65 lines
2.4 KiB
TypeScript
65 lines
2.4 KiB
TypeScript
import { describe, expect, it } from 'vitest';
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import { GAME_TICKS_PER_TURN, GameClock, MAX_SAFE_GAME_TICK } from '../src/time/GameClock.js';
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describe('GameClock', () => {
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const baseTime = new Date('2042-01-01T00:00:00.000Z');
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it('projects the fixed Ref turn tick and ignores wall time in manual mode', () => {
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const clock = new GameClock({
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baseTime,
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tick: GAME_TICKS_PER_TURN,
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mode: 'manual',
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wallAnchor: new Date('2026-01-01T00:00:00.000Z'),
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turnSeconds: 3_600,
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});
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expect(clock.ticksPerSecond).toBe(10_000);
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expect(clock.nowTick(new Date('2126-01-01T00:00:00.000Z'))).toBe(GAME_TICKS_PER_TURN);
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expect(clock.now(new Date('2126-01-01T00:00:00.000Z')).toISOString()).toBe('2042-01-01T01:00:00.000Z');
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});
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it('accepts a large forward wall jump without losing tick precision', () => {
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const wallAnchor = new Date('2026-01-01T00:00:00.000Z');
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const clock = new GameClock({
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baseTime,
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tick: 0,
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mode: 'realtime',
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wallAnchor,
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turnSeconds: 7_200,
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});
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const jumped = new Date('2126-01-01T00:00:00.000Z');
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const tick = clock.nowTick(jumped);
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expect(Number.isSafeInteger(tick)).toBe(true);
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expect(clock.tickToDate(tick).getTime() - baseTime.getTime()).toBe(jumped.getTime() - wallAnchor.getTime());
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});
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it('does not rewind game time after a backward wall-clock correction', () => {
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const clock = new GameClock({
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baseTime,
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tick: GAME_TICKS_PER_TURN * 10,
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mode: 'realtime',
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wallAnchor: new Date('2026-01-02T00:00:00.000Z'),
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turnSeconds: 3_600,
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});
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expect(clock.nowTick(new Date('2025-01-01T00:00:00.000Z'))).toBe(GAME_TICKS_PER_TURN * 10);
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});
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it('projects near the safe tick boundary without unsafe intermediate multiplication', () => {
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const clock = new GameClock({
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baseTime: new Date(0),
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tick: 0,
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mode: 'manual',
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wallAnchor: new Date(0),
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turnSeconds: 7_200,
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});
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const tick = MAX_SAFE_GAME_TICK - (MAX_SAFE_GAME_TICK % clock.ticksPerSecond);
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const projected = clock.tickToDate(tick);
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expect(Number.isNaN(projected.getTime())).toBe(false);
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expect(clock.dateToTick(projected)).toBe(tick);
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});
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});
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