1 files changed, 36 insertions, 0 deletions
diff --git a/p2p/enr/idscheme_test.go b/p2p/enr/idscheme_test.go
new file mode 100644
index 000000000..d790e12f1
--- /dev/null
+++ b/p2p/enr/idscheme_test.go
@@ -0,0 +1,36 @@
+// Copyright 2018 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package enr
+
+import (
+	"crypto/ecdsa"
+	"math/big"
+	"testing"
+)
+
+// Checks that failure to sign leaves the record unmodified.
+func TestSignError(t *testing.T) {
+	invalidKey := &ecdsa.PrivateKey{D: new(big.Int), PublicKey: *pubkey}
+
+	var r Record
+	if err := SignV4(&r, invalidKey); err == nil {
+		t.Fatal("expected error from SignV4")
+	}
+	if len(r.pairs) > 0 {
+		t.Fatal("expected empty record, have", r.pairs)
+	}
+}