63 lines
1.8 KiB
Go
63 lines
1.8 KiB
Go
package controller
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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)
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func TestRateLimiter_Backoff(t *testing.T) {
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t.Parallel()
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limiter := NewRateLimiter(1*time.Millisecond, 1*time.Second)
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request := Request{Kind: "one"}
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require.Equal(t, 1*time.Millisecond, limiter.NextRetry(request))
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require.Equal(t, 2*time.Millisecond, limiter.NextRetry(request))
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require.Equal(t, 4*time.Millisecond, limiter.NextRetry(request))
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require.Equal(t, 8*time.Millisecond, limiter.NextRetry(request))
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require.Equal(t, 16*time.Millisecond, limiter.NextRetry(request))
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requestTwo := Request{Kind: "two"}
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require.Equal(t, 1*time.Millisecond, limiter.NextRetry(requestTwo))
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require.Equal(t, 2*time.Millisecond, limiter.NextRetry(requestTwo))
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limiter.Forget(request)
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require.Equal(t, 1*time.Millisecond, limiter.NextRetry(request))
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}
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func TestRateLimiter_Overflow(t *testing.T) {
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t.Parallel()
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limiter := NewRateLimiter(1*time.Millisecond, 1000*time.Second)
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request := Request{Kind: "one"}
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for i := 0; i < 5; i++ {
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limiter.NextRetry(request)
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}
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// ensure we have a normally incrementing exponential backoff
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require.Equal(t, 32*time.Millisecond, limiter.NextRetry(request))
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overflow := Request{Kind: "overflow"}
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for i := 0; i < 1000; i++ {
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limiter.NextRetry(overflow)
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}
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// make sure we're capped at the passed in max backoff
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require.Equal(t, 1000*time.Second, limiter.NextRetry(overflow))
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limiter = NewRateLimiter(1*time.Minute, 1000*time.Hour)
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for i := 0; i < 2; i++ {
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limiter.NextRetry(request)
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}
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// ensure we have a normally incrementing exponential backoff
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require.Equal(t, 4*time.Minute, limiter.NextRetry(request))
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for i := 0; i < 1000; i++ {
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limiter.NextRetry(overflow)
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}
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// make sure we're capped at the passed in max backoff
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require.Equal(t, 1000*time.Hour, limiter.NextRetry(overflow))
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}
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