1 files changed, 76 insertions, 0 deletions
diff --git a/p2p/enode/localnode_test.go b/p2p/enode/localnode_test.go
new file mode 100644
index 000000000..f5e3496d6
--- /dev/null
+++ b/p2p/enode/localnode_test.go
@@ -0,0 +1,76 @@
+// 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 enode
+
+import (
+	"testing"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/p2p/enr"
+)
+
+func newLocalNodeForTesting() (*LocalNode, *DB) {
+	db, _ := OpenDB("")
+	key, _ := crypto.GenerateKey()
+	return NewLocalNode(db, key), db
+}
+
+func TestLocalNode(t *testing.T) {
+	ln, db := newLocalNodeForTesting()
+	defer db.Close()
+
+	if ln.Node().ID() != ln.ID() {
+		t.Fatal("inconsistent ID")
+	}
+
+	ln.Set(enr.WithEntry("x", uint(3)))
+	var x uint
+	if err := ln.Node().Load(enr.WithEntry("x", &x)); err != nil {
+		t.Fatal("can't load entry 'x':", err)
+	} else if x != 3 {
+		t.Fatal("wrong value for entry 'x':", x)
+	}
+}
+
+func TestLocalNodeSeqPersist(t *testing.T) {
+	ln, db := newLocalNodeForTesting()
+	defer db.Close()
+
+	if s := ln.Node().Seq(); s != 1 {
+		t.Fatalf("wrong initial seq %d, want 1", s)
+	}
+	ln.Set(enr.WithEntry("x", uint(1)))
+	if s := ln.Node().Seq(); s != 2 {
+		t.Fatalf("wrong seq %d after set, want 2", s)
+	}
+
+	// Create a new instance, it should reload the sequence number.
+	// The number increases just after that because a new record is
+	// created without the "x" entry.
+	ln2 := NewLocalNode(db, ln.key)
+	if s := ln2.Node().Seq(); s != 3 {
+		t.Fatalf("wrong seq %d on new instance, want 3", s)
+	}
+
+	// Create a new instance with a different node key on the same database.
+	// This should reset the sequence number.
+	key, _ := crypto.GenerateKey()
+	ln3 := NewLocalNode(db, key)
+	if s := ln3.Node().Seq(); s != 1 {
+		t.Fatalf("wrong seq %d on instance with changed key, want 1", s)
+	}
+}