feat: v0.7.0 — server-authoritative sim engine: tick-on-read clock (time-scale + pause via POST /api/sim), contract expiry + market spawn, analytic plane movement/finalization

e2e/sim.spec.ts

@@ -0,0 +1,153 @@
+import { test, expect, type Page } from '@playwright/test';
+
+// v0.7.0 sim engine against the live origin: tick-on-read clock advance at a
+// raised time scale, pause freezing, contract expiry (via the FLIGHT_TEST_HOOKS
+// hook enabled in docker-compose.yml), and market top-up.
+
+// Must match lib/sim/engine.ts — kept in sync manually (same pattern as MIN_ZOOM/MAX_ZOOM in map.spec.ts).
+const MAX_TICK_ELAPSED_MS = 2_000;
+const SCALE = 60;
+const MAX_DELTA_PER_TICK = MAX_TICK_ELAPSED_MS * SCALE; // 120_000 game ms per tick at scale 60
+// Must match MARKET_TARGET_OPEN_CONTRACTS in lib/game/seed.ts.
+const MARKET_TARGET = 10;
+
+interface SimState {
+  clockMs: number;
+  timeScale: number;
+  paused: boolean;
+}
+
+interface StateBody {
+  account: { cash: number; reputation: number };
+  simState: SimState;
+  planes: Array<Record<string, unknown>>;
+  contracts: Array<{ id: string; status: string; deadlineSimTime: number }>;
+}
+
+const sleep = (ms: number) => new Promise((r) => setTimeout(r, ms));
+
+async function postSim(page: Page, body: unknown) {
+  return page.request.post('/api/sim', { data: body });
+}
+
+async function getState(page: Page): Promise<StateBody> {
+  const res = await page.request.get('/api/state');
+  expect(res.status()).toBe(200);
+  return (await res.json()) as StateBody;
+}
+
+// Leave the live instance in a sane state for the other specs (scale 1, running).
+test.afterEach(async ({ page }) => {
+  const res = await postSim(page, { timeScale: 1, paused: false });
+  expect(res.status()).toBe(200);
+});
+
+test('timeScale 60 advances the clock by roughly real-time × 60 between polls', async ({ page }) => {
+  const post = await postSim(page, { timeScale: SCALE });
+  expect(post.status()).toBe(200);
+  const s1 = (await post.json()) as SimState;
+  expect(s1.timeScale).toBe(SCALE);
+  expect(s1.paused).toBe(false);
+
+  let prev = s1.clockMs;
+  for (let i = 0; i < 3; i++) {
+    await sleep(1_000); // one real second ≈ 60 game seconds at scale 60 — well under the clamp
+    const body = await getState(page);
+    const now = body.simState.clockMs;
+    expect(now).toBeGreaterThan(prev); // strictly advances while actively polled
+    expect(now - prev).toBeGreaterThanOrEqual(30_000); // ≥ ~500 ms real × 60
+    expect(now - prev).toBeLessThanOrEqual(MAX_DELTA_PER_TICK + 60); // clamp bounds each tick
+    prev = now;
+  }
+});
+
+test('paused freezes the clock exactly across polls', async ({ page }) => {
+  const post = await postSim(page, { timeScale: SCALE, paused: true });
+  expect(post.status()).toBe(200);
+  const s1 = (await post.json()) as SimState;
+  expect(s1.paused).toBe(true);
+
+  for (let i = 0; i < 3; i++) {
+    await sleep(500);
+    const body = await getState(page);
+    expect(body.simState.clockMs).toBe(s1.clockMs); // frozen — no advance while paused
+  }
+});
+
+test('an open contract past its short deadline expires and the market stays topped up', async ({ page }) => {
+  test.setTimeout(60_000);
+
+  const before = await getState(page);
+  const victim = before.contracts.find((c) => c.status === 'open');
+  expect(victim).toBeDefined(); // steady state always has open contracts
+
+  // Test-only hook (FLIGHT_TEST_HOOKS=1 in docker-compose): move an existing open
+  // contract's deadline ~10 game-seconds out so expiry is observable at scale 60.
+  const hook = await page.request.post('/api/test/expire-contract', { data: { contractId: victim!.id } });
+  expect(hook.status()).toBe(200);
+  const moved = (await hook.json()) as { id: string; deadlineSimTime: number };
+  expect(moved.id).toBe(victim!.id);
+
+  await postSim(page, { timeScale: SCALE });
+
+  let expiredBody: StateBody | undefined;
+  await expect
+    .poll(async () => {
+      const body = await getState(page);
+      if (body.contracts.find((c) => c.id === moved.id)?.status === 'expired') expiredBody = body;
+      return !!expiredBody;
+    }, { timeout: 30_000, message: 'waiting for the short-deadline contract to expire' })
+    .toBe(true);
+
+  const after = expiredBody!;
+  expect(after.contracts.find((c) => c.id === moved.id)?.status).toBe('expired');
+  // Expired contracts leave the available set…
+  expect(after.contracts.filter((c) => c.status === 'open').some((c) => c.id === moved.id)).toBe(false);
+  // …and spawn tops the market back up to the target — never below it.
+  const openCount = after.contracts.filter((c) => c.status === 'open').length;
+  expect(openCount).toBeGreaterThanOrEqual(MARKET_TARGET);
+});
+
+test('the hook can also create a fresh short-deadline contract, which then expires', async ({ page }) => {
+  test.setTimeout(60_000);
+
+  const created = await page.request.post('/api/test/expire-contract');
+  expect(created.status()).toBe(201);
+  const c = (await created.json()) as { id: string; status: string };
+  expect(c.status).toBe('open');
+
+  await postSim(page, { timeScale: SCALE });
+
+  let expiredBody: StateBody | undefined;
+  await expect
+    .poll(async () => {
+      const body = await getState(page);
+      if (body.contracts.find((x) => x.id === c.id)?.status === 'expired') expiredBody = body;
+      return !!expiredBody;
+    }, { timeout: 30_000, message: 'waiting for the hook-created contract to expire' })
+    .toBe(true);
+
+  const openCount = expiredBody!.contracts.filter((x) => x.status === 'open').length;
+  expect(openCount).toBeGreaterThanOrEqual(MARKET_TARGET); // top-up held after this expiry too
+});
+
+test('POST /api/sim validates and clamps its input', async ({ page }) => {
+  const clampHigh = await postSim(page, { timeScale: 500 });
+  expect(clampHigh.status()).toBe(200);
+  expect(((await clampHigh.json()) as SimState).timeScale).toBe(60);
+
+  const clampLow = await postSim(page, { timeScale: 0.1 });
+  expect(clampLow.status()).toBe(200);
+  expect(((await clampLow.json()) as SimState).timeScale).toBe(1);
+
+  for (const body of [{ timeScale: 'fast' }, { paused: 'yes' }, { bogus: 1 }]) {
+    const res = await postSim(page, body);
+    expect(res.status()).toBe(400);
+  }
+  const notJson = await page.request.post('/api/sim', { data: 'nope{' });
+  expect(notJson.status()).toBe(400);
+
+  // Empty body is a valid no-op (just ticks + returns current state).
+  const empty = await postSim(page, {});
+  expect(empty.status()).toBe(200);
+});