| 448 | } |
| 449 | |
| 450 | func TestRedisCounterDecrement(t *testing.T) { |
| 451 | ctx := context.Background() |
| 452 | redisURL := containers.Redis(t) |
| 453 | |
| 454 | // Create a Redis counter |
| 455 | ctr, err := newTestRedis(t, redisURL) |
| 456 | require.NoError(t, err) |
| 457 | defer func() { require.NoError(t, ctr.Close()) }() |
| 458 | |
| 459 | t.Run("BasicDecrement", func(t *testing.T) { |
| 460 | key := uid.New(uid.TestPrefix) |
| 461 | |
| 462 | // Start with initial value |
| 463 | _, err := ctr.Increment(ctx, key, 10) |
| 464 | require.NoError(t, err) |
| 465 | |
| 466 | // Decrement by 3 should return 7 |
| 467 | val, err := ctr.Decrement(ctx, key, 3) |
| 468 | require.NoError(t, err) |
| 469 | require.Equal(t, int64(7), val) |
| 470 | |
| 471 | // Decrement by 5 should return 2 |
| 472 | val, err = ctr.Decrement(ctx, key, 5) |
| 473 | require.NoError(t, err) |
| 474 | require.Equal(t, int64(2), val) |
| 475 | |
| 476 | // Decrement by 10 should return -8 (negative values allowed) |
| 477 | val, err = ctr.Decrement(ctx, key, 10) |
| 478 | require.NoError(t, err) |
| 479 | require.Equal(t, int64(-8), val) |
| 480 | }) |
| 481 | |
| 482 | t.Run("DecrementWithTTL", func(t *testing.T) { |
| 483 | key := uid.New(uid.TestPrefix) |
| 484 | ttl := 1 * time.Second |
| 485 | |
| 486 | // First decrement creates the key with TTL |
| 487 | val, err := ctr.Decrement(ctx, key, 5, ttl) |
| 488 | require.NoError(t, err) |
| 489 | require.Equal(t, int64(-5), val) // Starting from 0, decrement by 5 = -5 |
| 490 | |
| 491 | // Get the value immediately |
| 492 | val, err = ctr.Get(ctx, key) |
| 493 | require.NoError(t, err) |
| 494 | require.Equal(t, int64(-5), val) |
| 495 | |
| 496 | // Wait for the key to expire |
| 497 | time.Sleep(2 * time.Second) |
| 498 | |
| 499 | // Key should be gone or zero |
| 500 | val, err = ctr.Get(ctx, key) |
| 501 | require.NoError(t, err) |
| 502 | require.Equal(t, int64(0), val) |
| 503 | }) |
| 504 | |
| 505 | t.Run("ConcurrentDecrements", func(t *testing.T) { |
| 506 | key := uid.New(uid.TestPrefix) |
| 507 | numWorkers := 10 |