| 10 | ) |
| 11 | |
| 12 | func TestBackoff_NextDelay(t *testing.T) { |
| 13 | t.Parallel() |
| 14 | |
| 15 | tests := map[string]struct { |
| 16 | minBackoff time.Duration |
| 17 | maxBackoff time.Duration |
| 18 | expectedRanges [][]time.Duration |
| 19 | }{ |
| 20 | "exponential backoff with jitter honoring min and max": { |
| 21 | minBackoff: 100 * time.Millisecond, |
| 22 | maxBackoff: 10 * time.Second, |
| 23 | expectedRanges: [][]time.Duration{ |
| 24 | {100 * time.Millisecond, 200 * time.Millisecond}, |
| 25 | {200 * time.Millisecond, 400 * time.Millisecond}, |
| 26 | {400 * time.Millisecond, 800 * time.Millisecond}, |
| 27 | {800 * time.Millisecond, 1600 * time.Millisecond}, |
| 28 | {1600 * time.Millisecond, 3200 * time.Millisecond}, |
| 29 | {3200 * time.Millisecond, 6400 * time.Millisecond}, |
| 30 | {6400 * time.Millisecond, 10000 * time.Millisecond}, |
| 31 | {6400 * time.Millisecond, 10000 * time.Millisecond}, |
| 32 | }, |
| 33 | }, |
| 34 | "exponential backoff with max equal to the end of a range": { |
| 35 | minBackoff: 100 * time.Millisecond, |
| 36 | maxBackoff: 800 * time.Millisecond, |
| 37 | expectedRanges: [][]time.Duration{ |
| 38 | {100 * time.Millisecond, 200 * time.Millisecond}, |
| 39 | {200 * time.Millisecond, 400 * time.Millisecond}, |
| 40 | {400 * time.Millisecond, 800 * time.Millisecond}, |
| 41 | {400 * time.Millisecond, 800 * time.Millisecond}, |
| 42 | }, |
| 43 | }, |
| 44 | "exponential backoff with max equal to the end of a range + 1": { |
| 45 | minBackoff: 100 * time.Millisecond, |
| 46 | maxBackoff: 801 * time.Millisecond, |
| 47 | expectedRanges: [][]time.Duration{ |
| 48 | {100 * time.Millisecond, 200 * time.Millisecond}, |
| 49 | {200 * time.Millisecond, 400 * time.Millisecond}, |
| 50 | {400 * time.Millisecond, 800 * time.Millisecond}, |
| 51 | {800 * time.Millisecond, 801 * time.Millisecond}, |
| 52 | {800 * time.Millisecond, 801 * time.Millisecond}, |
| 53 | }, |
| 54 | }, |
| 55 | "exponential backoff with max equal to the end of a range - 1": { |
| 56 | minBackoff: 100 * time.Millisecond, |
| 57 | maxBackoff: 799 * time.Millisecond, |
| 58 | expectedRanges: [][]time.Duration{ |
| 59 | {100 * time.Millisecond, 200 * time.Millisecond}, |
| 60 | {200 * time.Millisecond, 400 * time.Millisecond}, |
| 61 | {400 * time.Millisecond, 799 * time.Millisecond}, |
| 62 | {400 * time.Millisecond, 799 * time.Millisecond}, |
| 63 | }, |
| 64 | }, |
| 65 | "min backoff is equal to max": { |
| 66 | minBackoff: 100 * time.Millisecond, |
| 67 | maxBackoff: 100 * time.Millisecond, |
| 68 | expectedRanges: [][]time.Duration{ |
| 69 | {100 * time.Millisecond, 100 * time.Millisecond}, |