import test from 'brittle'
import {
  recordSample,
  getHistory,
  pruneMissing,
  clearHistory,
} from '../server/services/stats-history.js'

test('stats history ring buffer', (t) => {
  clearHistory()
  const id = 'abc'
  for (let i = 0; i < 5; i++) {
    recordSample(id, { cpu: i, memory: i * 1000 })
  }
  const h = getHistory(id, { limit: 3 })
  t.is(h.length, 3)
  t.is(h[2].cpu, 4)
  pruneMissing([])
  t.is(getHistory(id).length, 0)
})