71 lines
3 KiB
Go
71 lines
3 KiB
Go
package rpc
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import (
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"context"
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"testing"
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"time"
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"github.com/iamxvbaba/td/clock"
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"go.uber.org/zap/zaptest"
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)
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// TestCheckCatchupRateLimit 锁定 Phase 2 difference 类 catch-up FLOOD_WAIT 行为：配置阈值后
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// 放行返回 nil、超限返回 FLOOD_WAIT 错误；阈值 <=0 或 Limiter 未装配时完全不限速（行为不变）。
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func TestCheckCatchupRateLimit(t *testing.T) {
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const userID = int64(7001)
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t.Run("disabled when limit unset", func(t *testing.T) {
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lim := &captureRateLimiter{}
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r := New(Config{}, Deps{Limiter: lim}, zaptest.NewLogger(t), clock.System)
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if err := r.checkCatchupRateLimit(context.Background(), userID, channelDifferenceRateLimitKeyPrefix); err != nil {
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t.Fatalf("disabled limit should allow: %v", err)
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}
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if len(lim.calls) != 0 {
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t.Fatalf("limiter should not be consulted when CatchupRateLimit<=0, calls=%v", lim.calls)
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}
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})
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t.Run("disabled when limiter nil", func(t *testing.T) {
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r := New(Config{CatchupRateLimit: 5}, Deps{}, zaptest.NewLogger(t), clock.System)
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if err := r.checkCatchupRateLimit(context.Background(), userID, peerDialogsRateLimitKeyPrefix); err != nil {
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t.Fatalf("nil limiter should allow: %v", err)
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}
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})
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t.Run("allowed under budget", func(t *testing.T) {
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lim := &captureRateLimiter{}
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r := New(Config{CatchupRateLimit: 5, CatchupRateWindow: time.Minute}, Deps{Limiter: lim}, zaptest.NewLogger(t), clock.System)
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if err := r.checkCatchupRateLimit(context.Background(), userID, channelDifferenceRateLimitKeyPrefix); err != nil {
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t.Fatalf("under budget should allow: %v", err)
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}
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if len(lim.calls) != 1 || lim.calls[0].limit != 5 || lim.calls[0].window != time.Minute || lim.calls[0].cost != 1 {
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t.Fatalf("limiter call = %+v, want limit5/window1m/cost1", lim.calls)
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}
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if lim.calls[0].key != channelDifferenceRateLimitKeyPrefix+"7001" {
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t.Fatalf("limiter key = %q, want difference-prefixed per user", lim.calls[0].key)
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}
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})
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t.Run("flood wait when over budget", func(t *testing.T) {
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lim := &captureRateLimiter{block: true, retryAfter: 7}
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r := New(Config{CatchupRateLimit: 5}, Deps{Limiter: lim}, zaptest.NewLogger(t), clock.System)
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err := r.checkCatchupRateLimit(context.Background(), userID, peerDialogsRateLimitKeyPrefix)
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if err == nil {
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t.Fatal("over budget should return FLOOD_WAIT error")
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}
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// 默认 window 在未配置时回落 defaultCatchupRateWindow。
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if lim.calls[0].window != defaultCatchupRateWindow {
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t.Fatalf("window = %v, want default %v when unset", lim.calls[0].window, defaultCatchupRateWindow)
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}
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})
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t.Run("separate budgets per kind", func(t *testing.T) {
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lim := &captureRateLimiter{}
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r := New(Config{CatchupRateLimit: 5}, Deps{Limiter: lim}, zaptest.NewLogger(t), clock.System)
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_ = r.checkCatchupRateLimit(context.Background(), userID, channelDifferenceRateLimitKeyPrefix)
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_ = r.checkCatchupRateLimit(context.Background(), userID, peerDialogsRateLimitKeyPrefix)
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if len(lim.calls) != 2 || lim.calls[0].key == lim.calls[1].key {
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t.Fatalf("difference and peerDialogs must use distinct keys: %+v", lim.calls)
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}
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})
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}
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