Files
ssessesse-ki-battle/tests/analytics-sampling.test.ts
T

37 lines
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TypeScript

import { test } from 'node:test';
import assert from 'node:assert/strict';
import type { AnalyticsStore } from '../src/server/analytics-store.js';
import { Analytics } from '../src/server/analytics.js';
import { ManualClock } from './helpers.js';
test('ten-second observations preserve a brief peak in one five-minute write and flush the final partial interval', async () => {
const clock = new ManualClock();
const writes: Parameters<AnalyticsStore['sample']>[] = [];
const store = {
sample: async (...args: Parameters<AnalyticsStore['sample']>) => { writes.push(args); },
cleanup: async () => {},
} as unknown as AnalyticsStore;
const analytics = new Analytics(store, clock);
try {
analytics.states.set('visitor', { visible: true, lastAt: clock.now(), metadata: { device: 'pc', browser: 'Other', source: 'direct_or_unknown', invitation: false } });
await clock.advance(290000);
assert.equal(writes.length, 0);
assert.equal(analytics.live().active, 0);
await clock.advance(10000);
assert.equal(writes.length, 1);
assert.equal(writes[0][1].active, 1);
assert.equal(writes[0][4], 30);
await clock.advance(300000);
assert.equal(writes.length, 2);
assert.equal(writes[1][1].active, 0);
assert.equal(writes[1][4], 30);
await clock.advance(20000);
assert.equal(writes.length, 2);
await analytics.close();
assert.equal(writes.length, 3);
assert.equal(writes[2][4], 2);
await analytics.close();
assert.equal(writes.length, 3);
} finally { await analytics.close(); }
});