Verify releases use original Git objects

delivery_test.go

@@ -402,6 +402,29 @@ func TestDeliverPageOnlySkipsBuildAndHostedAssets(t *testing.T) {
 	}
 }
 
+func TestDeliverUsesOriginalNoteWithBlobReplacement(t *testing.T) {
+	repository := newTaggedDeliveryConsumer(t)
+	original := buildGit(t, repository, "rev-parse", "HEAD:docs/releases/v1.2.3.md")
+	replacementPath := filepath.Join(t.TempDir(), "note.md")
+	if err := os.WriteFile(replacementPath, []byte("# Fixture v1.2.3\n\nReplacement note.\n"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	replacement := buildGit(t, repository, "hash-object", "-w", replacementPath)
+	buildGit(t, repository, "replace", original, replacement)
+	server, remote := newFacadeDeliveryServer(t, repository)
+	defer server.Close()
+	result, err := releasekit.Deliver(context.Background(), releasekit.DeliveryRequest{
+		RepositoryDir: repository, Product: "Fixture", Version: "v1.2.3",
+		Destination: facadeDeliveryDestination(server.URL),
+	})
+	if err != nil || result.State != releasekit.DeliveryComplete {
+		t.Fatalf("delivery = %#v, error = %v", result, err)
+	}
+	if got := remote.snapshot().createdBody; got != "# Fixture v1.2.3\n\nDelivery fixture.\n" {
+		t.Fatalf("delivered note = %q", got)
+	}
+}
+
 func TestDeliverUsesCommittedModuleIdentityForSeparatePages(t *testing.T) {
 	repository := newTwoModuleDeliveryConsumer(t)
 	server, remote := newFacadeDeliveryServer(t, repository)
@@ -817,6 +840,7 @@ type facadeDeliveryData struct {
 	tag           string
 	version       string
 	noteBody      string
+	createdBody   string
 	pages         map[string]bool
 	requests      int
 	writes        int
@@ -876,6 +900,7 @@ func (state *facadeDeliveryServer) serveHTTP(w http.ResponseWriter, r *http.Requ
 		if payload.Tag != data.tag || payload.Target != data.commit || payload.Name != "Fixture "+data.version {
 			data.t.Errorf("release payload = %#v", payload)
 		}
+		data.createdBody = payload.Body
 		data.pages[data.tag] = true
 		state.writeRelease(w)
 	case "/api/v1/repos/owner/example/releases/10/assets":