62 lines
1.3 KiB
Go
62 lines
1.3 KiB
Go
package ratelimit
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import (
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"testing"
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"time"
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)
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func TestWindow(t *testing.T) {
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const (
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maxEvents = 3
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timeLimit = 100 * time.Millisecond
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)
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w := NewWindow(maxEvents, timeLimit)
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if w.Len() != 0 {
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t.Fatal("q.Len() =", w.Len(), "expect 0")
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}
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if w.Cap() != maxEvents {
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t.Fatal("q.Cap() =", w.Cap(), "expect 3")
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}
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if !w.Newest().IsZero() {
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t.Fatal("expected newest to be zero time with empty window")
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}
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if !w.Oldest().IsZero() {
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t.Fatal("expected oldest to be zero time with empty window")
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}
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if w.Span() != 0 {
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t.Fatal("expected span to be zero time with empty window")
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}
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var err error
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for i := 0; i < maxEvents; i++ {
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err = w.Add()
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if err != nil {
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t.Fatalf("cannot add event %d", i)
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}
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}
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if w.Len() != maxEvents {
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t.Fatalf("q.Len() is %d, expected %d", w.Len(), maxEvents)
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}
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if err = w.Add(); err != ErrRateLimitExceeded {
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t.Fatalf("add event %d within time limit should have failed with err: %s", maxEvents+1, ErrRateLimitExceeded)
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}
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time.Sleep(timeLimit)
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if err = w.Add(); err != nil {
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t.Fatalf("cannot add event after time limit: %s", err)
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}
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prev := w.Newest()
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time.Sleep(timeLimit)
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err = w.Add()
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if err != nil {
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t.Fatalf("cannot add event")
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}
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if w.Newest().Before(prev) {
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t.Fatal("newest is before previous value")
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}
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if w.Oldest().Before(prev) {
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t.Fatal("oldest is before previous value")
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}
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}
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