43 lines
1.7 KiB
JavaScript
43 lines
1.7 KiB
JavaScript
import { describe, it, expect } from 'vitest';
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import { createWorld, advance } from '../src/sim/world.js';
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import { playerKnownPrices } from '../src/sim/knowledge.js';
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import { playerSystem } from '../src/sim/player.js';
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describe('knowledge', () => {
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it('knows every planet at game start via the day-0 snapshot', () => {
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const w = createWorld('know-test', { systemCount: 10, npcCount: 5 });
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for (const planet of w.galaxy.planets) {
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const known = playerKnownPrices(w, planet.id);
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expect(known).not.toBeNull();
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expect(known.time).toBe(0);
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expect(known.ageDays).toBe(0);
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}
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});
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it('intel ages and refreshes as news travels', () => {
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const w = createWorld('know-test', { systemCount: 10, npcCount: 5 });
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const sys = playerSystem(w);
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const far = w.galaxy.planets.find((p) => w.hops[sys][p.systemId] >= 2);
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advance(w, 5);
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const known = playerKnownPrices(w, far.id);
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const hops = w.hops[sys][far.systemId];
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// freshest possible news is `hops` days old
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expect(known.ageDays).toBeGreaterThanOrEqual(hops - 1e-9);
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expect(known.ageDays).toBeLessThanOrEqual(hops + 1 + 1e-9);
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});
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it('local planet intel is near-live', () => {
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const w = createWorld('know-test', { systemCount: 10, npcCount: 5 });
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advance(w, 5);
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const local = w.galaxy.planets.find((p) => p.systemId === playerSystem(w));
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expect(playerKnownPrices(w, local.id).ageDays).toBeLessThanOrEqual(1);
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});
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it('the observe heartbeat marks co-located NPCs as seen', () => {
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const w = createWorld('know-test', { systemCount: 10, npcCount: 40 });
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advance(w, 10);
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// with 40 NPCs over 10 days, some must have passed through the player's system
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expect(w.player.seenNpcs.size).toBeGreaterThan(0);
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});
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});
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