121 lines
4.4 KiB
Go
121 lines
4.4 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package node
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import (
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"bytes"
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"github.com/ethereum/go-ethereum/crypto"
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)
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// Tests that datadirs can be successfully created, be them manually configured
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// ones or automatically generated temporary ones.
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func TestDatadirCreation(t *testing.T) {
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// Create a temporary data dir and check that it can be used by a node
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dir, err := ioutil.TempDir("", "")
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if err != nil {
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t.Fatalf("failed to create manual data dir: %v", err)
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}
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defer os.RemoveAll(dir)
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if _, err := New(&Config{DataDir: dir}); err != nil {
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t.Fatalf("failed to create stack with existing datadir: %v", err)
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}
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// Generate a long non-existing datadir path and check that it gets created by a node
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dir = filepath.Join(dir, "a", "b", "c", "d", "e", "f")
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if _, err := New(&Config{DataDir: dir}); err != nil {
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t.Fatalf("failed to create stack with creatable datadir: %v", err)
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}
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if _, err := os.Stat(dir); err != nil {
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t.Fatalf("freshly created datadir not accessible: %v", err)
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}
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// Verify that an impossible datadir fails creation
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file, err := ioutil.TempFile("", "")
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if err != nil {
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t.Fatalf("failed to create temporary file: %v", err)
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}
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defer os.Remove(file.Name())
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dir = filepath.Join(file.Name(), "invalid/path")
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if _, err := New(&Config{DataDir: dir}); err == nil {
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t.Fatalf("protocol stack created with an invalid datadir")
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}
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}
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// Tests that node keys can be correctly created, persisted, loaded and/or made
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// ephemeral.
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func TestNodeKeyPersistency(t *testing.T) {
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// Create a temporary folder and make sure no key is present
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dir, err := ioutil.TempDir("", "")
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if err != nil {
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t.Fatalf("failed to create temporary data directory: %v", err)
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}
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defer os.RemoveAll(dir)
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if _, err := os.Stat(filepath.Join(dir, datadirPrivateKey)); err == nil {
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t.Fatalf("non-created node key already exists")
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}
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// Configure a node with a preset key and ensure it's not persisted
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key, err := crypto.GenerateKey()
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if err != nil {
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t.Fatalf("failed to generate one-shot node key: %v", err)
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}
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if _, err := New(&Config{DataDir: dir, PrivateKey: key}); err != nil {
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t.Fatalf("failed to create empty stack: %v", err)
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}
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if _, err := os.Stat(filepath.Join(dir, datadirPrivateKey)); err == nil {
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t.Fatalf("one-shot node key persisted to data directory")
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}
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// Configure a node with no preset key and ensure it is persisted this time
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if _, err := New(&Config{DataDir: dir}); err != nil {
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t.Fatalf("failed to create newly keyed stack: %v", err)
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}
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if _, err := os.Stat(filepath.Join(dir, datadirPrivateKey)); err != nil {
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t.Fatalf("node key not persisted to data directory: %v", err)
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}
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key, err = crypto.LoadECDSA(filepath.Join(dir, datadirPrivateKey))
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if err != nil {
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t.Fatalf("failed to load freshly persisted node key: %v", err)
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}
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blob1, err := ioutil.ReadFile(filepath.Join(dir, datadirPrivateKey))
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if err != nil {
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t.Fatalf("failed to read freshly persisted node key: %v", err)
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}
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// Configure a new node and ensure the previously persisted key is loaded
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if _, err := New(&Config{DataDir: dir}); err != nil {
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t.Fatalf("failed to create previously keyed stack: %v", err)
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}
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blob2, err := ioutil.ReadFile(filepath.Join(dir, datadirPrivateKey))
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if err != nil {
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t.Fatalf("failed to read previously persisted node key: %v", err)
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}
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if bytes.Compare(blob1, blob2) != 0 {
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t.Fatalf("persisted node key mismatch: have %x, want %x", blob2, blob1)
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}
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// Configure ephemeral node and ensure no key is dumped locally
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if _, err := New(&Config{DataDir: ""}); err != nil {
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t.Fatalf("failed to create ephemeral stack: %v", err)
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}
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if _, err := os.Stat(filepath.Join(".", datadirPrivateKey)); err == nil {
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t.Fatalf("ephemeral node key persisted to disk")
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}
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}
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