82 lines
1.7 KiB
Go
82 lines
1.7 KiB
Go
package backoff
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import (
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"testing"
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"time"
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)
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func Test1(t *testing.T) {
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b := &Backoff{
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Min: 100 * time.Millisecond,
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Max: 10 * time.Second,
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Factor: 2,
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}
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equals(t, b.Duration(), 100*time.Millisecond)
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equals(t, b.Duration(), 200*time.Millisecond)
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equals(t, b.Duration(), 400*time.Millisecond)
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b.Reset()
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equals(t, b.Duration(), 100*time.Millisecond)
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}
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func Test2(t *testing.T) {
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b := &Backoff{
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Min: 100 * time.Millisecond,
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Max: 10 * time.Second,
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Factor: 1.5,
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}
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equals(t, b.Duration(), 100*time.Millisecond)
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equals(t, b.Duration(), 150*time.Millisecond)
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equals(t, b.Duration(), 225*time.Millisecond)
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b.Reset()
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equals(t, b.Duration(), 100*time.Millisecond)
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}
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func Test3(t *testing.T) {
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b := &Backoff{
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Min: 100 * time.Nanosecond,
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Max: 10 * time.Second,
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Factor: 1.75,
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}
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equals(t, b.Duration(), 100*time.Nanosecond)
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equals(t, b.Duration(), 175*time.Nanosecond)
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equals(t, b.Duration(), 306*time.Nanosecond)
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b.Reset()
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equals(t, b.Duration(), 100*time.Nanosecond)
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}
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func TestJitter(t *testing.T) {
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b := &Backoff{
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Min: 100 * time.Millisecond,
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Max: 10 * time.Second,
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Factor: 2,
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Jitter: true,
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}
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equals(t, b.Duration(), 100*time.Millisecond)
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between(t, b.Duration(), 100*time.Millisecond, 200*time.Millisecond)
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between(t, b.Duration(), 100*time.Millisecond, 400*time.Millisecond)
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b.Reset()
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equals(t, b.Duration(), 100*time.Millisecond)
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}
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func between(t *testing.T, actual, low, high time.Duration) {
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if actual < low {
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t.Fatalf("Got %s, Expecting >= %s", actual, low)
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}
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if actual > high {
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t.Fatalf("Got %s, Expecting <= %s", actual, high)
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}
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}
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func equals(t *testing.T, d1, d2 time.Duration) {
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if d1 != d2 {
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t.Fatalf("Got %s, Expecting %s", d1, d2)
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}
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}
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