Guard that the bus storage stays declared as data with a backup (issue 1098)

modules/nats/cmd/nats-tools/backup_declared_test.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"encoding/json"
+	"os"
+	"strings"
+	"testing"
+)
+
+// The bus's storage stays declared as data protected by a backup (novox/hq ADR 0408 clause 7; issue 1098): the
+// assignments, rollouts and builds now live in the bus's buckets, so a manifest that stopped saying so would leave
+// the one copy of them unprotected. The storage directory is declared as valuable data with a dump into the
+// snapshots directory, which is itself declared.
+func TestTheBusStorageIsDeclaredAsDataProtectedByABackup(t *testing.T) {
+	raw, err := os.ReadFile("../../module.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var m struct {
+		Data struct {
+			Own []struct {
+				ID     string `json:"id"`
+				Path   string `json:"path"`
+				Class  string `json:"class"`
+				Backup *struct {
+					Dump string `json:"dump"`
+					Into string `json:"into"`
+				} `json:"backup"`
+			} `json:"own"`
+		} `json:"data"`
+		Resources []struct {
+			ID   string `json:"id"`
+			Type string `json:"type"`
+		} `json:"resources"`
+	}
+	if err := json.Unmarshal(raw, &m); err != nil {
+		t.Fatal(err)
+	}
+	var storage, snapshots bool
+	for _, d := range m.Data.Own {
+		switch d.ID {
+		case "jetstream":
+			if d.Path != "${dir:jetstream-data}" || d.Class != "valuable" {
+				t.Errorf("the bus's storage is declared as %q, class %q", d.Path, d.Class)
+			}
+			if d.Backup == nil || strings.TrimSpace(d.Backup.Dump) == "" || d.Backup.Into != "snapshots" {
+				t.Errorf("the bus's storage has no dump into the snapshots: %+v", d.Backup)
+			}
+			storage = true
+		case "snapshots":
+			snapshots = true
+		}
+	}
+	if !storage || !snapshots {
+		t.Errorf("the bus's storage declared: %v, and its snapshots: %v", storage, snapshots)
+	}
+	var dirs []string
+	for _, r := range m.Resources {
+		if r.Type == "directory" {
+			dirs = append(dirs, r.ID)
+		}
+	}
+	for _, want := range []string{"jetstream-data", "snapshots"} {
+		found := false
+		for _, id := range dirs {
+			found = found || id == want
+		}
+		if !found {
+			t.Errorf("the directory %s is not a declared resource (directories: %v)", want, dirs)
+		}
+	}
+}