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35 lines
1.1 KiB
35 lines
1.1 KiB
2 months ago
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package serial
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import (
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"testing"
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"time"
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)
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func TestCRConnectionStatusToleratesTransientMissWithoutInventingCableDown(t *testing.T) {
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now := time.Date(2026, 9, 14, 1, 0, 0, 0, time.UTC)
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probe := CRProbeState{Enabled: true, EverUp: true, LastResponseAt: &now}
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for _, state := range []string{CRProbeStateNoResponse, CRProbeStateBusy, CRProbeStateSuppressed, CRProbeStateError} {
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probe.State = state
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for _, age := range []time.Duration{0, 4 * time.Second, CRResponseGracePeriod} {
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if got := CRConnectionStatus(probe, now.Add(age)); got != "up" {
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t.Fatalf("transient %s at %s = %s", state, age, got)
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}
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}
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if got := CRConnectionStatus(probe, now.Add(CRResponseGracePeriod+time.Millisecond)); got != "unknown" {
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t.Fatalf("stale %s = %s; no response cannot prove cable down", state, got)
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}
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}
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probe.EverUp = false
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if CRConnectionStatus(probe, now) != "unknown" {
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t.Fatal("unconfirmed response promoted")
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}
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probe.Up = true
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if CRConnectionStatus(probe, now) != "up" {
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t.Fatal("confirmed reply ignored")
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}
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probe.Enabled = false
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if CRConnectionStatus(probe, now) != "unknown" {
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t.Fatal("disabled probe promoted")
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}
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}
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