add test & fix compile

models/repo/federated_repo_test.go

@@ -0,0 +1,29 @@
+// Copyright 2024 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repo
+
+import (
+	"testing"
+
+	"code.gitea.io/gitea/modules/validation"
+)
+
+func Test_FederatedRepoValidation(t *testing.T) {
+	sut := FederatedRepo{
+		RepoID:           12,
+		ExternalID:       "12",
+		FederationHostID: 1,
+	}
+	if res, err := validation.IsValid(sut); !res {
+		t.Errorf("sut should be valid but was %q", err)
+	}
+
+	sut = FederatedRepo{
+		ExternalID:       "12",
+		FederationHostID: 1,
+	}
+	if res, _ := validation.IsValid(sut); res {
+		t.Errorf("sut should be invalid")
+	}
+}