mesh-sdk/go/catalogue/seat_dependencies_test.go

package catalogue

import (
	"testing"
)

// Defends novox/hq ADR 0207: a module depends on the node seats that apply its resources.

func TestTheSeatsThatApplyResourcesAreTheMeshsOwnAtNodeScope(t *testing.T) {
	for _, name := range []string{ServiceManagerSeat, PackageManagerSeat, ContainerRuntimeSeat} {
		s, ok := SeatNamed(name)
		if !ok {
			t.Fatalf("%s is not in the mesh's set", name)
		}
		if s.Scope != ScopeNode {
			t.Errorf("%s is held per %s, want per node", name, s.Scope)
		}
	}
	// No verbs yet for either new seat: ADR 0207 seeds the package manager without a protocol, and
	// the runtime's verbs wait for ADR 0166's acceptance.
	for _, name := range []string{PackageManagerSeat, ContainerRuntimeSeat} {
		if s, _ := SeatNamed(name); len(s.Serves)+len(s.Accepts)+len(s.Emits) > 0 {
			t.Errorf("%s carries a protocol; ADR 0207 seeds it with none", name)
		}
	}
}

// A module-declared seat's needs are judged exactly as a compiled seat's once were (novox/hq ADR
// 0220, ADR 0378 §8): "mail" declares the node seat "mail-notifier" needing node-notifier, the
// mesh's own (desktop notifications); "notifier" claims mail-notifier; "dunst" claims node-notifier,
// as it does in the real catalogue.
func mailNotifierAndDunst() map[string]Manifest {
	return shelf(
		Manifest{Module: "mail", DefinesSeats: []SeatDeclaration{{
			Name: "mail-notifier", Scope: ScopeNode, Needs: []string{NotifierSeat},
		}}},
		mod("notifier", nil, nil, nil, Claim{Name: "mail-notifier"}),
		mod("dunst", nil, nil, nil, Claim{Name: NotifierSeat}),
	)
}