Rename "channel" to "conversation" within the server.

I've split this from the schema and API changes because, frankly, it's huge. Annoyingly so. There are no semantic changes in this, it's all symbol changes, but there are a _lot_ of them because the term "channel" leaks all over everything in a service whose primary role is managing messages sent to channels (now, conversations).

I found a buggy test while working on this! It's not fixed in this commit, because it felt mean to hide a real change in the middle of this much chaff.

1 files changed, 273 insertions, 0 deletions

diff --git a/src/event/handlers/stream/test/conversation.rs b/src/event/handlers/stream/test/conversation.rs
new file mode 100644
index 0000000..5e08075
--- /dev/null
+++ b/src/event/handlers/stream/test/conversation.rs
@@ -0,0 +1,273 @@
+use axum::extract::State;
+use axum_extra::extract::Query;
+use futures::{future, stream::StreamExt as _};
+
+use crate::test::fixtures::{self, future::Expect as _};
+
+#[tokio::test]
+async fn creating() {
+    // Set up the environment
+
+    let app = fixtures::scratch_app().await;
+    let resume_point = fixtures::boot::resume_point(&app).await;
+
+    // Subscribe
+
+    let subscriber = fixtures::identity::create(&app, &fixtures::now()).await;
+    let super::Response(events) = super::handler(
+        State(app.clone()),
+        subscriber,
+        None,
+        Query(super::QueryParams { resume_point }),
+    )
+    .await
+    .expect("subscribe never fails");
+
+    // Create a conversation
+
+    let name = fixtures::conversation::propose();
+    let conversation = app
+        .conversations()
+        .create(&name, &fixtures::now())
+        .await
+        .expect("creating a conversation succeeds");
+
+    // Verify conversation created event
+
+    events
+        .filter_map(fixtures::event::stream::conversation)
+        .filter_map(fixtures::event::stream::conversation::created)
+        .filter(|event| future::ready(event.conversation == conversation))
+        .next()
+        .expect_some("conversation created event is delivered")
+        .await;
+}
+
+#[tokio::test]
+async fn previously_created() {
+    // Set up the environment
+
+    let app = fixtures::scratch_app().await;
+    let resume_point = fixtures::boot::resume_point(&app).await;
+
+    // Create a conversation
+
+    let name = fixtures::conversation::propose();
+    let conversation = app
+        .conversations()
+        .create(&name, &fixtures::now())
+        .await
+        .expect("creating a conversation succeeds");
+
+    // Subscribe
+
+    let subscriber = fixtures::identity::create(&app, &fixtures::now()).await;
+    let super::Response(events) = super::handler(
+        State(app.clone()),
+        subscriber,
+        None,
+        Query(super::QueryParams { resume_point }),
+    )
+    .await
+    .expect("subscribe never fails");
+
+    // Verify conversation created event
+
+    let _ = events
+        .filter_map(fixtures::event::stream::conversation)
+        .filter_map(fixtures::event::stream::conversation::created)
+        .filter(|event| future::ready(event.conversation == conversation))
+        .next()
+        .expect_some("conversation created event is delivered")
+        .await;
+}
+
+#[tokio::test]
+async fn expiring() {
+    // Set up the environment
+
+    let app = fixtures::scratch_app().await;
+    let conversation = fixtures::conversation::create(&app, &fixtures::ancient()).await;
+    let resume_point = fixtures::boot::resume_point(&app).await;
+
+    // Subscribe
+
+    let subscriber = fixtures::identity::create(&app, &fixtures::now()).await;
+    let super::Response(events) = super::handler(
+        State(app.clone()),
+        subscriber,
+        None,
+        Query(super::QueryParams { resume_point }),
+    )
+    .await
+    .expect("subscribe never fails");
+
+    // Expire conversations
+
+    app.conversations()
+        .expire(&fixtures::now())
+        .await
+        .expect("expiring conversations always succeeds");
+
+    // Check for expiry event
+    let _ = events
+        .filter_map(fixtures::event::stream::conversation)
+        .filter_map(fixtures::event::stream::conversation::deleted)
+        .filter(|event| future::ready(event.id == conversation.id))
+        .next()
+        .expect_some("a deleted conversation event will be delivered")
+        .await;
+}
+
+#[tokio::test]
+async fn previously_expired() {
+    // Set up the environment
+
+    let app = fixtures::scratch_app().await;
+    let conversation = fixtures::conversation::create(&app, &fixtures::ancient()).await;
+    let resume_point = fixtures::boot::resume_point(&app).await;
+
+    // Expire conversations
+
+    app.conversations()
+        .expire(&fixtures::now())
+        .await
+        .expect("expiring conversation always succeeds");
+
+    // Subscribe
+
+    let subscriber = fixtures::identity::create(&app, &fixtures::now()).await;
+    let super::Response(events) = super::handler(
+        State(app.clone()),
+        subscriber,
+        None,
+        Query(super::QueryParams { resume_point }),
+    )
+    .await
+    .expect("subscribe never fails");
+
+    // Check for expiry event
+    let _ = events
+        .filter_map(fixtures::event::stream::conversation)
+        .filter_map(fixtures::event::stream::conversation::deleted)
+        .filter(|event| future::ready(event.id == conversation.id))
+        .next()
+        .expect_some("a deleted conversation event will be delivered")
+        .await;
+}
+
+#[tokio::test]
+async fn deleting() {
+    // Set up the environment
+
+    let app = fixtures::scratch_app().await;
+    let conversation = fixtures::conversation::create(&app, &fixtures::now()).await;
+    let resume_point = fixtures::boot::resume_point(&app).await;
+
+    // Subscribe
+
+    let subscriber = fixtures::identity::create(&app, &fixtures::now()).await;
+    let super::Response(events) = super::handler(
+        State(app.clone()),
+        subscriber,
+        None,
+        Query(super::QueryParams { resume_point }),
+    )
+    .await
+    .expect("subscribe never fails");
+
+    // Delete the conversation
+
+    app.conversations()
+        .delete(&conversation.id, &fixtures::now())
+        .await
+        .expect("deleting a valid conversation succeeds");
+
+    // Check for delete event
+    let _ = events
+        .filter_map(fixtures::event::stream::conversation)
+        .filter_map(fixtures::event::stream::conversation::deleted)
+        .filter(|event| future::ready(event.id == conversation.id))
+        .next()
+        .expect_some("a deleted conversation event will be delivered")
+        .await;
+}
+
+#[tokio::test]
+async fn previously_deleted() {
+    // Set up the environment
+
+    let app = fixtures::scratch_app().await;
+    let conversation = fixtures::conversation::create(&app, &fixtures::now()).await;
+    let resume_point = fixtures::boot::resume_point(&app).await;
+
+    // Delete the conversation
+
+    app.conversations()
+        .delete(&conversation.id, &fixtures::now())
+        .await
+        .expect("deleting a valid conversation succeeds");
+
+    // Subscribe
+
+    let subscriber = fixtures::identity::create(&app, &fixtures::now()).await;
+    let super::Response(events) = super::handler(
+        State(app.clone()),
+        subscriber,
+        None,
+        Query(super::QueryParams { resume_point }),
+    )
+    .await
+    .expect("subscribe never fails");
+
+    // Check for expiry event
+    let _ = events
+        .filter_map(fixtures::event::stream::conversation)
+        .filter_map(fixtures::event::stream::conversation::deleted)
+        .filter(|event| future::ready(event.id == conversation.id))
+        .next()
+        .expect_some("a deleted conversation event will be delivered")
+        .await;
+}
+
+#[tokio::test]
+async fn previously_purged() {
+    // Set up the environment
+
+    let app = fixtures::scratch_app().await;
+    let conversation = fixtures::conversation::create(&app, &fixtures::ancient()).await;
+    let resume_point = fixtures::boot::resume_point(&app).await;
+
+    // Delete and purge the conversation
+
+    app.conversations()
+        .delete(&conversation.id, &fixtures::ancient())
+        .await
+        .expect("deleting a valid conversation succeeds");
+
+    app.conversations()
+        .purge(&fixtures::now())
+        .await
+        .expect("purging conversations always succeeds");
+
+    // Subscribe
+
+    let subscriber = fixtures::identity::create(&app, &fixtures::now()).await;
+    let super::Response(events) = super::handler(
+        State(app.clone()),
+        subscriber,
+        None,
+        Query(super::QueryParams { resume_point }),
+    )
+    .await
+    .expect("subscribe never fails");
+
+    // Check for expiry event
+    events
+        .filter_map(fixtures::event::stream::conversation)
+        .filter_map(fixtures::event::stream::conversation::deleted)
+        .filter(|event| future::ready(event.id == conversation.id))
+        .next()
+        .expect_wait("deleted conversation events not delivered")
+        .await;
+}