Convert the `Conversations` component into a freestanding struct.

Unlike the previous example, this involves cloning an event broadcaster, as well. This is, per the documentation, how the type may be used. From <https://docs.rs/tokio/latest/tokio/sync/broadcast/fn.channel.html>:

> The Sender can be cloned to send to the same channel from multiple points in the process or it can be used concurrently from an `Arc`.

The language is less firm than the language sqlx uses for its pool, but the intent is clear enough, and it works in practice.

1 files changed, 7 insertions, 4 deletions

diff --git a/src/test/fixtures/conversation.rs b/src/test/fixtures/conversation.rs
index fb2f58d..f0d8c8c 100644
--- a/src/test/fixtures/conversation.rs
+++ b/src/test/fixtures/conversation.rs
@@ -1,3 +1,4 @@
+use axum::extract::FromRef;
 use faker_rand::{
     en_us::{addresses::CityName, names::FullName},
     faker_impl_from_templates,
@@ -6,15 +7,17 @@ use faker_rand::{
 use rand;
 
 use crate::{
-    app::App,
     clock::RequestedAt,
-    conversation::{self, Conversation},
+    conversation::{self, Conversation, app::Conversations},
     name::Name,
 };
 
-pub async fn create(app: &App, created_at: &RequestedAt) -> Conversation {
+pub async fn create<App>(app: &App, created_at: &RequestedAt) -> Conversation
+where
+    Conversations: FromRef<App>,
+{
     let name = propose();
-    app.conversations()
+    Conversations::from_ref(app)
         .create(&name, created_at)
         .await
         .expect("should always succeed if the conversation is actually new")