Files
portal/tests/jetstream.rs
T
Bendik Aagaard LynghaugandClaude Opus 5 26c1762dfa
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A reply to a case mail becomes a note on its record
Whatever reads the mailbox publishes on portal.mail.received; portal
appends the note after checking the record exists in a bucket this
site has and the sender is the address the record itself holds. A
note never moves a case: a mailbox is the one door anyone may knock
on, so it cannot drive a state machine even if someone forges their
way past the checks. The desks show the conversation beside the case.

Tested: the address parser, every refusal (a stranger, no address to
compare, an empty reply, the same reply twice, an unknown contract),
and the whole path through a real JetStream - the note lands, the
state does not move, and no event is written.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-24 21:26:57 +02:00

96 lines
5.0 KiB
Rust

//! The one test that meets a real JetStream: a submission becomes an
//! aggregate, a desk move is accepted, an undeclared move is refused,
//! and the record reads back from its own event log. Everything else
//! in the suite replays in memory; this is what proves the store, the
//! event log and the projection agree with each other.
//!
//! Runs only when `PORTAL_TEST_NATS_URL` points at a JetStream (CI
//! starts a throwaway one, see `.gitea/workflows/test.yml`); without
//! it the test passes as skipped, so `cargo test` stays green offline.
#![cfg(feature = "ssr")]
use portal::aggregates::{self, parse_aggregates_yaml, TransitionError};
use portal::answers::{store_answer, Answer};
use portal::events::store::{ensure_stream, load_events};
use serde_json::json;
#[tokio::test]
async fn a_submission_is_created_moved_refused_and_read_back_through_the_real_engine() {
let Ok(url) = std::env::var("PORTAL_TEST_NATS_URL") else {
eprintln!("skipped: PORTAL_TEST_NATS_URL is not set");
return;
};
let js = async_nats::jetstream::new(async_nats::connect(&url).await.expect("connect"));
ensure_stream(&js).await.expect("event stream");
// A bucket of its own per run, so reruns and parallel runs never
// read each other's records.
let bucket = format!("it_{}", chrono::Utc::now().timestamp_millis());
let schemas = parse_aggregates_yaml(&format!(
"aggregates:\n - bucket: {bucket}\n initial: open\n states:\n open: {{ event: received }}\n quoted: {{ event: quoted }}\n won: {{ event: won }}\n lost: {{ event: lost }}\n transitions:\n open: [quoted, lost]\n quoted: [won, lost]\n"
))
.expect("schema");
let schema = &schemas[&bucket];
let now = chrono::Utc::now().timestamp_millis();
// The submission: a KV record in the initial state, plus the first event.
store_answer(&js, &schemas, &bucket, "rec-1".into(), "/", "Hire us", &json!({"email": "a@b.example"}), now)
.await
.expect("store");
let store = js.get_key_value(&bucket).await.expect("bucket exists");
let stored: Answer = serde_json::from_slice(&store.get("rec-1").await.unwrap().expect("record")).unwrap();
assert_eq!(stored.state, "open");
assert_eq!(stored.responses["email"], "a@b.example");
// A desk move the machine allows.
let moved = aggregates::transition(&js, schema, "rec-1", "quoted", json!({"by": "test"}), now + 1)
.await
.expect("open -> quoted is declared");
assert_eq!(moved.state, "quoted");
// Moves the machine does not allow are refused, whoever asks.
let back = aggregates::transition(&js, schema, "rec-1", "open", json!({}), now + 2).await;
assert!(matches!(back, Err(TransitionError::DisallowedTransition { .. })), "{back:?}");
let skip = aggregates::transition(&js, schema, "rec-1", "won", json!({}), now + 2).await;
assert!(skip.is_ok(), "quoted -> won is declared: {skip:?}");
let nobody = aggregates::transition(&js, schema, "rec-9", "quoted", json!({}), now + 3).await;
assert!(matches!(nobody, Err(TransitionError::UnknownAggregate)), "{nobody:?}");
// The record reads back from its own event log, in the state the
// accepted moves left it, with a sequence that moved forward.
let events = load_events(&js, &bucket, "rec-1").await.expect("events");
assert_eq!(events.len(), 3, "received, quoted, won");
let replayed = aggregates::replay(schema, "rec-1", &events).expect("replays");
assert_eq!(replayed.state, "won");
assert!(replayed.sequence > moved.sequence);
// A reply to the mail this record was sent becomes a note on it,
// through the same store the desks read - and moves nothing: the
// record is still where the desk left it.
let mut record: Answer = serde_json::from_slice(&store.get("rec-1").await.unwrap().expect("record")).unwrap();
let reply = portal::mail::Incoming {
v: portal::mail::CONTRACT,
id: "mail-1".into(),
bucket: bucket.clone(),
record: "rec-1".into(),
from: "A <A@B.example>".into(),
subject: "Re: your enquiry".into(),
text: "Thursday suits us.".into(),
received_ms: now + 10,
};
let note = portal::mail::note_for(&reply, &record).expect("the address matches the record");
record.notes.push(note);
store.put("rec-1", serde_json::to_vec(&record).unwrap().into()).await.expect("note stored");
let read_back: Answer = serde_json::from_slice(&store.get("rec-1").await.unwrap().expect("record")).unwrap();
assert_eq!(read_back.notes.len(), 1);
assert_eq!(read_back.notes[0].text, "Thursday suits us.");
assert_eq!(read_back.notes[0].from, "a@b.example");
assert_eq!(read_back.state, "quoted", "a reply is a note, never a decision");
// The same reply read twice adds nothing.
assert!(portal::mail::note_for(&reply, &read_back).is_err());
// And the event log is untouched by it.
let after = load_events(&js, &bucket, "rec-1").await.expect("events");
assert_eq!(after.len(), 3, "a note writes no event");
}