mesh-sdk/go/catalogue/seat_paths_test.go

package catalogue

import (
	"strings"
	"testing"
)

// Defends novox/hq ADR 0287 (issue 412): a seat names the paths its holder owns, a claim without them is
// refused, and only a claimant declares a seat's path.

// The starting set, exactly: node-hostname names /etc/hosts and /etc/hostname, node-uplink the resolver
// file stepping back for node-resolver, node-resolver the resolver file, and every other seat names none.
func TestTheSeatsThatNamePathsAreTheStartingSet(t *testing.T) {
	want := map[string]string{
		"node-hostname": "/etc/hosts /etc/hostname",
		"node-uplink":   "/etc/resolv.conf>node-resolver",
		ResolverSeat:    "/etc/resolv.conf",
	}
	for _, s := range DefaultSeats() {
		var got []string
		for _, p := range s.Paths {
			if p.StepsBackFor != "" {
				got = append(got, p.Path+">"+p.StepsBackFor)
			} else {
				got = append(got, p.Path)
			}
		}
		if strings.Join(got, " ") != want[s.Name] {
			t.Errorf("%s names %v; ADR 0287 gives it %q", s.Name, got, want[s.Name])
		}
	}
}

// What the store's rows carry is never the paths: a row read back keeps the compiled ones.
func TestTheSeatPathsSurviveTheStoresRows(t *testing.T) {
	before := seats
	t.Cleanup(func() { seats = before })
	UseSeats([]Seat{{Name: "node-hostname", Scope: ScopeNode}})
	s, _ := SeatNamed("node-hostname")
	if len(s.Paths) != 2 {
		t.Fatalf("node-hostname read back from its row names %v", s.Paths)
	}
}

func hostnameSeat(t *testing.T) Seat {
	t.Helper()
	s, ok := SeatNamed("node-hostname")
	if !ok {
		t.Fatal("no node-hostname seat")
	}
	return s
}

func hostnameHolder(resources ...map[string]any) Manifest {
	return Manifest{Module: "names", Version: "1", Claims: []Claim{{Name: "node-hostname", Scope: ScopeNode,
		Serves: []string{"entries", "add", "remove"}}}, Resources: resources}
}