| 1 | // SPDX-License-Identifier: AGPL-3.0-or-later |
| 2 | |
| 3 | package worker_test |
| 4 | |
| 5 | import ( |
| 6 | "testing" |
| 7 | "time" |
| 8 | |
| 9 | "github.com/tenseleyFlow/shithub/internal/worker" |
| 10 | ) |
| 11 | |
| 12 | func TestBackoff_Doubles(t *testing.T) { |
| 13 | t.Parallel() |
| 14 | cases := []struct { |
| 15 | attempts int |
| 16 | want time.Duration |
| 17 | }{ |
| 18 | {1, 30 * time.Second}, |
| 19 | {2, 60 * time.Second}, |
| 20 | {3, 120 * time.Second}, |
| 21 | {4, 240 * time.Second}, |
| 22 | {5, 480 * time.Second}, |
| 23 | {6, 960 * time.Second}, |
| 24 | {7, 1920 * time.Second}, |
| 25 | {8, time.Hour}, // capped |
| 26 | {10, time.Hour}, // still capped |
| 27 | } |
| 28 | for _, c := range cases { |
| 29 | got := worker.Backoff(c.attempts, nil) |
| 30 | if got != c.want { |
| 31 | t.Errorf("Backoff(%d) = %v, want %v", c.attempts, got, c.want) |
| 32 | } |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | func TestBackoff_JitterStaysInBand(t *testing.T) { |
| 37 | t.Parallel() |
| 38 | const attempts = 4 |
| 39 | base := worker.Backoff(attempts, nil) |
| 40 | low := time.Duration(float64(base) * 0.8) |
| 41 | high := time.Duration(float64(base) * 1.2) |
| 42 | for i := 0; i < 100; i++ { |
| 43 | j := float64(i) / 100.0 |
| 44 | got := worker.Backoff(attempts, func() float64 { return j }) |
| 45 | if got < low || got >= high { |
| 46 | t.Fatalf("jitter %v: got %v, want in [%v, %v)", j, got, low, high) |
| 47 | } |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | func TestBackoff_NonPositiveAttemptsClampsToOne(t *testing.T) { |
| 52 | t.Parallel() |
| 53 | if got := worker.Backoff(0, nil); got != 30*time.Second { |
| 54 | t.Errorf("Backoff(0) = %v, want 30s", got) |
| 55 | } |
| 56 | if got := worker.Backoff(-5, nil); got != 30*time.Second { |
| 57 | t.Errorf("Backoff(-5) = %v, want 30s", got) |
| 58 | } |
| 59 | } |
| 60 |