Read the foundation's ports from each node's settings, wherever a port is used (hq ADR 0100)

internal/catalogue/adoption_test.go

@@ -221,3 +221,63 @@ func TestAGuardedPortMustBeAPort(t *testing.T) {
 func keys[V any](m map[string]V) []string {
 	return sortedKeys(m)
 }
+
+// novox/hq ADR 0100: the foundation's ports are the node's. Given 5433 for the store, every place
+// that uses the port reads it from there: the container, the filter, the openings, the guard.
+func TestAGivenPortIsUsedEverywhereThePortIs(t *testing.T) {
+	given := map[string]map[int]int{"postgres": {5432: 5433}, "lavinmq": {15672: 15673}}
+	for _, adopted := range []bool{true, false} {
+		with := anchorRendering(adopted)
+		with.Given = given
+		with.Ports["postgres"] = map[int]int{5432: 5433}
+		composed, err := anAdoptedAnchor().Compose(with)
+		if err != nil {
+			t.Fatal(err)
+		}
+		got := byID(composed.Resources)
+		if ports := got["postgres.server"]["ports"]; !reflect.DeepEqual(ports, []any{"5433:5432"}) {
+			t.Fatalf("the store's container publishes %v", ports)
+		}
+		if ports := got["lavinmq.server"]["ports"]; !reflect.DeepEqual(ports,
+			[]any{"5671:5671", "5672:5672", "127.0.0.1:15673:15672"}) {
+			t.Fatalf("the broker's container publishes %v", ports)
+		}
+		if !adopted {
+			filter, _ := got["nftables.filtering"]["content"].(string)
+			if !strings.Contains(filter, "tcp dport 5433 accept") || strings.Contains(filter, "5432") {
+				t.Fatalf("the filter does not use the given port:\n%s", filter)
+			}
+			continue
+		}
+		if o := got["adoption.opening-tcp-5433-forwarded"]; o == nil || o["to"] != 5432 {
+			t.Fatalf("no opening for the given port: %v", keys(got))
+		}
+		if guard := got[GuardID()]["content"]; guard != AsGuard([]int{5433, 15673}) {
+			t.Fatalf("the guard does not guard the given ports:\n%s", guard)
+		}
+	}
+}
+
+func TestAGivenPortIsTheNodesAndReachesSomething(t *testing.T) {
+	store := anAdoptedAnchor().Modules[1]
+	node := func(v any) []Layer {
+		return []Layer{{From: "anchor", Values: map[string]any{PortsSetting: v}}}
+	}
+	if got, err := GivenPorts(store, node(map[string]any{"5432": float64(5433)})); err != nil ||
+		got[5432] != 5433 {
+		t.Fatalf("a node's given port was not read: %v %v", got, err)
+	}
+	if _, err := GivenPorts(store, []Layer{{From: MeshWideLayer,
+		Values: map[string]any{PortsSetting: map[string]any{"5432": float64(5433)}}}}); err == nil {
+		t.Fatal("a port given for the whole mesh was accepted")
+	}
+	if _, err := GivenPorts(store, node(map[string]any{"6000": float64(6001)})); err == nil {
+		t.Fatal("a port the module neither listens on, publishes nor guards was given")
+	}
+	if _, err := GivenPorts(store, node(map[string]any{"5432": float64(70000)})); err == nil {
+		t.Fatal("a machine port that is not a port was given")
+	}
+	if stray := UnusedSettings(store, node(map[string]any{"5432": float64(5433)})); len(stray) != 0 {
+		t.Fatalf("a given port is called stray: %v", stray)
+	}
+}