Represent channels and messages using a split "History" and "Snapshot" model.

This separates the code that figures out what happened to an entity from the code that represents it to a user, and makes it easier to compute a snapshot at a point in time (for things like bootstrap). It also makes the internal logic a bit easier to follow, since it's easier to tell whether you're working with a point in time or with the whole recorded history.

This hefty.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/test/fixtures/event.rs b/src/test/fixtures/event.rs
new file mode 100644
index 0000000..09f0490
--- /dev/null
+++ b/src/test/fixtures/event.rs
@@ -0,0 +1,11 @@
+use crate::{
+    event::{Event, Kind},
+    message::Message,
+};
+
+pub fn message_sent(event: &Event, message: &Message) -> bool {
+    matches!(
+        &event.kind,
+        Kind::MessageSent(event) if message == &event.into()
+    )
+}