Side B adds a focused, meaningful test verifying the rank-centrality algorithm correctly recovers order from a random spanning-tree of votes, adding real regression coverage for core ranking logic. Side A's commit, while improving dev tooling (persistent fixture data, cargo-watch), also silently removes UI elements from the room page unrelated to its stated purpose, mixing dev-script improvements with an unexplained regression.
constitution · epochs · watch · epoch 3
comparison
c_a337088f57f0 (tommy-mor) vs c_b7cc67300477 (tommy-mor)
download prompt · raw event · cmp_d30ef234402e2f
council reasoning
B adds a focused regression test of core rank-centrality behavior (26-item spanning tree with perfect strength ratios recovers true order), which permanently guards product-critical ranking logic. A improves local DX (cargo-watch fixture, persistent fixture-data/, preferred port) and trims redundant room-page markup, but that is peripheral tooling rather than lasting correctness of the main system.
Side A substantially improves the developer workflow by replacing a one-shot release build with a persistent cargo-watch server, reusing seeded fixture data across runs, preferring a stable port with fallback, and rebasing saved URLs so the fixture remains usable after restarts. Side B adds a useful regression test for rank centrality on a random spanning-tree input, but it only increases test coverage and does not change the project's runtime behavior or architecture.
sides
A — c_a337088f57f0 (tommy-mor)
message
[a45842df] better dev iteration script
diff preview
diff --git a/.gitignore b/.gitignore
index 9cd2eaece834481bee87639cd7cb6be77f33e302..b70cf5b97cd3556e061233d8b0aefd333568a991 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@ target/
repomix-output.xml
psalms_kjv.txt
dev-data/
+fixture-data/
.worktrees/
.specstory/
.specstory/
diff --git a/bb.edn b/bb.edn
index 5d1d642d75d03f70879d7673e7ad95360336a8b1..4680e82d4227057d2eea6041dc5647beb759131d 100644
--- a/bb.edn
+++ b/bb.edn
@@ -47,7 +47,7 @@
"RUST_LOG" "info"})})))}
fixture
- {:doc "Run local server + mock OAuth + seeded walkthrough data for manual browser demos"
+ {:doc "Run local server via cargo-watch + mock OAuth + seeded walkthrough data (persistent ./fixture-data/, prefers PORT 8080). Requires cargo-watch."
:requires ([test.walkthrough-fixture :as walkthrough-fixture])
:task (walkthrough-fixture/run-fixture)}
diff --git a/server/src/html/forum.rs b/server/src/html/forum.rs
index e00e7110e2ad778d63b3d00b0cc4ffe20ba2e0d4..815fc6529062b103553644fc15e516334aec2b88 100644
--- a/server/src/html/forum.rs
+++ b/server/src/html/forum.rs
@@ -976,12 +976,6 @@ pub async fn room_page(
html! {
(strip)
nav class="breadcrumb" { (bc_room(&nav, slug_display, None)) }
- h2 { (slug_display) }
- p class="muted" { (room_id) }
- p class="muted room-links" {
- "room garden · "
- a href=(nav.garden_root_url()) { "~" }
- }
(room_members_section_markup(&reduced, &room_id, false))
h3 { "threads" }
(render_thread_feed(Some(&nav), "room-thread-feed", &rows, now))
diff --git a/test/common.clj b/test/common.clj
index 76a3e99fdb67c10bcb5c2f53d8bcd0917398af50..c6deba0d90995b0e3f9c4b8ad66a516ed19b870e 100644
--- a/test/common.clj
+++ b/test/common.clj
@@ -107,6 +107,16 @@
(.close ss)
port))
+(defn pick-port-prefer
+ "Use `preferred` if it can be bound, otherwise an ephemeral port (same as `pick-port`)."
+ [preferred]
+ (try
+ (let [ss (java.net.ServerSocket. preferred)]
+ (.close ss)
+ preferred)
+ (catch java.io.IOException _
+ (pick-port))))
+
(defn wait-for-server
"Poll /healthz until it returns 'ok', up to `timeout-ms`."
[base-url timeout-ms]
diff --git a/test/walkthrough_fixture.clj b/test/walkthrough_fixture.clj
index 4b814822029c913e38151ca53848d1c64fb58373..a487ff1ef8548580577914fb33f321586859c9af 100644
--- a/test/walkthrough_fixture.clj
+++ b/test/walkthrough_fixture.clj
@@ -1,11 +1,18 @@
(ns test.walkthrough-fixture
"Launch a local slug server with mock OAuth and seed browser-friendly demo data."
(:require [babashka.fs :as fs]
+ [babashka.process :as p]
[cheshire.core :as json]
[clojure.string :as str]
[test.common :as common]
[test.oauth :as oauth]))
+(def ^:private fixture-data-dir "fixture-data")
+;; Prefer the same port as `bb dev` / `bb watch`; fall back if something else is listening.
+(def ^:private preferred-slug-port 8080)
+;; First `cargo watch` compile can exceed a release-binary startup; allow several minutes.
+(def ^:private health-wait-ms 300000)
+
(defn- assert! [pred msg]
(when-not pred
(throw (ex-info msg {}))))
@@ -85,49 +92,87 @@
:thread_url (str base-url "/r/" room-short "/" room-slug "/t/walkthrough-thread")
:garden_url (str base-url "/r/" room-short "/" room-slug "/~/secret/item")}}))
+(defn- rebase-fixture-summary [saved current-base-url current-google-url current-data-dir]
+ (let [inner (:summary saved)
+ room (:room inner)
+ rs (:short room)
+ lg (:slug room)]
+ (assoc saved
+ :base_url current-base-url
+ :mock_google_url current-google-url
+ :data_dir (str current-data-dir)
+ :summary (assoc inner
+ :room (assoc room
+ :url (str current-base-url "/r/" rs "/" lg)
+ :thread_url (str current-base-url "/r/" rs "/" lg "/t/walkthrough-thread")
+ :garden_url (str current-base-url "/r/" rs "/" lg "/~/secret/item"))))))
+
+(defn- fixture-log-present? [data-dir]
+ (let [p (fs/path data-dir "events.jsonl")]
+ (and (fs/exists? p) (pos? (fs/size p)))))
+
+(defn- load-or-seed-summary!
+ [base-url google-url data-dir summary-path]
+ (if (and (fixture-log-present? data-dir) (fs/exists? summary-path))
+ (let [saved (json/parse-string (slurp summary-path) true)
+ rebased (rebase-fixture-summary saved base-url google-url data-dir)]
+ (spit summary-path (json/generate-string rebased {:pretty true}))
+ (println "")
+ (println "reusing fixture-data/ (delete the directory for a fresh seed)")
+ rebased)
+ (let [seeded (seed-demo! base-url)
+ s {:base_url base-url
+ :mock_google_url google-url
+ :data_dir (str data-dir)
+ :summary seeded}]
+ (spit summary-path (json/generate-string s {:pretty true}))
+ s)))
+
(defn run-fixture [& _args]
- (let [build (common/run-cargo-build-release! ["slugsocial-server"])
- _ (assert! (zero? (:exit build)) "cargo build --release failed")
- server-bin "target/release/slugsocial-server"
- tmp-dir (str (fs/create-temp-dir {:prefix "slug-walkthrough-"}))
- slug-port (common/pick-port)
+ (let [data-dir (str (fs/absolutize (fs/path (fs/cwd) fixture-data-dir)))
+ slug-port (common/pick-port-prefer preferred-slug-port)
google-port (common/pick-port)
base-url (str "http://127.0.0.1:" slug-port)
google-url (str "http://127.0.0.1:" google-port)
- stable-dir "/tmp/slug-walkthrough-fixture"
- summary-path (str stable-dir "/summary.json")
+ summary-path (str (fs/path data-dir "summary.json"))
!server (atom nil)
!google (atom nil)
- server-env (common/slug-server-env tmp-dir base-url google-url slug-port)]
+ server-env (merge (common/slug-server-env data-dir base-url google-url slug-port)
+ {"RUST_LOG" "info"})
+ watch-cmd [(common/cargo-bin) "watch"
+ "-x" "run -p slugsocial-server"
+ "-w" "server/src"
+ "-w" "server/static"
+ "-w" "types/src"]]
(try
- (fs/create-dirs stable-dir)
+ (fs/create-dirs data-dir)
(reset! !google
(oauth/start-mock-google google-port
:google-users ["google-user-alice" "google-user-bob"]))
- (reset! !server (common/start-server server-bin server-env))
- (assert! (common/wait-for-server base-url 10000) "server did not become healthy")
- (let [seeded (seed-demo! base-url)
- summary {:base_url base-url
- :mock_google_url google-url
- :data_dir tmp-dir
- :summary seeded}]
- (spit summary-path (json/generate-string summary {:pretty true}))
+ (println "")
+ (println "starting cargo-watch (first compile may take a while)…")
+ (flush)
+ (reset! !server (p/process watch-cmd {:inherit true :env server-env}))
+ (assert! (common/wait-for-server base-url health-wait-ms) "server did not become healthy")
+ (let [summary (load-or-seed-summary! base-url google-url data-dir summary-path)]
(println "")
(println "walkthrough fixture ready")
(println (str " base url: " base-url))
(println (str " room page: " (get-in summary [:summary :room :url])))
(println (str " thread page: " (get-in summary [:summary :room :thread_url])))
(println (str " garden page: " (get-in summary [:summary :room :garden_url])))
+ (println (str " data dir: " data-dir))
(println (str " summary json: " summary-path))
(println "")
(println "seeded users")
(println " alice / bob via mock OAuth")
(println "")
+ (println "editing server/src or server/static reloads the server; data persists in fixture-data/")
+ (println "")
(println "press Ctrl-C to stop")
(flush)
(while true
(Thread/sleep 1000)))
(finally
(when-some [s @!server] (common/kill-server s))
- (when-some [g @!google] ((:stop-fn g)))
- (fs/delete-tree tmp-dir)))))
+ (when-some [g @!google] ((:stop-fn g)))))))
B — c_b7cc67300477 (tommy-mor)
message
[9e3d989b] Add test that 25 spanning-tree votes with perfect ratios sort the alphabet. Demonstrates rank centrality recovers the true order from a random connected comparison graph when each vote encodes item strength as (idx+1). Co-authored-by: Cursor <cursoragent@cursor.com>
diff preview
diff --git a/server/src/ranking.rs b/server/src/ranking.rs
index c9b4d5d89d2f22cf53a5b43eb979e19a11bc89a1..93cb4c9f5887a1e598cdc9d648751055f618adcc 100644
--- a/server/src/ranking.rs
+++ b/server/src/ranking.rs
@@ -369,6 +369,48 @@ mod tests {
assert_eq!(comp1, vec!["c", "d"]);
}
+ /// A random spanning tree over 26 items needs only n−1 = 25 pairwise votes.
+ /// When each vote uses the "perfect" ratio (strength left : strength right =
+ /// (idx_left+1) : (idx_right+1)), rank centrality recovers the true order.
+ /// See `rank-eric.py` (Eric's demo of Negahban–Oh–Shah rank centrality).
+ #[test]
+ fn twenty_five_random_votes_perfect_ratios_sort_alphabet() {
+ use rand::seq::SliceRandom;
+
+ const N: usize = 26;
+ let letters: Vec<char> = (0..N).map(|i| char::from(b'a' + i as u8)).collect();
+
+ let mut rng = rand::thread_rng();
+ let mut perm: Vec<usize> = (0..N).collect();
+ perm.shuffle(&mut rng);
+
+ let mut g = mk_group();
+ for k in 1..N {
+ let i = *perm[..k].choose(&mut rng).unwrap();
+ let j = perm[k];
+ let (a, b) = (letters[i], letters[j]);
+ g.apply_vote(vote(
+ k as i64,
+ &a.to_string(),
+ &b.to_string(),
+ (i + 1) as i32,
+ (j + 1) as i32,
+ ));
+ }
+
+ let ranked = ranked_items(&g);
+ assert_eq!(ranked.len(), N);
+ for (rank, item) in ranked.iter().enumerate() {
+ let expected = char::from(b'a' + (N - 1 - rank) as u8);
+ assert_eq!(
+ item.item.as_str(),
+ expected.to_string(),
+ "rank {rank}: expected '{expected}', got '{}'",
+ item.item.as_str()
+ );
+ }
+ }
+
#[test]
fn subset_ranking_ranks_within_component_only() {
let mut g = mk_group();
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