72 lines
2.4 KiB
Go
72 lines
2.4 KiB
Go
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package monitor
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import "testing"
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func TestTunnelTransitionAlertsOncePerOutage(t *testing.T) {
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const limit = 3
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failures := 0
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var events []tunnelEvent
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// 连续三轮不通：只在第 3 轮（刚好达到阈值）发一次
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for i := 0; i < 5; i++ {
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var event tunnelEvent
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failures, event = tunnelTransition(failures, false, limit)
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if event != tunnelEventNone {
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events = append(events, event)
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}
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}
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if len(events) != 1 || events[0] != tunnelEventDown {
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t.Fatalf("连续不通应只告警一次，实际 %v", events)
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}
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if failures != 5 {
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t.Fatalf("失败计数应继续累加，实际 %d", failures)
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}
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// 恢复：发一次恢复通知并清零
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failures, event := tunnelTransition(failures, true, limit)
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if event != tunnelEventRecovered || failures != 0 {
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t.Fatalf("恢复应通知一次并清零：event=%v failures=%d", event, failures)
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}
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// 恢复后再次不通：还能再报一次
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failures, event = tunnelTransition(failures, false, limit)
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if event != tunnelEventNone || failures != 1 {
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t.Fatalf("恢复后重新计数：event=%v failures=%d", event, failures)
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}
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failures, event = tunnelTransition(failures, false, limit)
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if event != tunnelEventNone {
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t.Fatalf("未达阈值不应告警：%v", event)
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}
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if _, event = tunnelTransition(failures, false, limit); event != tunnelEventDown {
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t.Fatalf("第二次中断达到阈值应再告警一次：%v", event)
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}
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}
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func TestTunnelTransitionBelowThresholdIsSilent(t *testing.T) {
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// 单次抖动（未达阈值）不打扰用户，也不算作恢复
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if failures, event := tunnelTransition(0, true, 3); failures != 0 || event != tunnelEventNone {
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t.Fatalf("健康状态不应产生事件：%d %v", failures, event)
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}
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if failures, event := tunnelTransition(1, true, 3); failures != 0 || event != tunnelEventNone {
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t.Fatalf("未达阈值的恢复不应通知：%d %v", failures, event)
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}
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}
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func TestPercent(t *testing.T) {
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if got := percent(0, 0); got != 0 {
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t.Fatalf("总数为 0 时应返回 0，实际 %v", got)
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}
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if got := percent(50, 200); got != 25 {
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t.Fatalf("期望 25，实际 %v", got)
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}
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}
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func TestDetailOrFallsBack(t *testing.T) {
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if got := detailOr(" "); got != "未返回具体原因" {
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t.Fatalf("空详情应给出兜底文案，实际 %q", got)
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}
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if got := detailOr("dashboard 超时"); got != "dashboard 超时" {
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t.Fatalf("非空详情应原样返回，实际 %q", got)
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}
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}
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