import { describe, expect, it } from 'vitest';

import { retryBackoffDelays } from '#/_base/utils/retry';

describe('retryBackoffDelays', () => {
  it('starts at 500 milliseconds and doubles with up to 25 percent jitter', () => {
    const delays = retryBackoffDelays(3);

    expect(delays[0]).toBeGreaterThanOrEqual(500);
    expect(delays[0]).toBeLessThanOrEqual(625);
    expect(delays[1]).toBeGreaterThanOrEqual(1_000);
    expect(delays[1]).toBeLessThanOrEqual(1_250);
  });

  it('caps high-attempt backoff at 32 seconds plus up to 25 percent jitter', () => {
    const delays = retryBackoffDelays(10);

    expect(delays).toHaveLength(9);
    expect(delays[6]).toBeGreaterThanOrEqual(32_000);
    expect(delays[6]).toBeLessThanOrEqual(40_000);
    expect(delays[8]).toBeGreaterThanOrEqual(32_000);
    expect(delays[8]).toBeLessThanOrEqual(40_000);
  });
});