Bootstrap copied BFF and local accounts with public Sendico contracts (#34)

backend/pkg/model/recipient_json_test.go

@@ -0,0 +1,62 @@
+package model
+
+import (
+	"encoding/json"
+	"testing"
+
+	"go.mongodb.org/mongo-driver/v2/bson"
+)
+
+// TestOwnerJSONFlattensRef locks in the on-wire shape documented on Owner:
+// owner.ref and owner.kind must both be top-level keys. Ref must stay
+// anonymously embedded — a NAMED field with a `json:",inline"` tag is a
+// BSON-only convention and is not flattened by encoding/json, which would
+// silently nest it under the Go field name instead (a real regression this
+// test caught: {"Ref":{"ref":"..."},"kind":"..."} instead of
+// {"ref":"...","kind":"..."}), breaking every JSON consumer of owner.ref.
+func TestOwnerJSONFlattensRef(t *testing.T) {
+	ownerRef := bson.NewObjectID()
+	owner := Owner{Kind: OwnerKindAccount}
+	owner.Ref.Ref = ownerRef
+
+	b, err := json.Marshal(owner)
+	if err != nil {
+		t.Fatalf("marshal owner: %v", err)
+	}
+
+	var decoded map[string]any
+	if err := json.Unmarshal(b, &decoded); err != nil {
+		t.Fatalf("unmarshal owner json: %v", err)
+	}
+	if got, want := decoded["ref"], ownerRef.Hex(); got != want {
+		t.Fatalf("top-level owner.ref = %v, want %q (got JSON: %s)", got, want, b)
+	}
+	if got, want := decoded["kind"], string(OwnerKindAccount); got != want {
+		t.Fatalf("top-level owner.kind = %v, want %q (got JSON: %s)", got, want, b)
+	}
+	if _, nested := decoded["Ref"]; nested {
+		t.Fatalf("owner.ref must not nest under the Go field name \"Ref\", got JSON: %s", b)
+	}
+}
+
+func TestRecipientJSONRoundTripsOwner(t *testing.T) {
+	r := &Recipient{}
+	r.SetOwnerKind(OwnerKindOrganization)
+	r.SetOwnerRef(bson.NewObjectID())
+
+	b, err := json.Marshal(r)
+	if err != nil {
+		t.Fatalf("marshal recipient: %v", err)
+	}
+
+	var roundTripped Recipient
+	if err := json.Unmarshal(b, &roundTripped); err != nil {
+		t.Fatalf("unmarshal recipient json: %v", err)
+	}
+	if roundTripped.GetOwnerKind() != r.GetOwnerKind() {
+		t.Fatalf("owner kind round-trip = %v, want %v", roundTripped.GetOwnerKind(), r.GetOwnerKind())
+	}
+	if roundTripped.GetOwnerRef() != r.GetOwnerRef() {
+		t.Fatalf("owner ref round-trip = %v, want %v", roundTripped.GetOwnerRef(), r.GetOwnerRef())
+	}
+}