import { test } from '@japa/runner'
import { cut, uncovered } from '#lib/seed/plan'

test.group('seed plan', () => {
  test('plans only what earlier ranges leave uncovered', ({ assert }) => {
    // a.b.ath on 2026-10-06: test ranges around 49.8B and a plan below them; the backfill ends at 58.4B.
    assert.deepEqual(uncovered(1, 100, [[40, 50], [10, 20], [45, 60]]), [[1, 9], [21, 39], [61, 100]])
    assert.deepEqual(uncovered(1, 100, []), [[1, 100]])
    assert.deepEqual(uncovered(1, 100, [[0, 200]]), [])
    assert.deepEqual(uncovered(10, 20, [[1, 5], [25, 30]]), [[10, 20]])
  })

  test('cuts gaps into ranges, newest first', ({ assert }) => {
    assert.deepEqual(cut([[1, 9], [61, 100]], 25), [[76, 100], [61, 75], [1, 9]])
  })
})