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

app/api/sim/route.test.ts

@@ -0,0 +1,89 @@
+import fs from 'node:fs/promises';
+import os from 'node:os';
+import path from 'node:path';
+import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import { POST } from './route';
+
+let dir: string;
+
+beforeAll(async () => {
+  // Same pattern as app/api/state/route.test.ts: point the DB singleton at a
+  // throwaway file (fresh module registry per test file → fresh singleton).
+  dir = await fs.mkdtemp(path.join(os.tmpdir(), 'flight-sim-api-'));
+  process.env.FLIGHT_DB_PATH = path.join(dir, 'sim.db');
+});
+
+afterAll(async () => {
+  delete process.env.FLIGHT_DB_PATH;
+  await fs.rm(dir, { recursive: true, force: true });
+});
+
+const post = (body: unknown) => POST(new Request('http://localhost/api/sim', { method: 'POST', body: JSON.stringify(body) }));
+const postRaw = (text: string) => POST(new Request('http://localhost/api/sim', { method: 'POST', body: text }));
+
+describe('POST /api/sim', () => {
+  it('returns the current simState for an empty body (tick + no-op)', async () => {
+    const res = await post({});
+    expect(res.status).toBe(200);
+    const body = (await res.json()) as { clockMs: number; timeScale: number; paused: boolean };
+    expect(typeof body.clockMs).toBe('number');
+    expect(body.timeScale).toBe(1); // seeded default
+    expect(body.paused).toBe(false);
+  });
+
+  it('sets and clamps timeScale into [1, 60]', async () => {
+    const hi = await post({ timeScale: 500 });
+    expect(hi.status).toBe(200);
+    expect(((await hi.json()) as { timeScale: number }).timeScale).toBe(60);
+
+    const lo = await post({ timeScale: 0.1 });
+    expect(lo.status).toBe(200);
+    expect(((await lo.json()) as { timeScale: number }).timeScale).toBe(1);
+
+    const mid = await post({ timeScale: 37 });
+    expect(mid.status).toBe(200);
+    expect(((await mid.json()) as { timeScale: number }).timeScale).toBe(37);
+
+    // Restore the default for later tests.
+    await post({ timeScale: 1 });
+  });
+
+  it('toggles paused and freezes the clock across ticks', async () => {
+    const pause = await post({ paused: true });
+    expect(pause.status).toBe(200);
+    expect(((await pause.json()) as { paused: boolean }).paused).toBe(true);
+
+    // Two reads while paused → identical clock (tick-on-read advances nothing).
+    const a = await post({});
+    const b = await post({});
+    expect(((await a.json()) as { clockMs: number }).clockMs).toBe(
+      ((await b.json()) as { clockMs: number }).clockMs,
+    );
+
+    const resume = await post({ paused: false });
+    expect(resume.status).toBe(200);
+    expect(((await resume.json()) as { paused: boolean }).paused).toBe(false);
+  });
+
+  it('applies both fields in one call', async () => {
+    const res = await post({ timeScale: 60, paused: true });
+    expect(res.status).toBe(200);
+    const body = (await res.json()) as { timeScale: number; paused: boolean };
+    expect(body.timeScale).toBe(60);
+    expect(body.paused).toBe(true);
+    await post({ timeScale: 1, paused: false }); // restore
+  });
+
+  it('rejects invalid input with 400', async () => {
+    for (const body of [{ timeScale: 'fast' }, { timeScale: Infinity }, { paused: 'yes' }, { bogus: 1 }]) {
+      const res = await post(body);
+      expect(res.status).toBe(400);
+      expect(((await res.json()) as { error: string }).error).toBeTruthy();
+    }
+
+    for (const text of ['nope{', '[1,2]', '"str"', 'null']) {
+      const res = await postRaw(text);
+      expect(res.status).toBe(400);
+    }
+  });
+});