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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package interval
import (
"sort"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestBackoffInterval(t *testing.T) {
t.Run("with default backoffs", func(t *testing.T) {
boff := NewBackoffTimer()
assert.Equal(t, boff.backoffs, defaultBackoffs)
assert.Zero(t, boff.backoffLevel)
assert.Zero(t, boff.lastInterval)
assert.Equal(t, time.Duration(0), boff.calculateInterval())
assert.True(t, boff.IntervalElapsed())
i := 1
for ; i < len(defaultBackoffs); i++ {
boff.IncreaseInterval()
assert.False(t, boff.IntervalElapsed())
assert.Equal(t, i, boff.backoffLevel)
assert.Equal(t, defaultBackoffs[i], boff.calculateInterval())
}
boff.IncreaseInterval()
assert.False(t, boff.IntervalElapsed())
assert.Equal(t, i, boff.backoffLevel)
assert.Equal(t, defaultBackoffs[len(defaultBackoffs)-1], boff.calculateInterval())
})
t.Run("with custom backoffs", func(t *testing.T) {
var (
durations = []time.Duration{time.Second, time.Nanosecond, time.Millisecond}
sorted = make([]time.Duration, len(durations))
)
copy(sorted, durations)
sort.Slice(sorted, func(i, j int) bool {
return sorted[i] < sorted[j]
})
boff := NewBackoffTimer(durations...)
assert.Equal(t, boff.backoffs, sorted)
assert.True(t, boff.IntervalElapsed())
assert.Equal(t, sorted[0], boff.calculateInterval())
boff.IncreaseInterval()
time.Sleep(time.Millisecond)
assert.True(t, boff.IntervalElapsed())
assert.Equal(t, sorted[1], boff.calculateInterval())
boff.IncreaseInterval()
assert.False(t, boff.IntervalElapsed())
time.Sleep(time.Second)
assert.True(t, boff.IntervalElapsed())
assert.Equal(t, sorted[2], boff.calculateInterval())
boff.IncreaseInterval()
assert.False(t, boff.IntervalElapsed())
assert.False(t, boff.IntervalElapsed())
assert.Equal(t, sorted[len(sorted)-1], boff.calculateInterval())
})
}
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