Accountant: Inventar, where, Checkmk, Abrechnung
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package server
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import (
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"testing"
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"time"
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)
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func TestRateLimiter(t *testing.T) {
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now := time.Date(2026, 10, 2, 12, 0, 0, 0, time.UTC)
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l := &rateLimiter{limit: 3, window: time.Minute, now: func() time.Time { return now }}
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for i := range 3 {
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if ok, _ := l.allow("1.2.3.4"); !ok {
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t.Fatalf("Versuch %d abgelehnt", i+1)
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}
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}
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ok, retry := l.allow("1.2.3.4")
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if ok || retry != time.Minute {
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t.Errorf("4. Versuch: ok=%v retry=%v, erwartet abgelehnt mit 1 min", ok, retry)
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}
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if ok, _ := l.allow("5.6.7.8"); !ok {
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t.Error("andere IP mitbetroffen")
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}
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now = now.Add(40 * time.Second)
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if _, retry := l.allow("1.2.3.4"); retry != 20*time.Second {
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t.Errorf("Retry-After nach 40 s: %v, erwartet 20 s", retry)
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}
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now = now.Add(20 * time.Second)
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if ok, _ := l.allow("1.2.3.4"); !ok {
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t.Error("nach Ablauf des Fensters weiter gesperrt")
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}
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}
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// Die Zählerliste darf bei vielen IPs nicht unbegrenzt wachsen.
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func TestRateLimiter_ForgetsOldEntries(t *testing.T) {
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now := time.Date(2026, 10, 2, 12, 0, 0, 0, time.UTC)
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l := &rateLimiter{limit: 1, window: time.Minute, now: func() time.Time { return now }}
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for i := range 1000 {
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l.allow(string(rune('a'+i%26)) + time.Duration(i).String())
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}
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now = now.Add(2 * time.Minute)
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l.allow("neu")
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if n := l.size(); n != 1 {
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t.Errorf("%d Einträge nach Ablauf, erwartet 1", n)
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}
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}
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func TestRateLimiter_Disabled(t *testing.T) {
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l := &rateLimiter{limit: -1, window: time.Minute}
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for range 100 {
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if ok, _ := l.allow("x"); !ok {
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t.Fatal("Limit -1 muss unbegrenzt sein")
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}
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}
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}
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