feat(tests): Add a macro to assert that a TimelineEventKind was encrypted

crates/matrix-sdk/src/test_utils/mod.rs

@@ -222,6 +222,50 @@ macro_rules! assert_next_eq_with_timeout {
     };
 }
 
+/// Given a [`TimelineEvent`] assert that the event was decrypted and that the
+/// message matches the expected value.
+///
+/// # Examples
+///
+/// ```no_run
+/// # async {
+/// # let client: matrix_sdk::Client = unreachable!();
+/// # let room_id: ruma::OwnedRoomId = unreachable!();
+/// # let event_id: ruma::OwnedEventId = unreachable!();
+/// use matrix_sdk::assert_decrypted_message_eq;
+///
+/// let room =
+///     client.get_room(&room_id).expect("Bob should have received the invite");
+///
+/// let event = room.event(&event_id, None).await?;
+///
+/// assert_decrypted_message_eq!(
+///     event,
+///     "It's a secret to everybody!",
+///     "The decrypted event should match the expected secret message"
+/// );
+/// # anyhow::Ok(()) };
+/// ```
+#[macro_export]
+macro_rules! assert_decrypted_message_eq {
+    ($event:expr, $expected:expr, $($msg:tt)*) => {{
+        assert_matches2::assert_let!($crate::deserialized_responses::TimelineEventKind::Decrypted(decrypted_event) = $event.kind);
+
+        let deserialized_event = decrypted_event
+            .event
+            .deserialize()
+            .expect("We should be able to deserialize the decrypted event");
+
+        let content =
+            deserialized_event.original_content().expect("The event should not have been redacted");
+        assert_matches2::assert_let!($crate::ruma::events::AnyMessageLikeEventContent::RoomMessage(content) = content);
+        assert_eq!(content.body(), $expected, $($msg)*);
+    }};
+    ($event:expr, $expected:expr) => {{
+        assert_decrypted_message_eq!($event, $expected, "The decrypted content did not match to the expected value");
+    }};
+}
+
 #[doc(hidden)]
 #[macro_export]
 macro_rules! assert_next_eq_with_timeout_impl {