hhdG1haWwuYXRhbGljZUBleGFtcGxlLm9yZwAA57ABAL
+	 DeNEB8l86SrqNKbUhDl5e7Q46VN+k/jxPEbIAs506MAQDXxgFEO2xAE19ykJI4JqU8+Zj+dwld9rXM
+	 Bh98UTnEBs0TPGFsaWNlQGV4YW1wbGUub3JnPsKRBBMWCAA5BQIAAAAAFiEELm+iyyO1MtcoY0tYZL
+	 CPYantlEMCGwMCHgkECwkIBwUVCAkKCwMWAgEDJwkCAhkBAAoJEGSwj2Gp7ZRD4e8BAKrOvjAu/Zd+
+	 +XeYCfN00mA7Vb6FtLlvVb0gT0hzv/rBAP0dYE736fa81MseX1PdUeN2Lf9SyNOVw3eW8W0nKXEbDr
+	 g4BF5Ydd0SCisGAQQBl1UBBQEBB0AG7cjWy2SFAU8KnltlubVW67rFiyfp01JrRe6Xqy22HQMBCAeI
+	 eAQYFggAIBYhBC5vossjtTLXKGNLWGSwj2Gp7ZRDBQJeWHXdAhsMAAoJEGSwj2Gp7ZRDLo8BAObE8G
+	 nsGVwKzNqCvHeWgJsqhjS3C6gvSlV3tEm9XmF6AQDXucIyVfoBwoyMh2h6cSn/ATn5QJb35pgo+ivp
+	 3jsMAg==
+
+
+--18aa9ed356ff9321_81d052095421b935_6b26de88a99ef0a0
+Content-Type: multipart/mixed; protected-headers="v1"; hp="clear"; 
+	boundary="18aa9ed357004185_2007cbc2d36c354a_6b26de88a99ef0a0"
+From: <alice@example.org>
+To: <bob@example.net>
+Subject: Message from alice@example.org
+Date: Tue, 28 Apr 2026 20:20:34 +0000
+References: <13140637-3c00-4553-8b76-fdbbbe3cc117@localhost>
+Chat-Version: 1.0
+Chat-Disposition-Notification-To: alice@example.org
+Autocrypt: addr=alice@example.org; prefer-encrypt=mutual; keydata=mDMEXlh13RYJKwYBBAHaRw8BAQdAzfVIAleCXMJrq8VeLlEVof6ITCviMktKjmcBKAu4m5
+	 DCtAQfFggAZgUCAAAAABYhBC5vossjtTLXKGNLWGSwj2Gp7ZRDAhsDAh4JBAsJCAcFFQgJCgsDFgIB
+	 AycJAgIZASwUgAAAAAASABFyZWxheXNAY2hhdG1haWwuYXRhbGljZUBleGFtcGxlLm9yZwAA57ABAL
+	 DeNEB8l86SrqNKbUhDl5e7Q46VN+k/jxPEbIAs506MAQDXxgFEO2xAE19ykJI4JqU8+Zj+dwld9rXM
+	 Bh98UTnEBs0TPGFsaWNlQGV4YW1wbGUub3JnPsKRBBMWCAA5BQIAAAAAFiEELm+iyyO1MtcoY0tYZL
+	 CPYantlEMCGwMCHgkECwkIBwUVCAkKCwMWAgEDJwkCAhkBAAoJEGSwj2Gp7ZRD4e8BAKrOvjAu/Zd+
+	 +XeYCfN00mA7Vb6FtLlvVb0gT0hzv/rBAP0dYE736fa81MseX1PdUeN2Lf9SyNOVw3eW8W0nKXEbDr
+	 g4BF5Ydd0SCisGAQQBl1UBBQEBB0AG7cjWy2SFAU8KnltlubVW67rFiyfp01JrRe6Xqy22HQMBCAeI
+	 eAQYFggAIBYhBC5vossjtTLXKGNLWGSwj2Gp7ZRDBQJeWHXdAhsMAAoJEGSwj2Gp7ZRDLo8BAObE8G
+	 nsGVwKzNqCvHeWgJsqhjS3C6gvSlV3tEm9XmF6AQDXucIyVfoBwoyMh2h6cSn/ATn5QJb35pgo+ivp
+	 3jsMAg==
+
+
+--18aa9ed357004185_2007cbc2d36c354a_6b26de88a99ef0a0
+Content-Type: text/plain; charset="utf-8"
+Message-ID: <13140637-3c00-4553-8b76-fdbbbe3cc117@localhost>
+Content-Transfer-Encoding: 7bit
+
+Hello!
+--18aa9ed357004185_2007cbc2d36c354a_6b26de88a99ef0a0--
+
+--18aa9ed356ff9321_81d052095421b935_6b26de88a99ef0a0
+Content-Type: application/pgp-signature; name="signature.asc"; 
+	charset="utf-8"
+Content-Description: OpenPGP digital signature
+Content-Disposition: attachment; filename="signature"
+Content-Transfer-Encoding: quoted-printable
+
+-----BEGIN PGP SIGNATURE-----=0A=0AwnUEABYIAB0WIQQub6LLI7Uy1yhjS1hksI9hqe2UQ=
+wWCafEWkQAKCRBksI9hqe2U=0AQ4qaAQCFSLVDANIjaXswP8V5zIwUSvGnUwsMD+ruozO0mG2AqA=
+D9EqpWeD6cc+is=0Av9/nvp6uHi35pUmDX0s1XKu3xbSTWg8=3D=0A=3Dr9hO=0A-----END PGP=
+ SIGNATURE-----=0A
+--18aa9ed356ff9321_81d052095421b935_6b26de88a99ef0a0--
+
+