Add M2a plan: thirteen tasks, tests, fake server and recordings
The tasks build the inference path: emsha-backed SHA-256, inferproxy, config, a hand-written HTTP and SSE client, request building, delta assembly, the chat state machine, the thinking cap, the slot gate with retry, the startup self-test and on-device verification. Everything the tasks copy in was checked against a private reference implementation: the gate passes after each task in order, the timing tests pass repeatedly under CPU load, and the reference passes the self-test and all four device checks on straylight. Expected results for the recorded streams were derived by a separate script. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
Claude Fable 5.1
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//! Checks against the real server. Ignored unless run by `make verify-device`. Do not edit.
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//!
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//! They need two environment variables:
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//! BOXMAKER_INFERPROXY path to the built `inferproxy` binary
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//! BOXMAKER_UPSTREAM host:port of the llama-server router, for example straylight:11434
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//! and, optionally, BOXMAKER_MODEL (default ornith-1.5-35b-a3b). They use slot 0.
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//!
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//! They never touch the real `llama-server` process. The "server dies" test kills and restarts
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//! its own `inferproxy`.
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use loopd::config::Config;
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use loopd::llama::info::{CacheOutcome, cache_outcome};
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use loopd::llama::{ChatEvent, ChatMessage, ChatRequest, Client};
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use std::path::{Path, PathBuf};
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use std::process::{Child, Command};
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use std::sync::mpsc;
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use std::thread;
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use std::time::Duration;
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struct Proxy {
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child: Child,
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socket: PathBuf,
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}
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impl Proxy {
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fn start(socket: &Path) -> Proxy {
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let binary = std::env::var("BOXMAKER_INFERPROXY").expect("BOXMAKER_INFERPROXY is not set");
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let upstream = std::env::var("BOXMAKER_UPSTREAM").expect("BOXMAKER_UPSTREAM is not set");
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let child = Command::new(binary)
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.arg("--listen")
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.arg(socket)
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.arg("--upstream")
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.arg(upstream)
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.spawn()
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.expect("cannot start inferproxy");
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let mut proxy = Proxy {
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child,
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socket: socket.to_path_buf(),
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};
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for _ in 0..100 {
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if socket.exists() {
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return proxy;
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}
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thread::sleep(Duration::from_millis(20));
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}
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proxy.kill();
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panic!("inferproxy did not create {}", socket.display());
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}
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fn kill(&mut self) {
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let _ = self.child.kill();
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let _ = self.child.wait();
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}
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}
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impl Drop for Proxy {
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fn drop(&mut self) {
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self.kill();
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}
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}
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fn socket_path(name: &str) -> PathBuf {
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let dir = std::env::temp_dir().join(format!("loopd-device-{}-{name}", std::process::id()));
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std::fs::create_dir_all(&dir).unwrap();
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dir.join("infer.sock")
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}
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fn config(socket: &Path) -> Config {
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let model =
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std::env::var("BOXMAKER_MODEL").unwrap_or_else(|_| "ornith-1.5-35b-a3b".to_string());
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let text = format!(
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r#"
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[infer]
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socket = "{}"
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model = "{model}"
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[slots]
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main = 0
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background = 1
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[expect]
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template_sha256 = "f55f52930aa8bf44ab5cb85f99370fcc3c56e9a85640b812086d5330bce5d86b"
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n_ctx = 131072
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slots = 2
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"#,
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socket.display()
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);
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Config::parse(&text).unwrap()
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}
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fn user(text: &str) -> ChatMessage {
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// A different prompt each run, so that an earlier run's cache cannot make a check pass.
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let nonce = std::time::SystemTime::now()
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.duration_since(std::time::UNIX_EPOCH)
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.unwrap()
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.as_nanos();
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ChatMessage::User {
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content: format!("{text} (run {nonce})"),
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}
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}
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#[test]
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#[ignore = "needs the real server; run with make verify-device"]
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fn the_startup_self_test_passes() {
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let socket = socket_path("selftest");
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let _proxy = Proxy::start(&socket);
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let client = Client::new(config(&socket));
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loopd::selftest::run(&client, &mut |step| eprintln!("selftest: {step}")).unwrap();
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}
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#[test]
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#[ignore = "needs the real server; run with make verify-device"]
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fn a_capped_thinking_block_ends_and_the_answer_arrives() {
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let socket = socket_path("cap");
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let _proxy = Proxy::start(&socket);
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let mut cfg = config(&socket);
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cfg.limits.thinking_cap = 60;
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let client = Client::new(cfg);
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let ask = "Think at great length about how many ways 8 rooks fit on a chessboard without attacking \
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each other and with none on the main diagonal. Then answer in one sentence.";
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let req = ChatRequest {
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slot: 0,
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messages: vec![user(ask)],
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tools: vec![],
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thinking: true,
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};
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let mut capped = Vec::new();
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let done = client
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.chat_with_retry(&req, &mut |e| {
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if let ChatEvent::ThinkingCapped { tokens } = e {
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capped.push(*tokens);
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}
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})
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.unwrap();
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assert!(done.thinking_capped);
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assert_eq!(capped.len(), 1);
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assert!(capped[0] >= 60 && capped[0] < 70, "capped at {capped:?}");
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assert!(
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done.reasoning_tokens < 60 + 256,
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"thinking went on to {}",
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done.reasoning_tokens
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);
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assert!(
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done.content.is_some_and(|c| !c.trim().is_empty()),
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"an answer followed the forced end"
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);
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}
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#[test]
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#[ignore = "needs the real server; run with make verify-device"]
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fn a_request_survives_its_proxy_being_killed_and_restarted() {
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let socket = socket_path("restart");
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let mut proxy = Proxy::start(&socket);
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let mut cfg = config(&socket);
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cfg.limits.retry_backoff_ms = vec![1_500];
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let client = Client::new(cfg);
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let ask = "Write about 300 words on the history of cork.";
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let req = ChatRequest {
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slot: 0,
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messages: vec![user(ask)],
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tools: vec![],
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thinking: false,
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};
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let (tx, rx) = mpsc::channel();
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let worker = thread::spawn(move || {
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let mut retries = 0;
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let mut told = false;
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let result = client.chat_with_retry(&req, &mut |e| match e {
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ChatEvent::Content(_) if !told => {
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told = true;
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let _ = tx.send(());
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}
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ChatEvent::Retrying { .. } => retries += 1,
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_ => {}
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});
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(result, retries)
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});
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rx.recv_timeout(Duration::from_secs(120))
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.expect("no content arrived");
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proxy.kill(); // the stream dies in the middle of the answer
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thread::sleep(Duration::from_millis(300));
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let _proxy = Proxy::start(&proxy.socket);
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let (result, retries) = worker.join().unwrap();
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let done = result.expect("the retry should have succeeded");
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assert!(retries >= 1, "the request was retried");
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assert!(
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done.content
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.is_some_and(|c| c.split_whitespace().count() > 100)
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);
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}
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#[test]
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#[ignore = "needs the real server; run with make verify-device"]
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fn a_second_turn_reuses_the_first_turns_cache() {
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let socket = socket_path("cache");
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let _proxy = Proxy::start(&socket);
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let client = Client::new(config(&socket));
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let mut messages = vec![user(
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"What is 17 * 23? Think briefly, then answer in one short sentence.",
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)];
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let req = ChatRequest {
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slot: 0,
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messages: messages.clone(),
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tools: vec![],
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thinking: true,
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};
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let turn1 = client.chat_with_retry(&req, &mut |_| {}).unwrap();
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assert!(
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turn1.reasoning_content.is_some(),
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"this check is about replaying a thinking block"
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);
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messages.push(ChatMessage::Assistant {
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content: turn1.content.clone(),
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reasoning_content: turn1.reasoning_content.clone(),
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tool_calls: turn1.tool_calls.clone(),
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});
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messages.push(user("And 17 * 24?"));
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let req = ChatRequest {
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slot: 0,
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messages,
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tools: vec![],
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thinking: true,
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};
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let turn2 = client.chat_with_retry(&req, &mut |_| {}).unwrap();
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assert_eq!(
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cache_outcome(&turn1.timings, &turn2.timings),
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CacheOutcome::Hit,
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"{:?} then {:?}",
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turn1.timings,
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turn2.timings
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);
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}
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