fix panic in randomDuration when min equals max

ucwong · ucwong · commit 540a0e6f8599 · 2025-11-19T17:39:29.000+08:00
diff --git a/ctxc/dropper.go b/ctxc/dropper.go
@@ -145,6 +145,9 @@ func randomDuration(min, max time.Duration) time.Duration {
 	if min > max {
 		panic("min duration must be less than or equal to max duration")
 	}
+	if min == max {
+		return min
+	}
 	return time.Duration(mrand.Int63n(int64(max-min)) + int64(min))
 }
 

Original file line number	Diff line number	Diff line change
`@@ -145,6 +145,9 @@ func randomDuration(min, max time.Duration) time.Duration {`
`145`	`145`	`if min > max {`
`146`	`146`	`panic("min duration must be less than or equal to max duration")`
`147`	`147`	`}`
	`148`	`+ if min == max {`
	`149`	`+ return min`
	`150`	`+ }`
`148`	`151`	`return time.Duration(mrand.Int63n(int64(max-min)) + int64(min))`
`149`	`152`	`}`
`150`	`153`