mesh-controller/cmd/mesh-controller/holders_silent_test.go

package main

import (
	"testing"
	"time"

	"github.com/novox/mesh-controller/internal/catalogue"
)

// The live case of 2026-10-07 (novox/hq issue 299), replayed: the node-uplink seat gained its first
// verbs, `resolvers` and `links`, both optional while its holders catch up, and the holders serve
// neither. The working set is read from the store, whose rows carry no optional mark, so the seat comes
// back through UseSeats as it does live. Its holder on every machine answers nothing for it on the bus,
// and must not be judged silent: a seat whose verbs are all optional asks no holder to answer.
func TestAHolderOfASeatWhoseVerbsAreAllOptionalIsNotSilent(t *testing.T) {
	defer catalogue.UseSeats(catalogue.DefaultSeats())
	var rows []catalogue.Seat
	for _, s := range catalogue.DefaultSeats() {
		stored := s
		stored.Serves = nil
		for _, v := range s.Serves {
			v.Optional = false // the store never keeps the mark
			stored.Serves = append(stored.Serves, v)
		}
		rows = append(rows, stored)
	}
	catalogue.UseSeats(rows)

	uplink, ok := catalogue.SeatNamed("node-uplink")
	if !ok || len(uplink.Serves) == 0 {
		t.Fatalf("node-uplink must serve verbs for this replay: %+v", uplink)
	}
	for _, v := range uplink.Serves {
		if !v.Optional {
			t.Fatalf("node-uplink's %s is required; this replay is of a seat whose verbs are all optional", v.Name)
		}
	}

	nodes := []string{"anchor", "home-server", "workstation", "laptop"}
	heard := map[string]bool{}
	var recorded []catalogue.Held
	for _, n := range nodes {
		heard[n] = true
		recorded = append(recorded, catalogue.Held{Claim: "node-uplink", Scope: catalogue.ScopeNode, Node: n,
			Module: "networkmanager"})
	}
	expected := holdersToHear(catalogue.SeatsWithAProtocol(), recorded, nil, heard, nil, time.Now())
	if _, asked := expected["node-uplink"]; asked {
		t.Fatalf("node-uplink's holders are expected to answer though every verb of the seat is optional: %v",
			expected["node-uplink"])
	}
	// Nothing answers for the seat, as live: no silence is said about it.
	for _, o := range silentHolders(expected, map[string]map[string]bool{}) {
		if o.ID == "node-uplink."+o.Machine {
			t.Errorf("a holder serving none of a seat's optional verbs was judged silent: %s", o.Summary)
		}
	}
}

// Silence is still judged on a required verb: a seat with one required and one optional verb, held on a
// machine that is heard from, whose holder answers nothing — silent.
func TestAHolderServingNoRequiredVerbIsStillSilent(t *testing.T) {
	seat := catalogue.Seat{Name: "example-seat", Scope: catalogue.ScopeNode, Serves: []catalogue.Verb{
		{Name: "state"}, {Name: "later", Optional: true}}}
	recorded := []catalogue.Held{{Claim: "example-seat", Scope: catalogue.ScopeNode, Node: "laptop", Module: "m"}}
	expected := holdersToHear([]catalogue.Seat{seat}, recorded, nil, map[string]bool{"laptop": true}, nil, time.Now())
	if !expected["example-seat"]["laptop"] {
		t.Fatalf("a holder of a seat with a required verb is not expected to answer: %v", expected)
	}
	out := silentHolders(expected, map[string]map[string]bool{})
	if len(out) != 1 || out[0].ID != "example-seat.laptop" || out[0].Token != "silent" {
		t.Fatalf("a holder serving no required verb is not said to be silent: %+v", out)
	}
	if got := silentHolders(expected, map[string]map[string]bool{"example-seat": {"laptop": true}}); len(got) != 0 {
		t.Fatalf("a holder that answers is said to be silent: %+v", got)
	}
}

func TestHoldingNeedsAnAnswer(t *testing.T) {
	for _, c := range []struct {
		name   string
		serves []catalogue.Verb
		want   bool
	}{
		{"no verb", nil, false},
		{"only optional verbs", []catalogue.Verb{{Name: "a", Optional: true}, {Name: "b", Optional: true}}, false},
		{"a required verb among optional ones", []catalogue.Verb{{Name: "a", Optional: true}, {Name: "b"}}, true},
		{"only required verbs", []catalogue.Verb{{Name: "a"}}, true},
	} {
		if got := holdingNeedsAnAnswer(catalogue.Seat{Name: "s", Serves: c.serves}); got != c.want {
			t.Errorf("%s: holdingNeedsAnAnswer = %v, want %v", c.name, got, c.want)
		}
	}
}